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-rw-r--r--fs/ocfs2/alloc.c482
-rw-r--r--fs/ocfs2/alloc.h7
-rw-r--r--fs/ocfs2/aops.c309
-rw-r--r--fs/ocfs2/aops.h6
-rw-r--r--fs/ocfs2/dir.c1423
-rw-r--r--fs/ocfs2/dir.h48
-rw-r--r--fs/ocfs2/dlmglue.c2
-rw-r--r--fs/ocfs2/dlmglue.h4
-rw-r--r--fs/ocfs2/export.c8
-rw-r--r--fs/ocfs2/extent_map.c6
-rw-r--r--fs/ocfs2/file.c298
-rw-r--r--fs/ocfs2/file.h2
-rw-r--r--fs/ocfs2/inode.c7
-rw-r--r--fs/ocfs2/inode.h1
-rw-r--r--fs/ocfs2/journal.c120
-rw-r--r--fs/ocfs2/journal.h3
-rw-r--r--fs/ocfs2/namei.c552
-rw-r--r--fs/ocfs2/namei.h19
-rw-r--r--fs/ocfs2/ocfs2.h7
-rw-r--r--fs/ocfs2/ocfs2_fs.h64
-rw-r--r--fs/ocfs2/super.c62
-rw-r--r--fs/ocfs2/sysfile.c10
22 files changed, 2386 insertions, 1054 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 778a850b463..4ba7f0bdc24 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -354,7 +354,6 @@ struct ocfs2_insert_type {
enum ocfs2_append_type ins_appending;
enum ocfs2_contig_type ins_contig;
int ins_contig_index;
- int ins_free_records;
int ins_tree_depth;
};
@@ -362,7 +361,6 @@ struct ocfs2_merge_ctxt {
enum ocfs2_contig_type c_contig_type;
int c_has_empty_extent;
int c_split_covers_rec;
- int c_used_tail_recs;
};
/*
@@ -2808,36 +2806,28 @@ static int ocfs2_try_to_merge_extent(struct inode *inode,
struct ocfs2_merge_ctxt *ctxt)
{
- int ret = 0, delete_tail_recs = 0;
+ int ret = 0;
struct ocfs2_extent_list *el = path_leaf_el(left_path);
struct ocfs2_extent_rec *rec = &el->l_recs[split_index];
BUG_ON(ctxt->c_contig_type == CONTIG_NONE);
- if (ctxt->c_split_covers_rec) {
- delete_tail_recs++;
-
- if (ctxt->c_contig_type == CONTIG_LEFTRIGHT ||
- ctxt->c_has_empty_extent)
- delete_tail_recs++;
-
- if (ctxt->c_has_empty_extent) {
- /*
- * The merge code will need to create an empty
- * extent to take the place of the newly
- * emptied slot. Remove any pre-existing empty
- * extents - having more than one in a leaf is
- * illegal.
- */
- ret = ocfs2_rotate_tree_left(inode, handle, left_path,
- dealloc);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
- split_index--;
- rec = &el->l_recs[split_index];
+ if (ctxt->c_split_covers_rec && ctxt->c_has_empty_extent) {
+ /*
+ * The merge code will need to create an empty
+ * extent to take the place of the newly
+ * emptied slot. Remove any pre-existing empty
+ * extents - having more than one in a leaf is
+ * illegal.
+ */
+ ret = ocfs2_rotate_tree_left(inode, handle, left_path,
+ dealloc);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
}
+ split_index--;
+ rec = &el->l_recs[split_index];
}
if (ctxt->c_contig_type == CONTIG_LEFTRIGHT) {
@@ -3593,6 +3583,7 @@ static int ocfs2_figure_insert_type(struct inode *inode,
struct buffer_head *di_bh,
struct buffer_head **last_eb_bh,
struct ocfs2_extent_rec *insert_rec,
+ int *free_records,
struct ocfs2_insert_type *insert)
{
int ret;
@@ -3633,7 +3624,7 @@ static int ocfs2_figure_insert_type(struct inode *inode,
* XXX: This test is simplistic, we can search for empty
* extent records too.
*/
- insert->ins_free_records = le16_to_cpu(el->l_count) -
+ *free_records = le16_to_cpu(el->l_count) -
le16_to_cpu(el->l_next_free_rec);
if (!insert->ins_tree_depth) {
@@ -3730,10 +3721,13 @@ int ocfs2_insert_extent(struct ocfs2_super *osb,
struct ocfs2_alloc_context *meta_ac)
{
int status;
+ int uninitialized_var(free_records);
struct buffer_head *last_eb_bh = NULL;
struct ocfs2_insert_type insert = {0, };
struct ocfs2_extent_rec rec;
+ BUG_ON(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
+
mlog(0, "add %u clusters at position %u to inode %llu\n",
new_clusters, cpos, (unsigned long long)OCFS2_I(inode)->ip_blkno);
@@ -3752,7 +3746,7 @@ int ocfs2_insert_extent(struct ocfs2_super *osb,
rec.e_flags = flags;
status = ocfs2_figure_insert_type(inode, fe_bh, &last_eb_bh, &rec,
- &insert);
+ &free_records, &insert);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -3762,9 +3756,9 @@ int ocfs2_insert_extent(struct ocfs2_super *osb,
"Insert.contig_index: %d, Insert.free_records: %d, "
"Insert.tree_depth: %d\n",
insert.ins_appending, insert.ins_contig, insert.ins_contig_index,
- insert.ins_free_records, insert.ins_tree_depth);
+ free_records, insert.ins_tree_depth);
- if (insert.ins_contig == CONTIG_NONE && insert.ins_free_records == 0) {
+ if (insert.ins_contig == CONTIG_NONE && free_records == 0) {
status = ocfs2_grow_tree(inode, handle, fe_bh,
&insert.ins_tree_depth, &last_eb_bh,
meta_ac);
@@ -3847,26 +3841,17 @@ leftright:
if (le16_to_cpu(rightmost_el->l_next_free_rec) ==
le16_to_cpu(rightmost_el->l_count)) {
- int old_depth = depth;
-
ret = ocfs2_grow_tree(inode, handle, di_bh, &depth, last_eb_bh,
meta_ac);
if (ret) {
mlog_errno(ret);
goto out;
}
-
- if (old_depth != depth) {
- eb = (struct ocfs2_extent_block *)(*last_eb_bh)->b_data;
- rightmost_el = &eb->h_list;
- }
}
memset(&insert, 0, sizeof(struct ocfs2_insert_type));
insert.ins_appending = APPEND_NONE;
insert.ins_contig = CONTIG_NONE;
- insert.ins_free_records = le16_to_cpu(rightmost_el->l_count)
- - le16_to_cpu(rightmost_el->l_next_free_rec);
insert.ins_tree_depth = depth;
insert_range = le32_to_cpu(split_rec.e_cpos) +
@@ -4015,11 +4000,6 @@ static int __ocfs2_mark_extent_written(struct inode *inode,
} else
rightmost_el = path_root_el(path);
- ctxt.c_used_tail_recs = le16_to_cpu(rightmost_el->l_next_free_rec);
- if (ctxt.c_used_tail_recs > 0 &&
- ocfs2_is_empty_extent(&rightmost_el->l_recs[0]))
- ctxt.c_used_tail_recs--;
-
if (rec->e_cpos == split_rec->e_cpos &&
rec->e_leaf_clusters == split_rec->e_leaf_clusters)
ctxt.c_split_covers_rec = 1;
@@ -4028,10 +4008,9 @@ static int __ocfs2_mark_extent_written(struct inode *inode,
ctxt.c_has_empty_extent = ocfs2_is_empty_extent(&el->l_recs[0]);
- mlog(0, "index: %d, contig: %u, used_tail_recs: %u, "
- "has_empty: %u, split_covers: %u\n", split_index,
- ctxt.c_contig_type, ctxt.c_used_tail_recs,
- ctxt.c_has_empty_extent, ctxt.c_split_covers_rec);
+ mlog(0, "index: %d, contig: %u, has_empty: %u, split_covers: %u\n",
+ split_index, ctxt.c_contig_type, ctxt.c_has_empty_extent,
+ ctxt.c_split_covers_rec);
if (ctxt.c_contig_type == CONTIG_NONE) {
if (ctxt.c_split_covers_rec)
@@ -4180,27 +4159,18 @@ static int ocfs2_split_tree(struct inode *inode, struct buffer_head *di_bh,
if (le16_to_cpu(rightmost_el->l_next_free_rec) ==
le16_to_cpu(rightmost_el->l_count)) {
- int old_depth = depth;
-
ret = ocfs2_grow_tree(inode, handle, di_bh, &depth, &last_eb_bh,
meta_ac);
if (ret) {
mlog_errno(ret);
goto out;
}
-
- if (old_depth != depth) {
- eb = (struct ocfs2_extent_block *)last_eb_bh->b_data;
- rightmost_el = &eb->h_list;
- }
}
memset(&insert, 0, sizeof(struct ocfs2_insert_type));
insert.ins_appending = APPEND_NONE;
insert.ins_contig = CONTIG_NONE;
insert.ins_split = SPLIT_RIGHT;
- insert.ins_free_records = le16_to_cpu(rightmost_el->l_count)
- - le16_to_cpu(rightmost_el->l_next_free_rec);
insert.ins_tree_depth = depth;
ret = ocfs2_do_insert_extent(inode, handle, di_bh, &split_rec, &insert);
@@ -5665,12 +5635,50 @@ static int ocfs2_ordered_zero_func(handle_t *handle, struct buffer_head *bh)
return ocfs2_journal_dirty_data(handle, bh);
}
+static void ocfs2_map_and_dirty_page(struct inode *inode, handle_t *handle,
+ unsigned int from, unsigned int to,
+ struct page *page, int zero, u64 *phys)
+{
+ int ret, partial = 0;
+
+ ret = ocfs2_map_page_blocks(page, phys, inode, from, to, 0);
+ if (ret)
+ mlog_errno(ret);
+
+ if (zero)
+ zero_user_page(page, from, to - from, KM_USER0);
+
+ /*
+ * Need to set the buffers we zero'd into uptodate
+ * here if they aren't - ocfs2_map_page_blocks()
+ * might've skipped some
+ */
+ if (ocfs2_should_order_data(inode)) {
+ ret = walk_page_buffers(handle,
+ page_buffers(page),
+ from, to, &partial,
+ ocfs2_ordered_zero_func);
+ if (ret < 0)
+ mlog_errno(ret);
+ } else {
+ ret = walk_page_buffers(handle, page_buffers(page),
+ from, to, &partial,
+ ocfs2_writeback_zero_func);
+ if (ret < 0)
+ mlog_errno(ret);
+ }
+
+ if (!partial)
+ SetPageUptodate(page);
+
+ flush_dcache_page(page);
+}
+
static void ocfs2_zero_cluster_pages(struct inode *inode, loff_t start,
loff_t end, struct page **pages,
int numpages, u64 phys, handle_t *handle)
{
- int i, ret, partial = 0;
- void *kaddr;
+ int i;
struct page *page;
unsigned int from, to = PAGE_CACHE_SIZE;
struct super_block *sb = inode->i_sb;
@@ -5691,87 +5699,31 @@ static void ocfs2_zero_cluster_pages(struct inode *inode, loff_t start,
BUG_ON(from > PAGE_CACHE_SIZE);
BUG_ON(to > PAGE_CACHE_SIZE);
- ret = ocfs2_map_page_blocks(page, &phys, inode, from, to, 0);
- if (ret)
- mlog_errno(ret);
-
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + from, 0, to - from);
- kunmap_atomic(kaddr, KM_USER0);
-
- /*
- * Need to set the buffers we zero'd into uptodate
- * here if they aren't - ocfs2_map_page_blocks()
- * might've skipped some
- */
- if (ocfs2_should_order_data(inode)) {
- ret = walk_page_buffers(handle,
- page_buffers(page),
- from, to, &partial,
- ocfs2_ordered_zero_func);
- if (ret < 0)
- mlog_errno(ret);
- } else {
- ret = walk_page_buffers(handle, page_buffers(page),
- from, to, &partial,
- ocfs2_writeback_zero_func);
- if (ret < 0)
- mlog_errno(ret);
- }
-
- if (!partial)
- SetPageUptodate(page);
-
- flush_dcache_page(page);
+ ocfs2_map_and_dirty_page(inode, handle, from, to, page, 1,
+ &phys);
start = (page->index + 1) << PAGE_CACHE_SHIFT;
}
out:
- if (pages) {
- for (i = 0; i < numpages; i++) {
- page = pages[i];
- unlock_page(page);
- mark_page_accessed(page);
- page_cache_release(page);
- }
- }
+ if (pages)
+ ocfs2_unlock_and_free_pages(pages, numpages);
}
static int ocfs2_grab_eof_pages(struct inode *inode, loff_t start, loff_t end,
- struct page **pages, int *num, u64 *phys)
+ struct page **pages, int *num)
{
- int i, numpages = 0, ret = 0;
- unsigned int ext_flags;
+ int numpages, ret = 0;
struct super_block *sb = inode->i_sb;
struct address_space *mapping = inode->i_mapping;
unsigned long index;
loff_t last_page_bytes;
- BUG_ON(!ocfs2_sparse_alloc(OCFS2_SB(sb)));
BUG_ON(start > end);
- if (start == end)
- goto out;
-
BUG_ON(start >> OCFS2_SB(sb)->s_clustersize_bits !=
(end - 1) >> OCFS2_SB(sb)->s_clustersize_bits);
- ret = ocfs2_extent_map_get_blocks(inode, start >> sb->s_blocksize_bits,
- phys, NULL, &ext_flags);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
- /* Tail is a hole. */
- if (*phys == 0)
- goto out;
-
- /* Tail is marked as unwritten, we can count on write to zero
- * in that case. */
- if (ext_flags & OCFS2_EXT_UNWRITTEN)
- goto out;
-
+ numpages = 0;
last_page_bytes = PAGE_ALIGN(end);
index = start >> PAGE_CACHE_SHIFT;
do {
@@ -5788,14 +5740,8 @@ static int ocfs2_grab_eof_pages(struct inode *inode, loff_t start, loff_t end,
out:
if (ret != 0) {
- if (pages) {
- for (i = 0; i < numpages; i++) {
- if (pages[i]) {
- unlock_page(pages[i]);
- page_cache_release(pages[i]);
- }
- }
- }
+ if (pages)
+ ocfs2_unlock_and_free_pages(pages, numpages);
numpages = 0;
}
@@ -5816,18 +5762,20 @@ out:
int ocfs2_zero_range_for_truncate(struct inode *inode, handle_t *handle,
u64 range_start, u64 range_end)
{
- int ret, numpages;
+ int ret = 0, numpages;
struct page **pages = NULL;
u64 phys;
+ unsigned int ext_flags;
+ struct super_block *sb = inode->i_sb;
/*
* File systems which don't support sparse files zero on every
* extend.
*/
- if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)))
+ if (!ocfs2_sparse_alloc(OCFS2_SB(sb)))
return 0;
- pages = kcalloc(ocfs2_pages_per_cluster(inode->i_sb),
+ pages = kcalloc(ocfs2_pages_per_cluster(sb),
sizeof(struct page *), GFP_NOFS);
if (pages == NULL) {
ret = -ENOMEM;
@@ -5835,16 +5783,31 @@ int ocfs2_zero_range_for_truncate(struct inode *inode, handle_t *handle,
goto out;
}
- ret = ocfs2_grab_eof_pages(inode, range_start, range_end, pages,
- &numpages, &phys);
+ if (range_start == range_end)
+ goto out;
+
+ ret = ocfs2_extent_map_get_blocks(inode,
+ range_start >> sb->s_blocksize_bits,
+ &phys, NULL, &ext_flags);
if (ret) {
mlog_errno(ret);
goto out;
}
- if (numpages == 0)
+ /*
+ * Tail is a hole, or is marked unwritten. In either case, we
+ * can count on read and write to return/push zero's.
+ */
+ if (phys == 0 || ext_flags & OCFS2_EXT_UNWRITTEN)
goto out;
+ ret = ocfs2_grab_eof_pages(inode, range_start, range_end, pages,
+ &numpages);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
ocfs2_zero_cluster_pages(inode, range_start, range_end, pages,
numpages, phys, handle);
@@ -5865,6 +5828,178 @@ out:
return ret;
}
+static void ocfs2_zero_dinode_id2(struct inode *inode, struct ocfs2_dinode *di)
+{
+ unsigned int blocksize = 1 << inode->i_sb->s_blocksize_bits;
+
+ memset(&di->id2, 0, blocksize - offsetof(struct ocfs2_dinode, id2));
+}
+
+void ocfs2_dinode_new_extent_list(struct inode *inode,
+ struct ocfs2_dinode *di)
+{
+ ocfs2_zero_dinode_id2(inode, di);
+ di->id2.i_list.l_tree_depth = 0;
+ di->id2.i_list.l_next_free_rec = 0;
+ di->id2.i_list.l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(inode->i_sb));
+}
+
+void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di)
+{
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_inline_data *idata = &di->id2.i_data;
+
+ spin_lock(&oi->ip_lock);
+ oi->ip_dyn_features |= OCFS2_INLINE_DATA_FL;
+ di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
+ spin_unlock(&oi->ip_lock);
+
+ /*
+ * We clear the entire i_data structure here so that all
+ * fields can be properly initialized.
+ */
+ ocfs2_zero_dinode_id2(inode, di);
+
+ idata->id_count = cpu_to_le16(ocfs2_max_inline_data(inode->i_sb));
+}
+
+int ocfs2_convert_inline_data_to_extents(struct inode *inode,
+ struct buffer_head *di_bh)
+{
+ int ret, i, has_data, num_pages = 0;
+ handle_t *handle;
+ u64 uninitialized_var(block);
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_alloc_context *data_ac = NULL;
+ struct page **pages = NULL;
+ loff_t end = osb->s_clustersize;
+
+ has_data = i_size_read(inode) ? 1 : 0;
+
+ if (has_data) {
+ pages = kcalloc(ocfs2_pages_per_cluster(osb->sb),
+ sizeof(struct page *), GFP_NOFS);
+ if (pages == NULL) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_reserve_clusters(osb, 1, &data_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ handle = ocfs2_start_trans(osb, OCFS2_INLINE_TO_EXTENTS_CREDITS);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out_unlock;
+ }
+
+ ret = ocfs2_journal_access(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ if (has_data) {
+ u32 bit_off, num;
+ unsigned int page_end;
+ u64 phys;
+
+ ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off,
+ &num);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * Save two copies, one for insert, and one that can
+ * be changed by ocfs2_map_and_dirty_page() below.
+ */
+ block = phys = ocfs2_clusters_to_blocks(inode->i_sb, bit_off);
+
+ /*
+ * Non sparse file systems zero on extend, so no need
+ * to do that now.
+ */
+ if (!ocfs2_sparse_alloc(osb) &&
+ PAGE_CACHE_SIZE < osb->s_clustersize)
+ end = PAGE_CACHE_SIZE;
+
+ ret = ocfs2_grab_eof_pages(inode, 0, end, pages, &num_pages);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * This should populate the 1st page for us and mark
+ * it up to date.
+ */
+ ret = ocfs2_read_inline_data(inode, pages[0], di_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ page_end = PAGE_CACHE_SIZE;
+ if (PAGE_CACHE_SIZE > osb->s_clustersize)
+ page_end = osb->s_clustersize;
+
+ for (i = 0; i < num_pages; i++)
+ ocfs2_map_and_dirty_page(inode, handle, 0, page_end,
+ pages[i], i > 0, &phys);
+ }
+
+ spin_lock(&oi->ip_lock);
+ oi->ip_dyn_features &= ~OCFS2_INLINE_DATA_FL;
+ di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
+ spin_unlock(&oi->ip_lock);
+
+ ocfs2_dinode_new_extent_list(inode, di);
+
+ ocfs2_journal_dirty(handle, di_bh);
+
+ if (has_data) {
+ /*
+ * An error at this point should be extremely rare. If
+ * this proves to be false, we could always re-build
+ * the in-inode data from our pages.
+ */
+ ret = ocfs2_insert_extent(osb, handle, inode, di_bh,
+ 0, block, 1, 0, NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ inode->i_blocks = ocfs2_inode_sector_count(inode);
+ }
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out_unlock:
+ if (data_ac)
+ ocfs2_free_alloc_context(data_ac);
+
+out:
+ if (pages) {
+ ocfs2_unlock_and_free_pages(pages, num_pages);
+ kfree(pages);
+ }
+
+ return ret;
+}
+
/*
* It is expected, that by the time you call this function,
* inode->i_size and fe->i_size have been adjusted.
@@ -6090,6 +6225,81 @@ bail:
return status;
}
+/*
+ * 'start' is inclusive, 'end' is not.
+ */
+int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
+ unsigned int start, unsigned int end, int trunc)
+{
+ int ret;
+ unsigned int numbytes;
+ handle_t *handle;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_inline_data *idata = &di->id2.i_data;
+
+ if (end > i_size_read(inode))
+ end = i_size_read(inode);
+
+ BUG_ON(start >= end);
+
+ if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) ||
+ !(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL) ||
+ !ocfs2_supports_inline_data(osb)) {
+ ocfs2_error(inode->i_sb,
+ "Inline data flags for inode %llu don't agree! "
+ "Disk: 0x%x, Memory: 0x%x, Superblock: 0x%x\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ le16_to_cpu(di->i_dyn_features),
+ OCFS2_I(inode)->ip_dyn_features,
+ osb->s_feature_incompat);
+ ret = -EROFS;
+ goto out;
+ }
+
+ handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_journal_access(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ numbytes = end - start;
+ memset(idata->id_data + start, 0, numbytes);
+
+ /*
+ * No need to worry about the data page here - it's been
+ * truncated already and inline data doesn't need it for
+ * pushing zero's to disk, so we'll let readpage pick it up
+ * later.
+ */
+ if (trunc) {
+ i_size_write(inode, start);
+ di->i_size = cpu_to_le64(start);
+ }
+
+ inode->i_blocks = ocfs2_inode_sector_count(inode);
+ inode->i_ctime = inode->i_mtime = CURRENT_TIME;
+
+ di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec);
+ di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
+
+ ocfs2_journal_dirty(handle, di_bh);
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out:
+ return ret;
+}
+
static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc)
{
/*
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 990df48ae8d..42ff94bd801 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -62,6 +62,11 @@ static inline int ocfs2_extend_meta_needed(struct ocfs2_dinode *fe)
return le16_to_cpu(fe->id2.i_list.l_tree_depth) + 2;
}
+void ocfs2_dinode_new_extent_list(struct inode *inode, struct ocfs2_dinode *di);
+void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di);
+int ocfs2_convert_inline_data_to_extents(struct inode *inode,
+ struct buffer_head *di_bh);
+
int ocfs2_truncate_log_init(struct ocfs2_super *osb);
void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb);
void ocfs2_schedule_truncate_log_flush(struct ocfs2_super *osb,
@@ -115,6 +120,8 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
struct inode *inode,
struct buffer_head *fe_bh,
struct ocfs2_truncate_context *tc);
+int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
+ unsigned int start, unsigned int end, int trunc);
int ocfs2_find_leaf(struct inode *inode, struct ocfs2_extent_list *root_el,
u32 cpos, struct buffer_head **leaf_bh);
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index f37f25c931f..34d10452c56 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -206,9 +206,70 @@ bail:
return err;
}
+int ocfs2_read_inline_data(struct inode *inode, struct page *page,
+ struct buffer_head *di_bh)
+{
+ void *kaddr;
+ unsigned int size;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+
+ if (!(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL)) {
+ ocfs2_error(inode->i_sb, "Inode %llu lost inline data flag",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+ return -EROFS;
+ }
+
+ size = i_size_read(inode);
+
+ if (size > PAGE_CACHE_SIZE ||
+ size > ocfs2_max_inline_data(inode->i_sb)) {
+ ocfs2_error(inode->i_sb,
+ "Inode %llu has with inline data has bad size: %u",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno, size);
+ return -EROFS;
+ }
+
+ kaddr = kmap_atomic(page, KM_USER0);
+ if (size)
+ memcpy(kaddr, di->id2.i_data.id_data, size);
+ /* Clear the remaining part of the page */
+ memset(kaddr + size, 0, PAGE_CACHE_SIZE - size);
+ flush_dcache_page(page);
+ kunmap_atomic(kaddr, KM_USER0);
+
+ SetPageUptodate(page);
+
+ return 0;
+}
+
+static int ocfs2_readpage_inline(struct inode *inode, struct page *page)
+{
+ int ret;
+ struct buffer_head *di_bh = NULL;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ BUG_ON(!PageLocked(page));
+ BUG_ON(!OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
+
+ ret = ocfs2_read_block(osb, OCFS2_I(inode)->ip_blkno, &di_bh,
+ OCFS2_BH_CACHED, inode);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_read_inline_data(inode, page, di_bh);
+out:
+ unlock_page(page);
+
+ brelse(di_bh);
+ return ret;
+}
+
static int ocfs2_readpage(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
loff_t start = (loff_t)page->index << PAGE_CACHE_SHIFT;
int ret, unlock = 1;
@@ -222,7 +283,7 @@ static int ocfs2_readpage(struct file *file, struct page *page)
goto out;
}
- if (down_read_trylock(&OCFS2_I(inode)->ip_alloc_sem) == 0) {
+ if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
ret = AOP_TRUNCATED_PAGE;
goto out_meta_unlock;
}
@@ -252,7 +313,10 @@ static int ocfs2_readpage(struct file *file, struct page *page)
goto out_alloc;
}
- ret = block_read_full_page(page, ocfs2_get_block);
+ if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ ret = ocfs2_readpage_inline(inode, page);
+ else
+ ret = block_read_full_page(page, ocfs2_get_block);
unlock = 0;
ocfs2_data_unlock(inode, 0);
@@ -301,12 +365,8 @@ int ocfs2_prepare_write_nolock(struct inode *inode, struct page *page,
{
int ret;
- down_read(&OCFS2_I(inode)->ip_alloc_sem);
-
ret = block_prepare_write(page, from, to, ocfs2_get_block);
- up_read(&OCFS2_I(inode)->ip_alloc_sem);
-
return ret;
}
@@ -401,7 +461,9 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
down_read(&OCFS2_I(inode)->ip_alloc_sem);
}
- err = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL, NULL);
+ if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL))
+ err = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL,
+ NULL);
if (!INODE_JOURNAL(inode)) {
up_read(&OCFS2_I(inode)->ip_alloc_sem);
@@ -415,7 +477,6 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
goto bail;
}
-
bail:
status = err ? 0 : p_blkno;
@@ -570,6 +631,13 @@ static ssize_t ocfs2_direct_IO(int rw,
mlog_entry_void();
+ /*
+ * Fallback to buffered I/O if we see an inode without
+ * extents.
+ */
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return 0;
+
if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) {
/*
* We get PR data locks even for O_DIRECT. This
@@ -834,18 +902,22 @@ struct ocfs2_write_ctxt {
struct ocfs2_cached_dealloc_ctxt w_dealloc;
};
-static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)
+void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages)
{
int i;
- for(i = 0; i < wc->w_num_pages; i++) {
- if (wc->w_pages[i] == NULL)
- continue;
-
- unlock_page(wc->w_pages[i]);
- mark_page_accessed(wc->w_pages[i]);
- page_cache_release(wc->w_pages[i]);
+ for(i = 0; i < num_pages; i++) {
+ if (pages[i]) {
+ unlock_page(pages[i]);
+ mark_page_accessed(pages[i]);
+ page_cache_release(pages[i]);
+ }
}
+}
+
+static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)
+{
+ ocfs2_unlock_and_free_pages(wc->w_pages, wc->w_num_pages);
brelse(wc->w_di_bh);
kfree(wc);
@@ -1360,6 +1432,160 @@ out:
return ret;
}
+static int ocfs2_write_begin_inline(struct address_space *mapping,
+ struct inode *inode,
+ struct ocfs2_write_ctxt *wc)
+{
+ int ret;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct page *page;
+ handle_t *handle;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;
+
+ page = find_or_create_page(mapping, 0, GFP_NOFS);
+ if (!page) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+ /*
+ * If we don't set w_num_pages then this page won't get unlocked
+ * and freed on cleanup of the write context.
+ */
+ wc->w_pages[0] = wc->w_target_page = page;
+ wc->w_num_pages = 1;
+
+ handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_journal_access(handle, inode, wc->w_di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ ocfs2_commit_trans(osb, handle);
+
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL))
+ ocfs2_set_inode_data_inline(inode, di);
+
+ if (!PageUptodate(page)) {
+ ret = ocfs2_read_inline_data(inode, page, wc->w_di_bh);
+ if (ret) {
+ ocfs2_commit_trans(osb, handle);
+
+ goto out;
+ }
+ }
+
+ wc->w_handle = handle;
+out:
+ return ret;
+}
+
+int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size)
+{
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+
+ if (new_size < le16_to_cpu(di->id2.i_data.id_count))
+ return 1;
+ return 0;
+}
+
+static int ocfs2_try_to_write_inline_data(struct address_space *mapping,
+ struct inode *inode, loff_t pos,
+ unsigned len, struct page *mmap_page,
+ struct ocfs2_write_ctxt *wc)
+{
+ int ret, written = 0;
+ loff_t end = pos + len;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+
+ mlog(0, "Inode %llu, write of %u bytes at off %llu. features: 0x%x\n",
+ (unsigned long long)oi->ip_blkno, len, (unsigned long long)pos,
+ oi->ip_dyn_features);
+
+ /*
+ * Handle inodes which already have inline data 1st.
+ */
+ if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ if (mmap_page == NULL &&
+ ocfs2_size_fits_inline_data(wc->w_di_bh, end))
+ goto do_inline_write;
+
+ /*
+ * The write won't fit - we have to give this inode an
+ * inline extent list now.
+ */
+ ret = ocfs2_convert_inline_data_to_extents(inode, wc->w_di_bh);
+ if (ret)
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * Check whether the inode can accept inline data.
+ */
+ if (oi->ip_clusters != 0 || i_size_read(inode) != 0)
+ return 0;
+
+ /*
+ * Check whether the write can fit.
+ */
+ if (mmap_page || end > ocfs2_max_inline_data(inode->i_sb))
+ return 0;
+
+do_inline_write:
+ ret = ocfs2_write_begin_inline(mapping, inode, wc);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * This signals to the caller that the data can be written
+ * inline.
+ */
+ written = 1;
+out:
+ return written ? written : ret;
+}
+
+/*
+ * This function only does anything for file systems which can't
+ * handle sparse files.
+ *
+ * What we want to do here is fill in any hole between the current end
+ * of allocation and the end of our write. That way the rest of the
+ * write path can treat it as an non-allocating write, which has no
+ * special case code for sparse/nonsparse files.
+ */
+static int ocfs2_expand_nonsparse_inode(struct inode *inode, loff_t pos,
+ unsigned len,
+ struct ocfs2_write_ctxt *wc)
+{
+ int ret;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ loff_t newsize = pos + len;
+
+ if (ocfs2_sparse_alloc(osb))
+ return 0;
+
+ if (newsize <= i_size_read(inode))
+ return 0;
+
+ ret = ocfs2_extend_no_holes(inode, newsize, newsize - len);
+ if (ret)
+ mlog_errno(ret);
+
+ return ret;
+}
+
int ocfs2_write_begin_nolock(struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata,
@@ -1381,6 +1607,25 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
return ret;
}
+ if (ocfs2_supports_inline_data(osb)) {
+ ret = ocfs2_try_to_write_inline_data(mapping, inode, pos, len,
+ mmap_page, wc);
+ if (ret == 1) {
+ ret = 0;
+ goto success;
+ }
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ ret = ocfs2_expand_nonsparse_inode(inode, pos, len, wc);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
ret = ocfs2_populate_write_desc(inode, wc, &clusters_to_alloc,
&extents_to_split);
if (ret) {
@@ -1462,6 +1707,7 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
if (meta_ac)
ocfs2_free_alloc_context(meta_ac);
+success:
*pagep = wc->w_target_page;
*fsdata = wc;
return 0;
@@ -1529,6 +1775,31 @@ out_fail:
return ret;
}
+static void ocfs2_write_end_inline(struct inode *inode, loff_t pos,
+ unsigned len, unsigned *copied,
+ struct ocfs2_dinode *di,
+ struct ocfs2_write_ctxt *wc)
+{
+ void *kaddr;
+
+ if (unlikely(*copied < len)) {
+ if (!PageUptodate(wc->w_target_page)) {
+ *copied = 0;
+ return;
+ }
+ }
+
+ kaddr = kmap_atomic(wc->w_target_page, KM_USER0);
+ memcpy(di->id2.i_data.id_data + pos, kaddr + pos, *copied);
+ kunmap_atomic(kaddr, KM_USER0);
+
+ mlog(0, "Data written to inode at offset %llu. "
+ "id_count = %u, copied = %u, i_dyn_features = 0x%x\n",
+ (unsigned long long)pos, *copied,
+ le16_to_cpu(di->id2.i_data.id_count),
+ le16_to_cpu(di->i_dyn_features));
+}
+
int ocfs2_write_end_nolock(struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
@@ -1542,6 +1813,11 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
handle_t *handle = wc->w_handle;
struct page *tmppage;
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ocfs2_write_end_inline(inode, pos, len, &copied, di, wc);
+ goto out_write_size;
+ }
+
if (unlikely(copied < len)) {
if (!PageUptodate(wc->w_target_page))
copied = 0;
@@ -1579,6 +1855,7 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
block_commit_write(tmppage, from, to);
}
+out_write_size:
pos += copied;
if (pos > inode->i_size) {
i_size_write(inode, pos);
diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h
index 389579bd64e..113560877db 100644
--- a/fs/ocfs2/aops.h
+++ b/fs/ocfs2/aops.h
@@ -34,6 +34,8 @@ int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
struct inode *inode, unsigned int from,
unsigned int to, int new);
+void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
+
int walk_page_buffers( handle_t *handle,
struct buffer_head *head,
unsigned from,
@@ -59,6 +61,10 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
struct page **pagep, void **fsdata,
struct buffer_head *di_bh, struct page *mmap_page);
+int ocfs2_read_inline_data(struct inode *inode, struct page *page,
+ struct buffer_head *di_bh);
+int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
+
/* all ocfs2_dio_end_io()'s fault */
#define ocfs2_iocb_is_rw_locked(iocb) \
test_bit(0, (unsigned long *)&iocb->private)
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 0d5fdde959c..7453b70c1a1 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -55,10 +55,16 @@
#include "journal.h"
#include "namei.h"
#include "suballoc.h"
+#include "super.h"
#include "uptodate.h"
#include "buffer_head_io.h"
+#define NAMEI_RA_CHUNKS 2
+#define NAMEI_RA_BLOCKS 4
+#define NAMEI_RA_SIZE (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
+#define NAMEI_RA_INDEX(c,b) (((c) * NAMEI_RA_BLOCKS) + (b))
+
static unsigned char ocfs2_filetype_table[] = {
DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, DT_FIFO, DT_SOCK, DT_LNK
};
@@ -66,12 +72,614 @@ static unsigned char ocfs2_filetype_table[] = {
static int ocfs2_extend_dir(struct ocfs2_super *osb,
struct inode *dir,
struct buffer_head *parent_fe_bh,
+ unsigned int blocks_wanted,
struct buffer_head **new_de_bh);
+static int ocfs2_do_extend_dir(struct super_block *sb,
+ handle_t *handle,
+ struct inode *dir,
+ struct buffer_head *parent_fe_bh,
+ struct ocfs2_alloc_context *data_ac,
+ struct ocfs2_alloc_context *meta_ac,
+ struct buffer_head **new_bh);
+
/*
- * ocfs2_readdir()
+ * bh passed here can be an inode block or a dir data block, depending
+ * on the inode inline data flag.
+ */
+static int ocfs2_check_dir_entry(struct inode * dir,
+ struct ocfs2_dir_entry * de,
+ struct buffer_head * bh,
+ unsigned long offset)
+{
+ const char *error_msg = NULL;
+ const int rlen = le16_to_cpu(de->rec_len);
+
+ if (rlen < OCFS2_DIR_REC_LEN(1))
+ error_msg = "rec_len is smaller than minimal";
+ else if (rlen % 4 != 0)
+ error_msg = "rec_len % 4 != 0";
+ else if (rlen < OCFS2_DIR_REC_LEN(de->name_len))
+ error_msg = "rec_len is too small for name_len";
+ else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
+ error_msg = "directory entry across blocks";
+
+ if (error_msg != NULL)
+ mlog(ML_ERROR, "bad entry in directory #%llu: %s - "
+ "offset=%lu, inode=%llu, rec_len=%d, name_len=%d\n",
+ (unsigned long long)OCFS2_I(dir)->ip_blkno, error_msg,
+ offset, (unsigned long long)le64_to_cpu(de->inode), rlen,
+ de->name_len);
+ return error_msg == NULL ? 1 : 0;
+}
+
+static inline int ocfs2_match(int len,
+ const char * const name,
+ struct ocfs2_dir_entry *de)
+{
+ if (len != de->name_len)
+ return 0;
+ if (!de->inode)
+ return 0;
+ return !memcmp(name, de->name, len);
+}
+
+/*
+ * Returns 0 if not found, -1 on failure, and 1 on success
+ */
+static int inline ocfs2_search_dirblock(struct buffer_head *bh,
+ struct inode *dir,
+ const char *name, int namelen,
+ unsigned long offset,
+ char *first_de,
+ unsigned int bytes,
+ struct ocfs2_dir_entry **res_dir)
+{
+ struct ocfs2_dir_entry *de;
+ char *dlimit, *de_buf;
+ int de_len;
+ int ret = 0;
+
+ mlog_entry_void();
+
+ de_buf = first_de;
+ dlimit = de_buf + bytes;
+
+ while (de_buf < dlimit) {
+ /* this code is executed quadratically often */
+ /* do minimal checking `by hand' */
+
+ de = (struct ocfs2_dir_entry *) de_buf;
+
+ if (de_buf + namelen <= dlimit &&
+ ocfs2_match(namelen, name, de)) {
+ /* found a match - just to be sure, do a full check */
+ if (!ocfs2_check_dir_entry(dir, de, bh, offset)) {
+ ret = -1;
+ goto bail;
+ }
+ *res_dir = de;
+ ret = 1;
+ goto bail;
+ }
+
+ /* prevent looping on a bad block */
+ de_len = le16_to_cpu(de->rec_len);
+ if (de_len <= 0) {
+ ret = -1;
+ goto bail;
+ }
+
+ de_buf += de_len;
+ offset += de_len;
+ }
+
+bail:
+ mlog_exit(ret);
+ return ret;
+}
+
+static struct buffer_head *ocfs2_find_entry_id(const char *name,
+ int namelen,
+ struct inode *dir,
+ struct ocfs2_dir_entry **res_dir)
+{
+ int ret, found;
+ struct buffer_head *di_bh = NULL;
+ struct ocfs2_dinode *di;
+ struct ocfs2_inline_data *data;
+
+ ret = ocfs2_read_block(OCFS2_SB(dir->i_sb), OCFS2_I(dir)->ip_blkno,
+ &di_bh, OCFS2_BH_CACHED, dir);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+ data = &di->id2.i_data;
+
+ found = ocfs2_search_dirblock(di_bh, dir, name, namelen, 0,
+ data->id_data, i_size_read(dir), res_dir);
+ if (found == 1)
+ return di_bh;
+
+ brelse(di_bh);
+out:
+ return NULL;
+}
+
+struct buffer_head *ocfs2_find_entry_el(const char *name, int namelen,
+ struct inode *dir,
+ struct ocfs2_dir_entry **res_dir)
+{
+ struct super_block *sb;
+ struct buffer_head *bh_use[NAMEI_RA_SIZE];
+ struct buffer_head *bh, *ret = NULL;
+ unsigned long start, block, b;
+ int ra_max = 0; /* Number of bh's in the readahead
+ buffer, bh_use[] */
+ int ra_ptr = 0; /* Current index into readahead
+ buffer */
+ int num = 0;
+ int nblocks, i, err;
+
+ mlog_entry_void();
+
+ sb = dir->i_sb;
+
+ nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
+ start = OCFS2_I(dir)->ip_dir_start_lookup;
+ if (start >= nblocks)
+ start = 0;
+ block = start;
+
+restart:
+ do {
+ /*
+ * We deal with the read-ahead logic here.
+ */
+ if (ra_ptr >= ra_max) {
+ /* Refill the readahead buffer */
+ ra_ptr = 0;
+ b = block;
+ for (ra_max = 0; ra_max < NAMEI_RA_SIZE; ra_max++) {
+ /*
+ * Terminate if we reach the end of the
+ * directory and must wrap, or if our
+ * search has finished at this block.
+ */
+ if (b >= nblocks || (num && block == start)) {
+ bh_use[ra_max] = NULL;
+ break;
+ }
+ num++;
+
+ bh = ocfs2_bread(dir, b++, &err, 1);
+ bh_use[ra_max] = bh;
+ }
+ }
+ if ((bh = bh_use[ra_ptr++]) == NULL)
+ goto next;
+ wait_on_buffer(bh);
+ if (!buffer_uptodate(bh)) {
+ /* read error, skip block & hope for the best */
+ ocfs2_error(dir->i_sb, "reading directory %llu, "
+ "offset %lu\n",
+ (unsigned long long)OCFS2_I(dir)->ip_blkno,
+ block);
+ brelse(bh);
+ goto next;
+ }
+ i = ocfs2_search_dirblock(bh, dir, name, namelen,
+ block << sb->s_blocksize_bits,
+ bh->b_data, sb->s_blocksize,
+ res_dir);
+ if (i == 1) {
+ OCFS2_I(dir)->ip_dir_start_lookup = block;
+ ret = bh;
+ goto cleanup_and_exit;
+ } else {
+ brelse(bh);
+ if (i < 0)
+ goto cleanup_and_exit;
+ }
+ next:
+ if (++block >= nblocks)
+ block = 0;
+ } while (block != start);
+
+ /*
+ * If the directory has grown while we were searching, then
+ * search the last part of the directory before giving up.
+ */
+ block = nblocks;
+ nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
+ if (block < nblocks) {
+ start = 0;
+ goto restart;
+ }
+
+cleanup_and_exit:
+ /* Clean up the read-ahead blocks */
+ for (; ra_ptr < ra_max; ra_ptr++)
+ brelse(bh_use[ra_ptr]);
+
+ mlog_exit_ptr(ret);
+ return ret;
+}
+
+/*
+ * Try to find an entry of the provided name within 'dir'.
*
+ * If nothing was found, NULL is returned. Otherwise, a buffer_head
+ * and pointer to the dir entry are passed back.
+ *
+ * Caller can NOT assume anything about the contents of the
+ * buffer_head - it is passed back only so that it can be passed into
+ * any one of the manipulation functions (add entry, delete entry,
+ * etc). As an example, bh in the extent directory case is a data
+ * block, in the inline-data case it actually points to an inode.
*/
-int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
+struct buffer_head *ocfs2_find_entry(const char *name, int namelen,
+ struct inode *dir,
+ struct ocfs2_dir_entry **res_dir)
+{
+ *res_dir = NULL;
+
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return ocfs2_find_entry_id(name, namelen, dir, res_dir);
+
+ return ocfs2_find_entry_el(name, namelen, dir, res_dir);
+}
+
+/*
+ * Update inode number and type of a previously found directory entry.
+ */
+int ocfs2_update_entry(struct inode *dir, handle_t *handle,
+ struct buffer_head *de_bh, struct ocfs2_dir_entry *de,
+ struct inode *new_entry_inode)
+{
+ int ret;
+
+ /*
+ * The same code works fine for both inline-data and extent
+ * based directories, so no need to split this up.
+ */
+
+ ret = ocfs2_journal_access(handle, dir, de_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ de->inode = cpu_to_le64(OCFS2_I(new_entry_inode)->ip_blkno);
+ ocfs2_set_de_type(de, new_entry_inode->i_mode);
+
+ ocfs2_journal_dirty(handle, de_bh);
+
+out:
+ return ret;
+}
+
+static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh, char *first_de,
+ unsigned int bytes)
+{
+ struct ocfs2_dir_entry *de, *pde;
+ int i, status = -ENOENT;
+
+ mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p)\n", handle, dir, de_del, bh);
+
+ i = 0;
+ pde = NULL;
+ de = (struct ocfs2_dir_entry *) first_de;
+ while (i < bytes) {
+ if (!ocfs2_check_dir_entry(dir, de, bh, i)) {
+ status = -EIO;
+ mlog_errno(status);
+ goto bail;
+ }
+ if (de == de_del) {
+ status = ocfs2_journal_access(handle, dir, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ status = -EIO;
+ mlog_errno(status);
+ goto bail;
+ }
+ if (pde)
+ pde->rec_len =
+ cpu_to_le16(le16_to_cpu(pde->rec_len) +
+ le16_to_cpu(de->rec_len));
+ else
+ de->inode = 0;
+ dir->i_version++;
+ status = ocfs2_journal_dirty(handle, bh);
+ goto bail;
+ }
+ i += le16_to_cpu(de->rec_len);
+ pde = de;
+ de = (struct ocfs2_dir_entry *)((char *)de + le16_to_cpu(de->rec_len));
+ }
+bail:
+ mlog_exit(status);
+ return status;
+}
+
+static inline int ocfs2_delete_entry_id(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh)
+{
+ int ret;
+ struct buffer_head *di_bh = NULL;
+ struct ocfs2_dinode *di;
+ struct ocfs2_inline_data *data;
+
+ ret = ocfs2_read_block(OCFS2_SB(dir->i_sb), OCFS2_I(dir)->ip_blkno,
+ &di_bh, OCFS2_BH_CACHED, dir);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+ data = &di->id2.i_data;
+
+ ret = __ocfs2_delete_entry(handle, dir, de_del, bh, data->id_data,
+ i_size_read(dir));
+
+ brelse(di_bh);
+out:
+ return ret;
+}
+
+static inline int ocfs2_delete_entry_el(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh)
+{
+ return __ocfs2_delete_entry(handle, dir, de_del, bh, bh->b_data,
+ bh->b_size);
+}
+
+/*
+ * ocfs2_delete_entry deletes a directory entry by merging it with the
+ * previous entry
+ */
+int ocfs2_delete_entry(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh)
+{
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return ocfs2_delete_entry_id(handle, dir, de_del, bh);
+
+ return ocfs2_delete_entry_el(handle, dir, de_del, bh);
+}
+
+/*
+ * Check whether 'de' has enough room to hold an entry of
+ * 'new_rec_len' bytes.
+ */
+static inline int ocfs2_dirent_would_fit(struct ocfs2_dir_entry *de,
+ unsigned int new_rec_len)
+{
+ unsigned int de_really_used;
+
+ /* Check whether this is an empty record with enough space */
+ if (le64_to_cpu(de->inode) == 0 &&
+ le16_to_cpu(de->rec_len) >= new_rec_len)
+ return 1;
+
+ /*
+ * Record might have free space at the end which we can
+ * use.
+ */
+ de_really_used = OCFS2_DIR_REC_LEN(de->name_len);
+ if (le16_to_cpu(de->rec_len) >= (de_really_used + new_rec_len))
+ return 1;
+
+ return 0;
+}
+
+/* we don't always have a dentry for what we want to add, so people
+ * like orphan dir can call this instead.
+ *
+ * If you pass me insert_bh, I'll skip the search of the other dir
+ * blocks and put the record in there.
+ */
+int __ocfs2_add_entry(handle_t *handle,
+ struct inode *dir,
+ const char *name, int namelen,
+ struct inode *inode, u64 blkno,
+ struct buffer_head *parent_fe_bh,
+ struct buffer_head *insert_bh)
+{
+ unsigned long offset;
+ unsigned short rec_len;
+ struct ocfs2_dir_entry *de, *de1;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)parent_fe_bh->b_data;
+ struct super_block *sb = dir->i_sb;
+ int retval, status;
+ unsigned int size = sb->s_blocksize;
+ char *data_start = insert_bh->b_data;
+
+ mlog_entry_void();
+
+ if (!namelen)
+ return -EINVAL;
+
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ data_start = di->id2.i_data.id_data;
+ size = i_size_read(dir);
+
+ BUG_ON(insert_bh != parent_fe_bh);
+ }
+
+ rec_len = OCFS2_DIR_REC_LEN(namelen);
+ offset = 0;
+ de = (struct ocfs2_dir_entry *) data_start;
+ while (1) {
+ BUG_ON((char *)de >= (size + data_start));
+
+ /* These checks should've already been passed by the
+ * prepare function, but I guess we can leave them
+ * here anyway. */
+ if (!ocfs2_check_dir_entry(dir, de, insert_bh, offset)) {
+ retval = -ENOENT;
+ goto bail;
+ }
+ if (ocfs2_match(namelen, name, de)) {
+ retval = -EEXIST;
+ goto bail;
+ }
+
+ if (ocfs2_dirent_would_fit(de, rec_len)) {
+ dir->i_mtime = dir->i_ctime = CURRENT_TIME;
+ retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
+ if (retval < 0) {
+ mlog_errno(retval);
+ goto bail;
+ }
+
+ status = ocfs2_journal_access(handle, dir, insert_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ /* By now the buffer is marked for journaling */
+ offset += le16_to_cpu(de->rec_len);
+ if (le64_to_cpu(de->inode)) {
+ de1 = (struct ocfs2_dir_entry *)((char *) de +
+ OCFS2_DIR_REC_LEN(de->name_len));
+ de1->rec_len =
+ cpu_to_le16(le16_to_cpu(de->rec_len) -
+ OCFS2_DIR_REC_LEN(de->name_len));
+ de->rec_len = cpu_to_le16(OCFS2_DIR_REC_LEN(de->name_len));
+ de = de1;
+ }
+ de->file_type = OCFS2_FT_UNKNOWN;
+ if (blkno) {
+ de->inode = cpu_to_le64(blkno);
+ ocfs2_set_de_type(de, inode->i_mode);
+ } else
+ de->inode = 0;
+ de->name_len = namelen;
+ memcpy(de->name, name, namelen);
+
+ dir->i_version++;
+ status = ocfs2_journal_dirty(handle, insert_bh);
+ retval = 0;
+ goto bail;
+ }
+ offset += le16_to_cpu(de->rec_len);
+ de = (struct ocfs2_dir_entry *) ((char *) de + le16_to_cpu(de->rec_len));
+ }
+
+ /* when you think about it, the assert above should prevent us
+ * from ever getting here. */
+ retval = -ENOSPC;
+bail:
+
+ mlog_exit(retval);
+ return retval;
+}
+
+static int ocfs2_dir_foreach_blk_id(struct inode *inode,
+ unsigned long *f_version,
+ loff_t *f_pos, void *priv,
+ filldir_t filldir, int *filldir_err)
+{
+ int ret, i, filldir_ret;
+ unsigned long offset = *f_pos;
+ struct buffer_head *di_bh = NULL;
+ struct ocfs2_dinode *di;
+ struct ocfs2_inline_data *data;
+ struct ocfs2_dir_entry *de;
+
+ ret = ocfs2_read_block(OCFS2_SB(inode->i_sb), OCFS2_I(inode)->ip_blkno,
+ &di_bh, OCFS2_BH_CACHED, inode);
+ if (ret) {
+ mlog(ML_ERROR, "Unable to read inode block for dir %llu\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+ goto out;
+ }
+
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+ data = &di->id2.i_data;
+
+ while (*f_pos < i_size_read(inode)) {
+revalidate:
+ /* If the dir block has changed since the last call to
+ * readdir(2), then we might be pointing to an invalid
+ * dirent right now. Scan from the start of the block
+ * to make sure. */
+ if (*f_version != inode->i_version) {
+ for (i = 0; i < i_size_read(inode) && i < offset; ) {
+ de = (struct ocfs2_dir_entry *)
+ (data->id_data + i);
+ /* It's too expensive to do a full
+ * dirent test each time round this
+ * loop, but we do have to test at
+ * least that it is non-zero. A
+ * failure will be detected in the
+ * dirent test below. */
+ if (le16_to_cpu(de->rec_len) <
+ OCFS2_DIR_REC_LEN(1))
+ break;
+ i += le16_to_cpu(de->rec_len);
+ }
+ *f_pos = offset = i;
+ *f_version = inode->i_version;
+ }
+
+ de = (struct ocfs2_dir_entry *) (data->id_data + *f_pos);
+ if (!ocfs2_check_dir_entry(inode, de, di_bh, *f_pos)) {
+ /* On error, skip the f_pos to the end. */
+ *f_pos = i_size_read(inode);
+ goto out;
+ }
+ offset += le16_to_cpu(de->rec_len);
+ if (le64_to_cpu(de->inode)) {
+ /* We might block in the next section
+ * if the data destination is
+ * currently swapped out. So, use a
+ * version stamp to detect whether or
+ * not the directory has been modified
+ * during the copy operation.
+ */
+ unsigned long version = *f_version;
+ unsigned char d_type = DT_UNKNOWN;
+
+ if (de->file_type < OCFS2_FT_MAX)
+ d_type = ocfs2_filetype_table[de->file_type];
+
+ filldir_ret = filldir(priv, de->name,
+ de->name_len,
+ *f_pos,
+ le64_to_cpu(de->inode),
+ d_type);
+ if (filldir_ret) {
+ if (filldir_err)
+ *filldir_err = filldir_ret;
+ break;
+ }
+ if (version != *f_version)
+ goto revalidate;
+ }
+ *f_pos += le16_to_cpu(de->rec_len);
+ }
+
+out:
+ brelse(di_bh);
+
+ return 0;
+}
+
+static int ocfs2_dir_foreach_blk_el(struct inode *inode,
+ unsigned long *f_version,
+ loff_t *f_pos, void *priv,
+ filldir_t filldir, int *filldir_err)
{
int error = 0;
unsigned long offset, blk, last_ra_blk = 0;
@@ -79,45 +687,23 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
struct buffer_head * bh, * tmp;
struct ocfs2_dir_entry * de;
int err;
- struct inode *inode = filp->f_path.dentry->d_inode;
struct super_block * sb = inode->i_sb;
unsigned int ra_sectors = 16;
- int lock_level = 0;
-
- mlog_entry("dirino=%llu\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
stored = 0;
bh = NULL;
- error = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level);
- if (lock_level && error >= 0) {
- /* We release EX lock which used to update atime
- * and get PR lock again to reduce contention
- * on commonly accessed directories. */
- ocfs2_meta_unlock(inode, 1);
- lock_level = 0;
- error = ocfs2_meta_lock(inode, NULL, 0);
- }
- if (error < 0) {
- if (error != -ENOENT)
- mlog_errno(error);
- /* we haven't got any yet, so propagate the error. */
- stored = error;
- goto bail_nolock;
- }
+ offset = (*f_pos) & (sb->s_blocksize - 1);
- offset = filp->f_pos & (sb->s_blocksize - 1);
-
- while (!error && !stored && filp->f_pos < i_size_read(inode)) {
- blk = (filp->f_pos) >> sb->s_blocksize_bits;
+ while (!error && !stored && *f_pos < i_size_read(inode)) {
+ blk = (*f_pos) >> sb->s_blocksize_bits;
bh = ocfs2_bread(inode, blk, &err, 0);
if (!bh) {
mlog(ML_ERROR,
"directory #%llu contains a hole at offset %lld\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
- filp->f_pos);
- filp->f_pos += sb->s_blocksize - offset;
+ *f_pos);
+ *f_pos += sb->s_blocksize - offset;
continue;
}
@@ -143,7 +729,7 @@ revalidate:
* readdir(2), then we might be pointing to an invalid
* dirent right now. Scan from the start of the block
* to make sure. */
- if (filp->f_version != inode->i_version) {
+ if (*f_version != inode->i_version) {
for (i = 0; i < sb->s_blocksize && i < offset; ) {
de = (struct ocfs2_dir_entry *) (bh->b_data + i);
/* It's too expensive to do a full
@@ -158,21 +744,20 @@ revalidate:
i += le16_to_cpu(de->rec_len);
}
offset = i;
- filp->f_pos = (filp->f_pos & ~(sb->s_blocksize - 1))
+ *f_pos = ((*f_pos) & ~(sb->s_blocksize - 1))
| offset;
- filp->f_version = inode->i_version;
+ *f_version = inode->i_version;
}
- while (!error && filp->f_pos < i_size_read(inode)
+ while (!error && *f_pos < i_size_read(inode)
&& offset < sb->s_blocksize) {
de = (struct ocfs2_dir_entry *) (bh->b_data + offset);
if (!ocfs2_check_dir_entry(inode, de, bh, offset)) {
/* On error, skip the f_pos to the
next block. */
- filp->f_pos = (filp->f_pos |
- (sb->s_blocksize - 1)) + 1;
+ *f_pos = ((*f_pos) | (sb->s_blocksize - 1)) + 1;
brelse(bh);
- goto bail;
+ goto out;
}
offset += le16_to_cpu(de->rec_len);
if (le64_to_cpu(de->inode)) {
@@ -183,36 +768,109 @@ revalidate:
* not the directory has been modified
* during the copy operation.
*/
- unsigned long version = filp->f_version;
+ unsigned long version = *f_version;
unsigned char d_type = DT_UNKNOWN;
if (de->file_type < OCFS2_FT_MAX)
d_type = ocfs2_filetype_table[de->file_type];
- error = filldir(dirent, de->name,
+ error = filldir(priv, de->name,
de->name_len,
- filp->f_pos,
- ino_from_blkno(sb, le64_to_cpu(de->inode)),
+ *f_pos,
+ le64_to_cpu(de->inode),
d_type);
- if (error)
+ if (error) {
+ if (filldir_err)
+ *filldir_err = error;
break;
- if (version != filp->f_version)
+ }
+ if (version != *f_version)
goto revalidate;
stored ++;
}
- filp->f_pos += le16_to_cpu(de->rec_len);
+ *f_pos += le16_to_cpu(de->rec_len);
}
offset = 0;
brelse(bh);
}
stored = 0;
-bail:
+out:
+ return stored;
+}
+
+static int ocfs2_dir_foreach_blk(struct inode *inode, unsigned long *f_version,
+ loff_t *f_pos, void *priv, filldir_t filldir,
+ int *filldir_err)
+{
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return ocfs2_dir_foreach_blk_id(inode, f_version, f_pos, priv,
+ filldir, filldir_err);
+
+ return ocfs2_dir_foreach_blk_el(inode, f_version, f_pos, priv, filldir,
+ filldir_err);
+}
+
+/*
+ * This is intended to be called from inside other kernel functions,
+ * so we fake some arguments.
+ */
+int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv,
+ filldir_t filldir)
+{
+ int ret = 0, filldir_err = 0;
+ unsigned long version = inode->i_version;
+
+ while (*f_pos < i_size_read(inode)) {
+ ret = ocfs2_dir_foreach_blk(inode, &version, f_pos, priv,
+ filldir, &filldir_err);
+ if (ret || filldir_err)
+ break;
+ }
+
+ if (ret > 0)
+ ret = -EIO;
+
+ return 0;
+}
+
+/*
+ * ocfs2_readdir()
+ *
+ */
+int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
+{
+ int error = 0;
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ int lock_level = 0;
+
+ mlog_entry("dirino=%llu\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+
+ error = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level);
+ if (lock_level && error >= 0) {
+ /* We release EX lock which used to update atime
+ * and get PR lock again to reduce contention
+ * on commonly accessed directories. */
+ ocfs2_meta_unlock(inode, 1);
+ lock_level = 0;
+ error = ocfs2_meta_lock(inode, NULL, 0);
+ }
+ if (error < 0) {
+ if (error != -ENOENT)
+ mlog_errno(error);
+ /* we haven't got any yet, so propagate the error. */
+ goto bail_nolock;
+ }
+
+ error = ocfs2_dir_foreach_blk(inode, &filp->f_version, &filp->f_pos,
+ dirent, filldir, NULL);
+
ocfs2_meta_unlock(inode, lock_level);
bail_nolock:
- mlog_exit(stored);
+ mlog_exit(error);
- return stored;
+ return error;
}
/*
@@ -252,6 +910,23 @@ leave:
return status;
}
+/*
+ * Convenience function for callers which just want the block number
+ * mapped to a name and don't require the full dirent info, etc.
+ */
+int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
+ int namelen, u64 *blkno)
+{
+ int ret;
+ struct buffer_head *bh = NULL;
+ struct ocfs2_dir_entry *dirent = NULL;
+
+ ret = ocfs2_find_files_on_disk(name, namelen, blkno, dir, &bh, &dirent);
+ brelse(bh);
+
+ return ret;
+}
+
/* Check for a name within a directory.
*
* Return 0 if the name does not exist
@@ -284,77 +959,414 @@ bail:
return ret;
}
+struct ocfs2_empty_dir_priv {
+ unsigned seen_dot;
+ unsigned seen_dot_dot;
+ unsigned seen_other;
+};
+static int ocfs2_empty_dir_filldir(void *priv, const char *name, int name_len,
+ loff_t pos, u64 ino, unsigned type)
+{
+ struct ocfs2_empty_dir_priv *p = priv;
+
+ /*
+ * Check the positions of "." and ".." records to be sure
+ * they're in the correct place.
+ */
+ if (name_len == 1 && !strncmp(".", name, 1) && pos == 0) {
+ p->seen_dot = 1;
+ return 0;
+ }
+
+ if (name_len == 2 && !strncmp("..", name, 2) &&
+ pos == OCFS2_DIR_REC_LEN(1)) {
+ p->seen_dot_dot = 1;
+ return 0;
+ }
+
+ p->seen_other = 1;
+ return 1;
+}
/*
* routine to check that the specified directory is empty (for rmdir)
+ *
+ * Returns 1 if dir is empty, zero otherwise.
*/
int ocfs2_empty_dir(struct inode *inode)
{
- unsigned long offset;
- struct buffer_head * bh;
- struct ocfs2_dir_entry * de, * de1;
- struct super_block * sb;
- int err;
+ int ret;
+ loff_t start = 0;
+ struct ocfs2_empty_dir_priv priv;
+
+ memset(&priv, 0, sizeof(priv));
+
+ ret = ocfs2_dir_foreach(inode, &start, &priv, ocfs2_empty_dir_filldir);
+ if (ret)
+ mlog_errno(ret);
- sb = inode->i_sb;
- if ((i_size_read(inode) <
- (OCFS2_DIR_REC_LEN(1) + OCFS2_DIR_REC_LEN(2))) ||
- !(bh = ocfs2_bread(inode, 0, &err, 0))) {
- mlog(ML_ERROR, "bad directory (dir #%llu) - no data block\n",
+ if (!priv.seen_dot || !priv.seen_dot_dot) {
+ mlog(ML_ERROR, "bad directory (dir #%llu) - no `.' or `..'\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
+ /*
+ * XXX: Is it really safe to allow an unlink to continue?
+ */
return 1;
}
- de = (struct ocfs2_dir_entry *) bh->b_data;
- de1 = (struct ocfs2_dir_entry *)
- ((char *)de + le16_to_cpu(de->rec_len));
- if ((le64_to_cpu(de->inode) != OCFS2_I(inode)->ip_blkno) ||
- !le64_to_cpu(de1->inode) ||
- strcmp(".", de->name) ||
- strcmp("..", de1->name)) {
- mlog(ML_ERROR, "bad directory (dir #%llu) - no `.' or `..'\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
- brelse(bh);
- return 1;
+ return !priv.seen_other;
+}
+
+static void ocfs2_fill_initial_dirents(struct inode *inode,
+ struct inode *parent,
+ char *start, unsigned int size)
+{
+ struct ocfs2_dir_entry *de = (struct ocfs2_dir_entry *)start;
+
+ de->inode = cpu_to_le64(OCFS2_I(inode)->ip_blkno);
+ de->name_len = 1;
+ de->rec_len =
+ cpu_to_le16(OCFS2_DIR_REC_LEN(de->name_len));
+ strcpy(de->name, ".");
+ ocfs2_set_de_type(de, S_IFDIR);
+
+ de = (struct ocfs2_dir_entry *) ((char *)de + le16_to_cpu(de->rec_len));
+ de->inode = cpu_to_le64(OCFS2_I(parent)->ip_blkno);
+ de->rec_len = cpu_to_le16(size - OCFS2_DIR_REC_LEN(1));
+ de->name_len = 2;
+ strcpy(de->name, "..");
+ ocfs2_set_de_type(de, S_IFDIR);
+}
+
+/*
+ * This works together with code in ocfs2_mknod_locked() which sets
+ * the inline-data flag and initializes the inline-data section.
+ */
+static int ocfs2_fill_new_dir_id(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct inode *parent,
+ struct inode *inode,
+ struct buffer_head *di_bh)
+{
+ int ret;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_inline_data *data = &di->id2.i_data;
+ unsigned int size = le16_to_cpu(data->id_count);
+
+ ret = ocfs2_journal_access(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
}
- offset = le16_to_cpu(de->rec_len) + le16_to_cpu(de1->rec_len);
- de = (struct ocfs2_dir_entry *)((char *)de1 + le16_to_cpu(de1->rec_len));
- while (offset < i_size_read(inode) ) {
- if (!bh || (void *)de >= (void *)(bh->b_data + sb->s_blocksize)) {
- brelse(bh);
- bh = ocfs2_bread(inode,
- offset >> sb->s_blocksize_bits, &err, 0);
- if (!bh) {
- mlog(ML_ERROR, "dir %llu has a hole at %lu\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno, offset);
- offset += sb->s_blocksize;
- continue;
- }
- de = (struct ocfs2_dir_entry *) bh->b_data;
- }
- if (!ocfs2_check_dir_entry(inode, de, bh, offset)) {
- brelse(bh);
- return 1;
+
+ ocfs2_fill_initial_dirents(inode, parent, data->id_data, size);
+
+ ocfs2_journal_dirty(handle, di_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ i_size_write(inode, size);
+ inode->i_nlink = 2;
+ inode->i_blocks = ocfs2_inode_sector_count(inode);
+
+ ret = ocfs2_mark_inode_dirty(handle, inode, di_bh);
+ if (ret < 0)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
+static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct inode *parent,
+ struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct ocfs2_alloc_context *data_ac)
+{
+ int status;
+ struct buffer_head *new_bh = NULL;
+
+ mlog_entry_void();
+
+ status = ocfs2_do_extend_dir(osb->sb, handle, inode, fe_bh,
+ data_ac, NULL, &new_bh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+
+ ocfs2_set_new_buffer_uptodate(inode, new_bh);
+
+ status = ocfs2_journal_access(handle, inode, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+ memset(new_bh->b_data, 0, osb->sb->s_blocksize);
+
+ ocfs2_fill_initial_dirents(inode, parent, new_bh->b_data,
+ osb->sb->s_blocksize);
+
+ status = ocfs2_journal_dirty(handle, new_bh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+
+ i_size_write(inode, inode->i_sb->s_blocksize);
+ inode->i_nlink = 2;
+ inode->i_blocks = ocfs2_inode_sector_count(inode);
+ status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+
+ status = 0;
+bail:
+ if (new_bh)
+ brelse(new_bh);
+
+ mlog_exit(status);
+ return status;
+}
+
+int ocfs2_fill_new_dir(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct inode *parent,
+ struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct ocfs2_alloc_context *data_ac)
+{
+ BUG_ON(!ocfs2_supports_inline_data(osb) && data_ac == NULL);
+
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return ocfs2_fill_new_dir_id(osb, handle, parent, inode, fe_bh);
+
+ return ocfs2_fill_new_dir_el(osb, handle, parent, inode, fe_bh,
+ data_ac);
+}
+
+static void ocfs2_expand_last_dirent(char *start, unsigned int old_size,
+ unsigned int new_size)
+{
+ struct ocfs2_dir_entry *de;
+ struct ocfs2_dir_entry *prev_de;
+ char *de_buf, *limit;
+ unsigned int bytes = new_size - old_size;
+
+ limit = start + old_size;
+ de_buf = start;
+ de = (struct ocfs2_dir_entry *)de_buf;
+ do {
+ prev_de = de;
+ de_buf += le16_to_cpu(de->rec_len);
+ de = (struct ocfs2_dir_entry *)de_buf;
+ } while (de_buf < limit);
+
+ le16_add_cpu(&prev_de->rec_len, bytes);
+}
+
+/*
+ * We allocate enough clusters to fulfill "blocks_wanted", but set
+ * i_size to exactly one block. Ocfs2_extend_dir() will handle the
+ * rest automatically for us.
+ *
+ * *first_block_bh is a pointer to the 1st data block allocated to the
+ * directory.
+ */
+static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
+ unsigned int blocks_wanted,
+ struct buffer_head **first_block_bh)
+{
+ int ret, credits = OCFS2_INLINE_TO_EXTENTS_CREDITS;
+ u32 alloc, bit_off, len;
+ struct super_block *sb = dir->i_sb;
+ u64 blkno, bytes = blocks_wanted << sb->s_blocksize_bits;
+ struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ struct ocfs2_inode_info *oi = OCFS2_I(dir);
+ struct ocfs2_alloc_context *data_ac;
+ struct buffer_head *dirdata_bh = NULL;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ handle_t *handle;
+
+ alloc = ocfs2_clusters_for_bytes(sb, bytes);
+
+ /*
+ * We should never need more than 2 clusters for this -
+ * maximum dirent size is far less than one block. In fact,
+ * the only time we'd need more than one cluster is if
+ * blocksize == clustersize and the dirent won't fit in the
+ * extra space that the expansion to a single block gives. As
+ * of today, that only happens on 4k/4k file systems.
+ */
+ BUG_ON(alloc > 2);
+
+ ret = ocfs2_reserve_clusters(osb, alloc, &data_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ down_write(&oi->ip_alloc_sem);
+
+ /*
+ * Prepare for worst case allocation scenario of two seperate
+ * extents.
+ */
+ if (alloc == 2)
+ credits += OCFS2_SUBALLOC_ALLOC;
+
+ handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out_sem;
+ }
+
+ /*
+ * Try to claim as many clusters as the bitmap can give though
+ * if we only get one now, that's enough to continue. The rest
+ * will be claimed after the conversion to extents.
+ */
+ ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off, &len);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * Operations are carefully ordered so that we set up the new
+ * data block first. The conversion from inline data to
+ * extents follows.
+ */
+ blkno = ocfs2_clusters_to_blocks(dir->i_sb, bit_off);
+ dirdata_bh = sb_getblk(sb, blkno);
+ if (!dirdata_bh) {
+ ret = -EIO;
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ ocfs2_set_new_buffer_uptodate(dir, dirdata_bh);
+
+ ret = ocfs2_journal_access(handle, dir, dirdata_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ memcpy(dirdata_bh->b_data, di->id2.i_data.id_data, i_size_read(dir));
+ memset(dirdata_bh->b_data + i_size_read(dir), 0,
+ sb->s_blocksize - i_size_read(dir));
+ ocfs2_expand_last_dirent(dirdata_bh->b_data, i_size_read(dir),
+ sb->s_blocksize);
+
+ ret = ocfs2_journal_dirty(handle, dirdata_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * Set extent, i_size, etc on the directory. After this, the
+ * inode should contain the same exact dirents as before and
+ * be fully accessible from system calls.
+ *
+ * We let the later dirent insert modify c/mtime - to the user
+ * the data hasn't changed.
+ */
+ ret = ocfs2_journal_access(handle, dir, di_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ spin_lock(&oi->ip_lock);
+ oi->ip_dyn_features &= ~OCFS2_INLINE_DATA_FL;
+ di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
+ spin_unlock(&oi->ip_lock);
+
+ ocfs2_dinode_new_extent_list(dir, di);
+
+ i_size_write(dir, sb->s_blocksize);
+ dir->i_mtime = dir->i_ctime = CURRENT_TIME;
+
+ di->i_size = cpu_to_le64(sb->s_blocksize);
+ di->i_ctime = di->i_mtime = cpu_to_le64(dir->i_ctime.tv_sec);
+ di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(dir->i_ctime.tv_nsec);
+ dir->i_blocks = ocfs2_inode_sector_count(dir);
+
+ /*
+ * This should never fail as our extent list is empty and all
+ * related blocks have been journaled already.
+ */
+ ret = ocfs2_insert_extent(osb, handle, dir, di_bh, 0, blkno, len, 0,
+ NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_journal_dirty(handle, di_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * We asked for two clusters, but only got one in the 1st
+ * pass. Claim the 2nd cluster as a separate extent.
+ */
+ if (alloc > len) {
+ ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off,
+ &len);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
}
- if (le64_to_cpu(de->inode)) {
- brelse(bh);
- return 0;
+ blkno = ocfs2_clusters_to_blocks(dir->i_sb, bit_off);
+
+ ret = ocfs2_insert_extent(osb, handle, dir, di_bh, 1, blkno,
+ len, 0, NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
}
- offset += le16_to_cpu(de->rec_len);
- de = (struct ocfs2_dir_entry *)
- ((char *)de + le16_to_cpu(de->rec_len));
}
- brelse(bh);
- return 1;
+
+ *first_block_bh = dirdata_bh;
+ dirdata_bh = NULL;
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out_sem:
+ up_write(&oi->ip_alloc_sem);
+
+out:
+ if (data_ac)
+ ocfs2_free_alloc_context(data_ac);
+
+ brelse(dirdata_bh);
+
+ return ret;
}
/* returns a bh of the 1st new block in the allocation. */
-int ocfs2_do_extend_dir(struct super_block *sb,
- handle_t *handle,
- struct inode *dir,
- struct buffer_head *parent_fe_bh,
- struct ocfs2_alloc_context *data_ac,
- struct ocfs2_alloc_context *meta_ac,
- struct buffer_head **new_bh)
+static int ocfs2_do_extend_dir(struct super_block *sb,
+ handle_t *handle,
+ struct inode *dir,
+ struct buffer_head *parent_fe_bh,
+ struct ocfs2_alloc_context *data_ac,
+ struct ocfs2_alloc_context *meta_ac,
+ struct buffer_head **new_bh)
{
int status;
int extend;
@@ -396,10 +1408,18 @@ bail:
return status;
}
-/* assumes you already have a cluster lock on the directory. */
+/*
+ * Assumes you already have a cluster lock on the directory.
+ *
+ * 'blocks_wanted' is only used if we have an inline directory which
+ * is to be turned into an extent based one. The size of the dirent to
+ * insert might be larger than the space gained by growing to just one
+ * block, so we may have to grow the inode by two blocks in that case.
+ */
static int ocfs2_extend_dir(struct ocfs2_super *osb,
struct inode *dir,
struct buffer_head *parent_fe_bh,
+ unsigned int blocks_wanted,
struct buffer_head **new_de_bh)
{
int status = 0;
@@ -415,6 +1435,38 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
mlog_entry_void();
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ status = ocfs2_expand_inline_dir(dir, parent_fe_bh,
+ blocks_wanted, &new_bh);
+ if (status) {
+ mlog_errno(status);
+ goto bail;
+ }
+
+ if (blocks_wanted == 1) {
+ /*
+ * If the new dirent will fit inside the space
+ * created by pushing out to one block, then
+ * we can complete the operation
+ * here. Otherwise we have to expand i_size
+ * and format the 2nd block below.
+ */
+ BUG_ON(new_bh == NULL);
+ goto bail_bh;
+ }
+
+ /*
+ * Get rid of 'new_bh' - we want to format the 2nd
+ * data block and return that instead.
+ */
+ brelse(new_bh);
+ new_bh = NULL;
+
+ dir_i_size = i_size_read(dir);
+ credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS;
+ goto do_extend;
+ }
+
dir_i_size = i_size_read(dir);
mlog(0, "extending dir %llu (i_size = %lld)\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno, dir_i_size);
@@ -452,6 +1504,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS;
}
+do_extend:
down_write(&OCFS2_I(dir)->ip_alloc_sem);
drop_alloc_sem = 1;
@@ -497,6 +1550,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
goto bail;
}
+bail_bh:
*new_de_bh = new_bh;
get_bh(*new_de_bh);
bail:
@@ -517,41 +1571,71 @@ bail:
return status;
}
-/*
- * Search the dir for a good spot, extending it if necessary. The
- * block containing an appropriate record is returned in ret_de_bh.
- */
-int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
- struct inode *dir,
- struct buffer_head *parent_fe_bh,
- const char *name,
- int namelen,
- struct buffer_head **ret_de_bh)
+static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
+ const char *name, int namelen,
+ struct buffer_head **ret_de_bh,
+ unsigned int *blocks_wanted)
{
- unsigned long offset;
- struct buffer_head * bh = NULL;
- unsigned short rec_len;
- struct ocfs2_dinode *fe;
- struct ocfs2_dir_entry *de;
- struct super_block *sb;
- int status;
+ int ret;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_dir_entry *de, *last_de = NULL;
+ char *de_buf, *limit;
+ unsigned long offset = 0;
+ unsigned int rec_len, new_rec_len;
+
+ de_buf = di->id2.i_data.id_data;
+ limit = de_buf + i_size_read(dir);
+ rec_len = OCFS2_DIR_REC_LEN(namelen);
- mlog_entry_void();
+ while (de_buf < limit) {
+ de = (struct ocfs2_dir_entry *)de_buf;
- mlog(0, "getting ready to insert namelen %d into dir %llu\n",
- namelen, (unsigned long long)OCFS2_I(dir)->ip_blkno);
+ if (!ocfs2_check_dir_entry(dir, de, di_bh, offset)) {
+ ret = -ENOENT;
+ goto out;
+ }
+ if (ocfs2_match(namelen, name, de)) {
+ ret = -EEXIST;
+ goto out;
+ }
+ if (ocfs2_dirent_would_fit(de, rec_len)) {
+ /* Ok, we found a spot. Return this bh and let
+ * the caller actually fill it in. */
+ *ret_de_bh = di_bh;
+ get_bh(*ret_de_bh);
+ ret = 0;
+ goto out;
+ }
- BUG_ON(!S_ISDIR(dir->i_mode));
- fe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
- BUG_ON(le64_to_cpu(fe->i_size) != i_size_read(dir));
+ last_de = de;
+ de_buf += le16_to_cpu(de->rec_len);
+ offset += le16_to_cpu(de->rec_len);
+ }
- sb = dir->i_sb;
+ /*
+ * We're going to require expansion of the directory - figure
+ * out how many blocks we'll need so that a place for the
+ * dirent can be found.
+ */
+ *blocks_wanted = 1;
+ new_rec_len = le16_to_cpu(last_de->rec_len) + (dir->i_sb->s_blocksize - i_size_read(dir));
+ if (new_rec_len < (rec_len + OCFS2_DIR_REC_LEN(last_de->name_len)))
+ *blocks_wanted = 2;
+
+ ret = -ENOSPC;
+out:
+ return ret;
+}
- if (!namelen) {
- status = -EINVAL;
- mlog_errno(status);
- goto bail;
- }
+static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
+ int namelen, struct buffer_head **ret_de_bh)
+{
+ unsigned long offset;
+ struct buffer_head *bh = NULL;
+ unsigned short rec_len;
+ struct ocfs2_dir_entry *de;
+ struct super_block *sb = dir->i_sb;
+ int status;
bh = ocfs2_bread(dir, 0, &status, 0);
if (!bh) {
@@ -568,17 +1652,11 @@ int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
bh = NULL;
if (i_size_read(dir) <= offset) {
- status = ocfs2_extend_dir(osb,
- dir,
- parent_fe_bh,
- &bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- BUG_ON(!bh);
- *ret_de_bh = bh;
- get_bh(*ret_de_bh);
+ /*
+ * Caller will have to expand this
+ * directory.
+ */
+ status = -ENOSPC;
goto bail;
}
bh = ocfs2_bread(dir,
@@ -600,10 +1678,7 @@ int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
status = -EEXIST;
goto bail;
}
- if (((le64_to_cpu(de->inode) == 0) &&
- (le16_to_cpu(de->rec_len) >= rec_len)) ||
- (le16_to_cpu(de->rec_len) >=
- (OCFS2_DIR_REC_LEN(de->name_len) + rec_len))) {
+ if (ocfs2_dirent_would_fit(de, rec_len)) {
/* Ok, we found a spot. Return this bh and let
* the caller actually fill it in. */
*ret_de_bh = bh;
@@ -623,3 +1698,61 @@ bail:
mlog_exit(status);
return status;
}
+
+int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
+ struct inode *dir,
+ struct buffer_head *parent_fe_bh,
+ const char *name,
+ int namelen,
+ struct buffer_head **ret_de_bh)
+{
+ int ret;
+ unsigned int blocks_wanted = 1;
+ struct buffer_head *bh = NULL;
+
+ mlog(0, "getting ready to insert namelen %d into dir %llu\n",
+ namelen, (unsigned long long)OCFS2_I(dir)->ip_blkno);
+
+ *ret_de_bh = NULL;
+
+ if (!namelen) {
+ ret = -EINVAL;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ret = ocfs2_find_dir_space_id(dir, parent_fe_bh, name,
+ namelen, &bh, &blocks_wanted);
+ } else
+ ret = ocfs2_find_dir_space_el(dir, name, namelen, &bh);
+
+ if (ret && ret != -ENOSPC) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (ret == -ENOSPC) {
+ /*
+ * We have to expand the directory to add this name.
+ */
+ BUG_ON(bh);
+
+ ret = ocfs2_extend_dir(osb, dir, parent_fe_bh, blocks_wanted,
+ &bh);
+ if (ret) {
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
+ goto out;
+ }
+
+ BUG_ON(!bh);
+ }
+
+ *ret_de_bh = bh;
+ bh = NULL;
+out:
+ if (bh)
+ brelse(bh);
+ return ret;
+}
diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h
index 3f67e146864..ce48b9080d8 100644
--- a/fs/ocfs2/dir.h
+++ b/fs/ocfs2/dir.h
@@ -26,17 +26,49 @@
#ifndef OCFS2_DIR_H
#define OCFS2_DIR_H
+struct buffer_head *ocfs2_find_entry(const char *name,
+ int namelen,
+ struct inode *dir,
+ struct ocfs2_dir_entry **res_dir);
+int ocfs2_delete_entry(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh);
+int __ocfs2_add_entry(handle_t *handle,
+ struct inode *dir,
+ const char *name, int namelen,
+ struct inode *inode, u64 blkno,
+ struct buffer_head *parent_fe_bh,
+ struct buffer_head *insert_bh);
+static inline int ocfs2_add_entry(handle_t *handle,
+ struct dentry *dentry,
+ struct inode *inode, u64 blkno,
+ struct buffer_head *parent_fe_bh,
+ struct buffer_head *insert_bh)
+{
+ return __ocfs2_add_entry(handle, dentry->d_parent->d_inode,
+ dentry->d_name.name, dentry->d_name.len,
+ inode, blkno, parent_fe_bh, insert_bh);
+}
+int ocfs2_update_entry(struct inode *dir, handle_t *handle,
+ struct buffer_head *de_bh, struct ocfs2_dir_entry *de,
+ struct inode *new_entry_inode);
+
int ocfs2_check_dir_for_entry(struct inode *dir,
const char *name,
int namelen);
-int ocfs2_empty_dir(struct inode *inode); /* FIXME: to namei.c */
+int ocfs2_empty_dir(struct inode *inode);
int ocfs2_find_files_on_disk(const char *name,
int namelen,
u64 *blkno,
struct inode *inode,
struct buffer_head **dirent_bh,
struct ocfs2_dir_entry **dirent);
+int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
+ int namelen, u64 *blkno);
int ocfs2_readdir(struct file *filp, void *dirent, filldir_t filldir);
+int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv,
+ filldir_t filldir);
int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
struct inode *dir,
struct buffer_head *parent_fe_bh,
@@ -44,11 +76,11 @@ int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
int namelen,
struct buffer_head **ret_de_bh);
struct ocfs2_alloc_context;
-int ocfs2_do_extend_dir(struct super_block *sb,
- handle_t *handle,
- struct inode *dir,
- struct buffer_head *parent_fe_bh,
- struct ocfs2_alloc_context *data_ac,
- struct ocfs2_alloc_context *meta_ac,
- struct buffer_head **new_bh);
+int ocfs2_fill_new_dir(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct inode *parent,
+ struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct ocfs2_alloc_context *data_ac);
+
#endif /* OCFS2_DIR_H */
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index f71250ed166..41c76ff2fcf 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -1482,6 +1482,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
lvb->lvb_imtime_packed =
cpu_to_be64(ocfs2_pack_timespec(&inode->i_mtime));
lvb->lvb_iattr = cpu_to_be32(oi->ip_attr);
+ lvb->lvb_idynfeatures = cpu_to_be16(oi->ip_dyn_features);
lvb->lvb_igeneration = cpu_to_be32(inode->i_generation);
out:
@@ -1515,6 +1516,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
i_size_write(inode, be64_to_cpu(lvb->lvb_isize));
oi->ip_attr = be32_to_cpu(lvb->lvb_iattr);
+ oi->ip_dyn_features = be16_to_cpu(lvb->lvb_idynfeatures);
ocfs2_set_inode_flags(inode);
/* fast-symlinks are a special case */
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
index 492bad32a8c..87a785e4120 100644
--- a/fs/ocfs2/dlmglue.h
+++ b/fs/ocfs2/dlmglue.h
@@ -29,12 +29,12 @@
#include "dcache.h"
-#define OCFS2_LVB_VERSION 4
+#define OCFS2_LVB_VERSION 5
struct ocfs2_meta_lvb {
__u8 lvb_version;
__u8 lvb_reserved0;
- __be16 lvb_reserved1;
+ __be16 lvb_idynfeatures;
__be32 lvb_iclusters;
__be32 lvb_iuid;
__be32 lvb_igid;
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index bc48177bd18..c3bbc198f9c 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -88,8 +88,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
struct dentry *parent;
struct inode *inode;
struct inode *dir = child->d_inode;
- struct buffer_head *dirent_bh = NULL;
- struct ocfs2_dir_entry *dirent;
mlog_entry("(0x%p, '%.*s')\n", child,
child->d_name.len, child->d_name.name);
@@ -105,8 +103,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
goto bail;
}
- status = ocfs2_find_files_on_disk("..", 2, &blkno, dir, &dirent_bh,
- &dirent);
+ status = ocfs2_lookup_ino_from_name(dir, "..", 2, &blkno);
if (status < 0) {
parent = ERR_PTR(-ENOENT);
goto bail_unlock;
@@ -131,9 +128,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
bail_unlock:
ocfs2_meta_unlock(dir, 0);
- if (dirent_bh)
- brelse(dirent_bh);
-
bail:
mlog_exit_ptr(parent);
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 03c1d365c78..c58668a326f 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -387,6 +387,12 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
struct ocfs2_extent_rec *rec;
u32 coff;
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ret = -ERANGE;
+ mlog_errno(ret);
+ goto out;
+ }
+
ret = ocfs2_extent_map_lookup(inode, v_cluster, p_cluster,
num_clusters, extent_flags);
if (ret == 0)
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index f3bc3658e7a..a62b14eb406 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -397,6 +397,15 @@ static int ocfs2_truncate_file(struct inode *inode,
unmap_mapping_range(inode->i_mapping, new_i_size + PAGE_SIZE - 1, 0, 1);
truncate_inode_pages(inode->i_mapping, new_i_size);
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ status = ocfs2_truncate_inline(inode, di_bh, new_i_size,
+ i_size_read(inode), 0);
+ if (status)
+ mlog_errno(status);
+
+ goto bail_unlock_data;
+ }
+
/* alright, we're going to need to do a full blown alloc size
* change. Orphan the inode so that recovery can complete the
* truncate if necessary. This does the task of marking
@@ -779,25 +788,6 @@ leave:
return status;
}
-static int ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
- u32 clusters_to_add, int mark_unwritten)
-{
- int ret;
-
- /*
- * The alloc sem blocks peope in read/write from reading our
- * allocation until we're done changing it. We depend on
- * i_mutex to block other extend/truncate calls while we're
- * here.
- */
- down_write(&OCFS2_I(inode)->ip_alloc_sem);
- ret = __ocfs2_extend_allocation(inode, logical_start, clusters_to_add,
- mark_unwritten);
- up_write(&OCFS2_I(inode)->ip_alloc_sem);
-
- return ret;
-}
-
/* Some parts of this taken from generic_cont_expand, which turned out
* to be too fragile to do exactly what we need without us having to
* worry about recursive locking in ->prepare_write() and
@@ -889,25 +879,48 @@ out:
return ret;
}
-/*
- * A tail_to_skip value > 0 indicates that we're being called from
- * ocfs2_file_aio_write(). This has the following implications:
- *
- * - we don't want to update i_size
- * - di_bh will be NULL, which is fine because it's only used in the
- * case where we want to update i_size.
- * - ocfs2_zero_extend() will then only be filling the hole created
- * between i_size and the start of the write.
- */
+int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size, u64 zero_to)
+{
+ int ret;
+ u32 clusters_to_add;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+
+ clusters_to_add = ocfs2_clusters_for_bytes(inode->i_sb, new_i_size);
+ if (clusters_to_add < oi->ip_clusters)
+ clusters_to_add = 0;
+ else
+ clusters_to_add -= oi->ip_clusters;
+
+ if (clusters_to_add) {
+ ret = __ocfs2_extend_allocation(inode, oi->ip_clusters,
+ clusters_to_add, 0);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ /*
+ * Call this even if we don't add any clusters to the tree. We
+ * still need to zero the area between the old i_size and the
+ * new i_size.
+ */
+ ret = ocfs2_zero_extend(inode, zero_to);
+ if (ret < 0)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
static int ocfs2_extend_file(struct inode *inode,
struct buffer_head *di_bh,
- u64 new_i_size,
- size_t tail_to_skip)
+ u64 new_i_size)
{
- int ret = 0;
- u32 clusters_to_add = 0;
+ int ret = 0, data_locked = 0;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
- BUG_ON(!tail_to_skip && !di_bh);
+ BUG_ON(!di_bh);
/* setattr sometimes calls us like this. */
if (new_i_size == 0)
@@ -917,13 +930,18 @@ static int ocfs2_extend_file(struct inode *inode,
goto out;
BUG_ON(new_i_size < i_size_read(inode));
- if (ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) {
- BUG_ON(tail_to_skip != 0);
+ /*
+ * Fall through for converting inline data, even if the fs
+ * supports sparse files.
+ *
+ * The check for inline data here is legal - nobody can add
+ * the feature since we have i_mutex. We must check it again
+ * after acquiring ip_alloc_sem though, as paths like mmap
+ * might have raced us to converting the inode to extents.
+ */
+ if (!(oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ && ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)))
goto out_update_size;
- }
-
- clusters_to_add = ocfs2_clusters_for_bytes(inode->i_sb, new_i_size) -
- OCFS2_I(inode)->ip_clusters;
/*
* protect the pages that ocfs2_zero_extend is going to be
@@ -937,39 +955,52 @@ static int ocfs2_extend_file(struct inode *inode,
mlog_errno(ret);
goto out;
}
+ data_locked = 1;
+
+ /*
+ * The alloc sem blocks people in read/write from reading our
+ * allocation until we're done changing it. We depend on
+ * i_mutex to block other extend/truncate calls while we're
+ * here.
+ */
+ down_write(&oi->ip_alloc_sem);
+
+ if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ /*
+ * We can optimize small extends by keeping the inodes
+ * inline data.
+ */
+ if (ocfs2_size_fits_inline_data(di_bh, new_i_size)) {
+ up_write(&oi->ip_alloc_sem);
+ goto out_update_size;
+ }
+
+ ret = ocfs2_convert_inline_data_to_extents(inode, di_bh);
+ if (ret) {
+ up_write(&oi->ip_alloc_sem);
- if (clusters_to_add) {
- ret = ocfs2_extend_allocation(inode,
- OCFS2_I(inode)->ip_clusters,
- clusters_to_add, 0);
- if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
}
- /*
- * Call this even if we don't add any clusters to the tree. We
- * still need to zero the area between the old i_size and the
- * new i_size.
- */
- ret = ocfs2_zero_extend(inode, (u64)new_i_size - tail_to_skip);
+ if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)))
+ ret = ocfs2_extend_no_holes(inode, new_i_size, new_i_size);
+
+ up_write(&oi->ip_alloc_sem);
+
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
out_update_size:
- if (!tail_to_skip) {
- /* We're being called from ocfs2_setattr() which wants
- * us to update i_size */
- ret = ocfs2_simple_size_update(inode, di_bh, new_i_size);
- if (ret < 0)
- mlog_errno(ret);
- }
+ ret = ocfs2_simple_size_update(inode, di_bh, new_i_size);
+ if (ret < 0)
+ mlog_errno(ret);
out_unlock:
- if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)))
+ if (data_locked)
ocfs2_data_unlock(inode, 1);
out:
@@ -1035,7 +1066,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
if (i_size_read(inode) > attr->ia_size)
status = ocfs2_truncate_file(inode, bh, attr->ia_size);
else
- status = ocfs2_extend_file(inode, bh, attr->ia_size, 0);
+ status = ocfs2_extend_file(inode, bh, attr->ia_size);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
@@ -1243,6 +1274,31 @@ static int ocfs2_allocate_unwritten_extents(struct inode *inode,
{
int ret;
u32 cpos, phys_cpos, clusters, alloc_size;
+ u64 end = start + len;
+ struct buffer_head *di_bh = NULL;
+
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ret = ocfs2_read_block(OCFS2_SB(inode->i_sb),
+ OCFS2_I(inode)->ip_blkno, &di_bh,
+ OCFS2_BH_CACHED, inode);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * Nothing to do if the requested reservation range
+ * fits within the inode.
+ */
+ if (ocfs2_size_fits_inline_data(di_bh, end))
+ goto out;
+
+ ret = ocfs2_convert_inline_data_to_extents(inode, di_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
/*
* We consider both start and len to be inclusive.
@@ -1288,6 +1344,8 @@ next:
ret = 0;
out:
+
+ brelse(di_bh);
return ret;
}
@@ -1469,6 +1527,14 @@ static int ocfs2_remove_inode_range(struct inode *inode,
if (byte_len == 0)
return 0;
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ret = ocfs2_truncate_inline(inode, di_bh, byte_start,
+ byte_start + byte_len, 1);
+ if (ret)
+ mlog_errno(ret);
+ return ret;
+ }
+
trunc_start = ocfs2_clusters_for_bytes(osb->sb, byte_start);
trunc_len = (byte_start + byte_len) >> osb->s_clustersize_bits;
if (trunc_len >= trunc_start)
@@ -1713,15 +1779,13 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
int appending,
int *direct_io)
{
- int ret = 0, meta_level = appending;
+ int ret = 0, meta_level = 0;
struct inode *inode = dentry->d_inode;
- u32 clusters;
- loff_t newsize, saved_pos;
+ loff_t saved_pos, end;
/*
- * We sample i_size under a read level meta lock to see if our write
- * is extending the file, if it is we back off and get a write level
- * meta lock.
+ * We start with a read level meta lock and only jump to an ex
+ * if we need to make modifications here.
*/
for(;;) {
ret = ocfs2_meta_lock(inode, NULL, meta_level);
@@ -1763,87 +1827,47 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
saved_pos = *ppos;
}
- if (ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) {
- loff_t end = saved_pos + count;
+ end = saved_pos + count;
- /*
- * Skip the O_DIRECT checks if we don't need
- * them.
- */
- if (!direct_io || !(*direct_io))
- break;
-
- /*
- * Allowing concurrent direct writes means
- * i_size changes wouldn't be synchronized, so
- * one node could wind up truncating another
- * nodes writes.
- */
- if (end > i_size_read(inode)) {
- *direct_io = 0;
- break;
- }
-
- /*
- * We don't fill holes during direct io, so
- * check for them here. If any are found, the
- * caller will have to retake some cluster
- * locks and initiate the io as buffered.
- */
- ret = ocfs2_check_range_for_holes(inode, saved_pos,
- count);
- if (ret == 1) {
- *direct_io = 0;
- ret = 0;
- } else if (ret < 0)
- mlog_errno(ret);
+ /*
+ * Skip the O_DIRECT checks if we don't need
+ * them.
+ */
+ if (!direct_io || !(*direct_io))
break;
- }
/*
- * The rest of this loop is concerned with legacy file
- * systems which don't support sparse files.
+ * There's no sane way to do direct writes to an inode
+ * with inline data.
*/
-
- newsize = count + saved_pos;
-
- mlog(0, "pos=%lld newsize=%lld cursize=%lld\n",
- (long long) saved_pos, (long long) newsize,
- (long long) i_size_read(inode));
-
- /* No need for a higher level metadata lock if we're
- * never going past i_size. */
- if (newsize <= i_size_read(inode))
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ *direct_io = 0;
break;
-
- if (meta_level == 0) {
- ocfs2_meta_unlock(inode, meta_level);
- meta_level = 1;
- continue;
}
- spin_lock(&OCFS2_I(inode)->ip_lock);
- clusters = ocfs2_clusters_for_bytes(inode->i_sb, newsize) -
- OCFS2_I(inode)->ip_clusters;
- spin_unlock(&OCFS2_I(inode)->ip_lock);
-
- mlog(0, "Writing at EOF, may need more allocation: "
- "i_size = %lld, newsize = %lld, need %u clusters\n",
- (long long) i_size_read(inode), (long long) newsize,
- clusters);
-
- /* We only want to continue the rest of this loop if
- * our extend will actually require more
- * allocation. */
- if (!clusters)
+ /*
+ * Allowing concurrent direct writes means
+ * i_size changes wouldn't be synchronized, so
+ * one node could wind up truncating another
+ * nodes writes.
+ */
+ if (end > i_size_read(inode)) {
+ *direct_io = 0;
break;
-
- ret = ocfs2_extend_file(inode, NULL, newsize, count);
- if (ret < 0) {
- if (ret != -ENOSPC)
- mlog_errno(ret);
- goto out_unlock;
}
+
+ /*
+ * We don't fill holes during direct io, so
+ * check for them here. If any are found, the
+ * caller will have to retake some cluster
+ * locks and initiate the io as buffered.
+ */
+ ret = ocfs2_check_range_for_holes(inode, saved_pos, count);
+ if (ret == 1) {
+ *direct_io = 0;
+ ret = 0;
+ } else if (ret < 0)
+ mlog_errno(ret);
break;
}
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 36fe27f268e..066f14add3a 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -47,6 +47,8 @@ int ocfs2_do_extend_allocation(struct ocfs2_super *osb,
struct ocfs2_alloc_context *data_ac,
struct ocfs2_alloc_context *meta_ac,
enum ocfs2_alloc_restarted *reason_ret);
+int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size,
+ u64 zero_to);
int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_dinode *di,
u32 clusters_to_add, u32 extents_to_split,
struct ocfs2_alloc_context **data_ac,
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index c53a6763bbb..1d5e0cb0fda 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -241,6 +241,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
+ OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
inode->i_version = 1;
inode->i_generation = le32_to_cpu(fe->i_generation);
@@ -513,6 +514,10 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
fe = (struct ocfs2_dinode *) fe_bh->b_data;
+ /*
+ * This check will also skip truncate of inodes with inline
+ * data and fast symlinks.
+ */
if (fe->i_clusters) {
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
@@ -1220,6 +1225,7 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
ocfs2_get_inode_flags(OCFS2_I(inode));
fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
+ fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
spin_unlock(&OCFS2_I(inode)->ip_lock);
fe->i_size = cpu_to_le64(i_size_read(inode));
@@ -1257,6 +1263,7 @@ void ocfs2_refresh_inode(struct inode *inode,
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
+ OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
ocfs2_set_inode_flags(inode);
i_size_write(inode, le64_to_cpu(fe->i_size));
inode->i_nlink = le16_to_cpu(fe->i_links_count);
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index a41d0817121..70e881c5553 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -51,6 +51,7 @@ struct ocfs2_inode_info
u32 ip_flags; /* see below */
u32 ip_attr; /* inode attributes */
+ u16 ip_dyn_features;
/* protected by recovery_lock. */
struct inode *ip_next_orphan;
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index dbfb20bb27e..f9d01e25298 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -35,13 +35,13 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "dir.h"
#include "dlmglue.h"
#include "extent_map.h"
#include "heartbeat.h"
#include "inode.h"
#include "journal.h"
#include "localalloc.h"
-#include "namei.h"
#include "slot_map.h"
#include "super.h"
#include "vote.h"
@@ -1213,17 +1213,49 @@ bail:
return status;
}
+struct ocfs2_orphan_filldir_priv {
+ struct inode *head;
+ struct ocfs2_super *osb;
+};
+
+static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len,
+ loff_t pos, u64 ino, unsigned type)
+{
+ struct ocfs2_orphan_filldir_priv *p = priv;
+ struct inode *iter;
+
+ if (name_len == 1 && !strncmp(".", name, 1))
+ return 0;
+ if (name_len == 2 && !strncmp("..", name, 2))
+ return 0;
+
+ /* Skip bad inodes so that recovery can continue */
+ iter = ocfs2_iget(p->osb, ino,
+ OCFS2_FI_FLAG_ORPHAN_RECOVERY);
+ if (IS_ERR(iter))
+ return 0;
+
+ mlog(0, "queue orphan %llu\n",
+ (unsigned long long)OCFS2_I(iter)->ip_blkno);
+ /* No locking is required for the next_orphan queue as there
+ * is only ever a single process doing orphan recovery. */
+ OCFS2_I(iter)->ip_next_orphan = p->head;
+ p->head = iter;
+
+ return 0;
+}
+
static int ocfs2_queue_orphans(struct ocfs2_super *osb,
int slot,
struct inode **head)
{
int status;
struct inode *orphan_dir_inode = NULL;
- struct inode *iter;
- unsigned long offset, blk, local;
- struct buffer_head *bh = NULL;
- struct ocfs2_dir_entry *de;
- struct super_block *sb = osb->sb;
+ struct ocfs2_orphan_filldir_priv priv;
+ loff_t pos = 0;
+
+ priv.osb = osb;
+ priv.head = *head;
orphan_dir_inode = ocfs2_get_system_file_inode(osb,
ORPHAN_DIR_SYSTEM_INODE,
@@ -1241,77 +1273,15 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
goto out;
}
- offset = 0;
- iter = NULL;
- while(offset < i_size_read(orphan_dir_inode)) {
- blk = offset >> sb->s_blocksize_bits;
-
- bh = ocfs2_bread(orphan_dir_inode, blk, &status, 0);
- if (!bh)
- status = -EINVAL;
- if (status < 0) {
- if (bh)
- brelse(bh);
- mlog_errno(status);
- goto out_unlock;
- }
-
- local = 0;
- while(offset < i_size_read(orphan_dir_inode)
- && local < sb->s_blocksize) {
- de = (struct ocfs2_dir_entry *) (bh->b_data + local);
-
- if (!ocfs2_check_dir_entry(orphan_dir_inode,
- de, bh, local)) {
- status = -EINVAL;
- mlog_errno(status);
- brelse(bh);
- goto out_unlock;
- }
-
- local += le16_to_cpu(de->rec_len);
- offset += le16_to_cpu(de->rec_len);
-
- /* I guess we silently fail on no inode? */
- if (!le64_to_cpu(de->inode))
- continue;
- if (de->file_type > OCFS2_FT_MAX) {
- mlog(ML_ERROR,
- "block %llu contains invalid de: "
- "inode = %llu, rec_len = %u, "
- "name_len = %u, file_type = %u, "
- "name='%.*s'\n",
- (unsigned long long)bh->b_blocknr,
- (unsigned long long)le64_to_cpu(de->inode),
- le16_to_cpu(de->rec_len),
- de->name_len,
- de->file_type,
- de->name_len,
- de->name);
- continue;
- }
- if (de->name_len == 1 && !strncmp(".", de->name, 1))
- continue;
- if (de->name_len == 2 && !strncmp("..", de->name, 2))
- continue;
-
- iter = ocfs2_iget(osb, le64_to_cpu(de->inode),
- OCFS2_FI_FLAG_ORPHAN_RECOVERY);
- if (IS_ERR(iter))
- continue;
-
- mlog(0, "queue orphan %llu\n",
- (unsigned long long)OCFS2_I(iter)->ip_blkno);
- /* No locking is required for the next_orphan
- * queue as there is only ever a single
- * process doing orphan recovery. */
- OCFS2_I(iter)->ip_next_orphan = *head;
- *head = iter;
- }
- brelse(bh);
+ status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv,
+ ocfs2_orphan_filldir);
+ if (status) {
+ mlog_errno(status);
+ goto out;
}
-out_unlock:
+ *head = priv.head;
+
ocfs2_meta_unlock(orphan_dir_inode, 0);
out:
mutex_unlock(&orphan_dir_inode->i_mutex);
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index ce60aab013a..4b32e096156 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -282,6 +282,9 @@ int ocfs2_journal_dirty_data(handle_t *handle,
* prev. group desc. if we relink. */
#define OCFS2_SUBALLOC_ALLOC (3)
+#define OCFS2_INLINE_TO_EXTENTS_CREDITS (OCFS2_SUBALLOC_ALLOC \
+ + OCFS2_INODE_UPDATE_CREDITS)
+
/* dinode + group descriptor update. We don't relink on free yet. */
#define OCFS2_SUBALLOC_FREE (2)
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 701e6d04ed5..729259016c1 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -64,29 +64,6 @@
#include "buffer_head_io.h"
-#define NAMEI_RA_CHUNKS 2
-#define NAMEI_RA_BLOCKS 4
-#define NAMEI_RA_SIZE (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
-#define NAMEI_RA_INDEX(c,b) (((c) * NAMEI_RA_BLOCKS) + (b))
-
-static int inline ocfs2_search_dirblock(struct buffer_head *bh,
- struct inode *dir,
- const char *name, int namelen,
- unsigned long offset,
- struct ocfs2_dir_entry **res_dir);
-
-static int ocfs2_delete_entry(handle_t *handle,
- struct inode *dir,
- struct ocfs2_dir_entry *de_del,
- struct buffer_head *bh);
-
-static int __ocfs2_add_entry(handle_t *handle,
- struct inode *dir,
- const char *name, int namelen,
- struct inode *inode, u64 blkno,
- struct buffer_head *parent_fe_bh,
- struct buffer_head *insert_bh);
-
static int ocfs2_mknod_locked(struct ocfs2_super *osb,
struct inode *dir,
struct dentry *dentry, int mode,
@@ -97,13 +74,6 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
struct inode **ret_inode,
struct ocfs2_alloc_context *inode_ac);
-static int ocfs2_fill_new_dir(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *parent,
- struct inode *inode,
- struct buffer_head *fe_bh,
- struct ocfs2_alloc_context *data_ac);
-
static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
struct inode **ret_orphan_dir,
struct inode *inode,
@@ -123,17 +93,6 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
struct inode *inode,
const char *symname);
-static inline int ocfs2_add_entry(handle_t *handle,
- struct dentry *dentry,
- struct inode *inode, u64 blkno,
- struct buffer_head *parent_fe_bh,
- struct buffer_head *insert_bh)
-{
- return __ocfs2_add_entry(handle, dentry->d_parent->d_inode,
- dentry->d_name.name, dentry->d_name.len,
- inode, blkno, parent_fe_bh, insert_bh);
-}
-
/* An orphan dir name is an 8 byte value, printed as a hex string */
#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
@@ -142,10 +101,8 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
{
int status;
u64 blkno;
- struct buffer_head *dirent_bh = NULL;
struct inode *inode = NULL;
struct dentry *ret;
- struct ocfs2_dir_entry *dirent;
struct ocfs2_inode_info *oi;
mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
@@ -167,9 +124,8 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
goto bail;
}
- status = ocfs2_find_files_on_disk(dentry->d_name.name,
- dentry->d_name.len, &blkno,
- dir, &dirent_bh, &dirent);
+ status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
+ dentry->d_name.len, &blkno);
if (status < 0)
goto bail_add;
@@ -224,83 +180,12 @@ bail_unlock:
ocfs2_meta_unlock(dir, 0);
bail:
- if (dirent_bh)
- brelse(dirent_bh);
mlog_exit_ptr(ret);
return ret;
}
-static int ocfs2_fill_new_dir(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *parent,
- struct inode *inode,
- struct buffer_head *fe_bh,
- struct ocfs2_alloc_context *data_ac)
-{
- int status;
- struct buffer_head *new_bh = NULL;
- struct ocfs2_dir_entry *de = NULL;
-
- mlog_entry_void();
-
- status = ocfs2_do_extend_dir(osb->sb, handle, inode, fe_bh,
- data_ac, NULL, &new_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- ocfs2_set_new_buffer_uptodate(inode, new_bh);
-
- status = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- memset(new_bh->b_data, 0, osb->sb->s_blocksize);
-
- de = (struct ocfs2_dir_entry *) new_bh->b_data;
- de->inode = cpu_to_le64(OCFS2_I(inode)->ip_blkno);
- de->name_len = 1;
- de->rec_len =
- cpu_to_le16(OCFS2_DIR_REC_LEN(de->name_len));
- strcpy(de->name, ".");
- ocfs2_set_de_type(de, S_IFDIR);
- de = (struct ocfs2_dir_entry *) ((char *)de + le16_to_cpu(de->rec_len));
- de->inode = cpu_to_le64(OCFS2_I(parent)->ip_blkno);
- de->rec_len = cpu_to_le16(inode->i_sb->s_blocksize -
- OCFS2_DIR_REC_LEN(1));
- de->name_len = 2;
- strcpy(de->name, "..");
- ocfs2_set_de_type(de, S_IFDIR);
-
- status = ocfs2_journal_dirty(handle, new_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- i_size_write(inode, inode->i_sb->s_blocksize);
- inode->i_nlink = 2;
- inode->i_blocks = ocfs2_inode_sector_count(inode);
- status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- status = 0;
-bail:
- if (new_bh)
- brelse(new_bh);
-
- mlog_exit(status);
- return status;
-}
-
static int ocfs2_mknod(struct inode *dir,
struct dentry *dentry,
int mode,
@@ -365,9 +250,8 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
- /* are we making a directory? If so, reserve a cluster for his
- * 1st extent. */
- if (S_ISDIR(mode)) {
+ /* Reserve a cluster if creating an extent based directory. */
+ if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
status = ocfs2_reserve_clusters(osb, 1, &data_ac);
if (status < 0) {
if (status != -ENOSPC)
@@ -564,10 +448,21 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
cpu_to_le32(CURRENT_TIME.tv_nsec);
fe->i_dtime = 0;
- fel = &fe->id2.i_list;
- fel->l_tree_depth = 0;
- fel->l_next_free_rec = 0;
- fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
+ /*
+ * If supported, directories start with inline data.
+ */
+ if (S_ISDIR(mode) && ocfs2_supports_inline_data(osb)) {
+ u16 feat = le16_to_cpu(fe->i_dyn_features);
+
+ fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
+
+ fe->id2.i_data.id_count = cpu_to_le16(ocfs2_max_inline_data(osb->sb));
+ } else {
+ fel = &fe->id2.i_list;
+ fel->l_tree_depth = 0;
+ fel->l_next_free_rec = 0;
+ fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
+ }
status = ocfs2_journal_dirty(handle, *new_fe_bh);
if (status < 0) {
@@ -1048,11 +943,6 @@ static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
ocfs2_meta_unlock(inode2, 1);
}
-#define PARENT_INO(buffer) \
- ((struct ocfs2_dir_entry *) \
- ((char *)buffer + \
- le16_to_cpu(((struct ocfs2_dir_entry *)buffer)->rec_len)))->inode
-
static int ocfs2_rename(struct inode *old_dir,
struct dentry *old_dentry,
struct inode *new_dir,
@@ -1070,12 +960,12 @@ static int ocfs2_rename(struct inode *old_dir,
struct buffer_head *old_inode_bh = NULL;
struct buffer_head *insert_entry_bh = NULL;
struct ocfs2_super *osb = NULL;
- u64 newfe_blkno;
+ u64 newfe_blkno, old_de_ino;
handle_t *handle = NULL;
struct buffer_head *old_dir_bh = NULL;
struct buffer_head *new_dir_bh = NULL;
- struct ocfs2_dir_entry *old_de = NULL, *new_de = NULL; // dirent for old_dentry
- // and new_dentry
+ struct ocfs2_dir_entry *old_inode_dot_dot_de = NULL, *old_de = NULL,
+ *new_de = NULL;
struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above
struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir,
// this is the 1st dirent bh
@@ -1159,27 +1049,35 @@ static int ocfs2_rename(struct inode *old_dir,
}
if (S_ISDIR(old_inode->i_mode)) {
- status = -EIO;
- old_inode_de_bh = ocfs2_bread(old_inode, 0, &status, 0);
- if (!old_inode_de_bh)
+ u64 old_inode_parent;
+
+ status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
+ old_inode, &old_inode_de_bh,
+ &old_inode_dot_dot_de);
+ if (status) {
+ status = -EIO;
goto bail;
+ }
- status = -EIO;
- if (le64_to_cpu(PARENT_INO(old_inode_de_bh->b_data)) !=
- OCFS2_I(old_dir)->ip_blkno)
+ if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
+ status = -EIO;
goto bail;
- status = -EMLINK;
- if (!new_inode && new_dir!=old_dir &&
- new_dir->i_nlink >= OCFS2_LINK_MAX)
+ }
+
+ if (!new_inode && new_dir != old_dir &&
+ new_dir->i_nlink >= OCFS2_LINK_MAX) {
+ status = -EMLINK;
goto bail;
+ }
}
- status = -ENOENT;
- old_de_bh = ocfs2_find_entry(old_dentry->d_name.name,
- old_dentry->d_name.len,
- old_dir, &old_de);
- if (!old_de_bh)
+ status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
+ old_dentry->d_name.len,
+ &old_de_ino);
+ if (status) {
+ status = -ENOENT;
goto bail;
+ }
/*
* Check for inode number is _not_ due to possible IO errors.
@@ -1187,8 +1085,10 @@ static int ocfs2_rename(struct inode *old_dir,
* and merrily kill the link to whatever was created under the
* same name. Goodbye sticky bit ;-<
*/
- if (le64_to_cpu(old_de->inode) != OCFS2_I(old_inode)->ip_blkno)
+ if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
+ status = -ENOENT;
goto bail;
+ }
/* check if the target already exists (in which case we need
* to delete it */
@@ -1321,20 +1221,13 @@ static int ocfs2_rename(struct inode *old_dir,
}
/* change the dirent to point to the correct inode */
- status = ocfs2_journal_access(handle, new_dir, new_de_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_update_entry(new_dir, handle, new_de_bh,
+ new_de, old_inode);
if (status < 0) {
mlog_errno(status);
goto bail;
}
- new_de->inode = cpu_to_le64(OCFS2_I(old_inode)->ip_blkno);
- new_de->file_type = old_de->file_type;
new_dir->i_version++;
- status = ocfs2_journal_dirty(handle, new_de_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
if (S_ISDIR(new_inode->i_mode))
newfe->i_links_count = 0;
@@ -1370,7 +1263,21 @@ static int ocfs2_rename(struct inode *old_dir,
} else
mlog_errno(status);
- /* now that the name has been added to new_dir, remove the old name */
+ /*
+ * Now that the name has been added to new_dir, remove the old name.
+ *
+ * We don't keep any directory entry context around until now
+ * because the insert might have changed the type of directory
+ * we're dealing with.
+ */
+ old_de_bh = ocfs2_find_entry(old_dentry->d_name.name,
+ old_dentry->d_name.len,
+ old_dir, &old_de);
+ if (!old_de_bh) {
+ status = -EIO;
+ goto bail;
+ }
+
status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh);
if (status < 0) {
mlog_errno(status);
@@ -1383,12 +1290,8 @@ static int ocfs2_rename(struct inode *old_dir,
}
old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
if (old_inode_de_bh) {
- status = ocfs2_journal_access(handle, old_inode,
- old_inode_de_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- PARENT_INO(old_inode_de_bh->b_data) =
- cpu_to_le64(OCFS2_I(new_dir)->ip_blkno);
- status = ocfs2_journal_dirty(handle, old_inode_de_bh);
+ status = ocfs2_update_entry(old_inode, handle, old_inode_de_bh,
+ old_inode_dot_dot_de, new_dir);
old_dir->i_nlink--;
if (new_inode) {
new_inode->i_nlink--;
@@ -1767,329 +1670,6 @@ bail:
return status;
}
-int ocfs2_check_dir_entry(struct inode * dir,
- struct ocfs2_dir_entry * de,
- struct buffer_head * bh,
- unsigned long offset)
-{
- const char *error_msg = NULL;
- const int rlen = le16_to_cpu(de->rec_len);
-
- if (rlen < OCFS2_DIR_REC_LEN(1))
- error_msg = "rec_len is smaller than minimal";
- else if (rlen % 4 != 0)
- error_msg = "rec_len % 4 != 0";
- else if (rlen < OCFS2_DIR_REC_LEN(de->name_len))
- error_msg = "rec_len is too small for name_len";
- else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
- error_msg = "directory entry across blocks";
-
- if (error_msg != NULL)
- mlog(ML_ERROR, "bad entry in directory #%llu: %s - "
- "offset=%lu, inode=%llu, rec_len=%d, name_len=%d\n",
- (unsigned long long)OCFS2_I(dir)->ip_blkno, error_msg,
- offset, (unsigned long long)le64_to_cpu(de->inode), rlen,
- de->name_len);
- return error_msg == NULL ? 1 : 0;
-}
-
-/* we don't always have a dentry for what we want to add, so people
- * like orphan dir can call this instead.
- *
- * If you pass me insert_bh, I'll skip the search of the other dir
- * blocks and put the record in there.
- */
-static int __ocfs2_add_entry(handle_t *handle,
- struct inode *dir,
- const char *name, int namelen,
- struct inode *inode, u64 blkno,
- struct buffer_head *parent_fe_bh,
- struct buffer_head *insert_bh)
-{
- unsigned long offset;
- unsigned short rec_len;
- struct ocfs2_dir_entry *de, *de1;
- struct super_block *sb;
- int retval, status;
-
- mlog_entry_void();
-
- sb = dir->i_sb;
-
- if (!namelen)
- return -EINVAL;
-
- rec_len = OCFS2_DIR_REC_LEN(namelen);
- offset = 0;
- de = (struct ocfs2_dir_entry *) insert_bh->b_data;
- while (1) {
- BUG_ON((char *)de >= sb->s_blocksize + insert_bh->b_data);
- /* These checks should've already been passed by the
- * prepare function, but I guess we can leave them
- * here anyway. */
- if (!ocfs2_check_dir_entry(dir, de, insert_bh, offset)) {
- retval = -ENOENT;
- goto bail;
- }
- if (ocfs2_match(namelen, name, de)) {
- retval = -EEXIST;
- goto bail;
- }
- if (((le64_to_cpu(de->inode) == 0) &&
- (le16_to_cpu(de->rec_len) >= rec_len)) ||
- (le16_to_cpu(de->rec_len) >=
- (OCFS2_DIR_REC_LEN(de->name_len) + rec_len))) {
- dir->i_mtime = dir->i_ctime = CURRENT_TIME;
- retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
- if (retval < 0) {
- mlog_errno(retval);
- goto bail;
- }
-
- status = ocfs2_journal_access(handle, dir, insert_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- /* By now the buffer is marked for journaling */
- offset += le16_to_cpu(de->rec_len);
- if (le64_to_cpu(de->inode)) {
- de1 = (struct ocfs2_dir_entry *)((char *) de +
- OCFS2_DIR_REC_LEN(de->name_len));
- de1->rec_len =
- cpu_to_le16(le16_to_cpu(de->rec_len) -
- OCFS2_DIR_REC_LEN(de->name_len));
- de->rec_len = cpu_to_le16(OCFS2_DIR_REC_LEN(de->name_len));
- de = de1;
- }
- de->file_type = OCFS2_FT_UNKNOWN;
- if (blkno) {
- de->inode = cpu_to_le64(blkno);
- ocfs2_set_de_type(de, inode->i_mode);
- } else
- de->inode = 0;
- de->name_len = namelen;
- memcpy(de->name, name, namelen);
-
- dir->i_version++;
- status = ocfs2_journal_dirty(handle, insert_bh);
- retval = 0;
- goto bail;
- }
- offset += le16_to_cpu(de->rec_len);
- de = (struct ocfs2_dir_entry *) ((char *) de + le16_to_cpu(de->rec_len));
- }
-
- /* when you think about it, the assert above should prevent us
- * from ever getting here. */
- retval = -ENOSPC;
-bail:
-
- mlog_exit(retval);
- return retval;
-}
-
-
-/*
- * ocfs2_delete_entry deletes a directory entry by merging it with the
- * previous entry
- */
-static int ocfs2_delete_entry(handle_t *handle,
- struct inode *dir,
- struct ocfs2_dir_entry *de_del,
- struct buffer_head *bh)
-{
- struct ocfs2_dir_entry *de, *pde;
- int i, status = -ENOENT;
-
- mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p)\n", handle, dir, de_del, bh);
-
- i = 0;
- pde = NULL;
- de = (struct ocfs2_dir_entry *) bh->b_data;
- while (i < bh->b_size) {
- if (!ocfs2_check_dir_entry(dir, de, bh, i)) {
- status = -EIO;
- mlog_errno(status);
- goto bail;
- }
- if (de == de_del) {
- status = ocfs2_journal_access(handle, dir, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- status = -EIO;
- mlog_errno(status);
- goto bail;
- }
- if (pde)
- pde->rec_len =
- cpu_to_le16(le16_to_cpu(pde->rec_len) +
- le16_to_cpu(de->rec_len));
- else
- de->inode = 0;
- dir->i_version++;
- status = ocfs2_journal_dirty(handle, bh);
- goto bail;
- }
- i += le16_to_cpu(de->rec_len);
- pde = de;
- de = (struct ocfs2_dir_entry *)((char *)de + le16_to_cpu(de->rec_len));
- }
-bail:
- mlog_exit(status);
- return status;
-}
-
-/*
- * Returns 0 if not found, -1 on failure, and 1 on success
- */
-static int inline ocfs2_search_dirblock(struct buffer_head *bh,
- struct inode *dir,
- const char *name, int namelen,
- unsigned long offset,
- struct ocfs2_dir_entry **res_dir)
-{
- struct ocfs2_dir_entry *de;
- char *dlimit, *de_buf;
- int de_len;
- int ret = 0;
-
- mlog_entry_void();
-
- de_buf = bh->b_data;
- dlimit = de_buf + dir->i_sb->s_blocksize;
-
- while (de_buf < dlimit) {
- /* this code is executed quadratically often */
- /* do minimal checking `by hand' */
-
- de = (struct ocfs2_dir_entry *) de_buf;
-
- if (de_buf + namelen <= dlimit &&
- ocfs2_match(namelen, name, de)) {
- /* found a match - just to be sure, do a full check */
- if (!ocfs2_check_dir_entry(dir, de, bh, offset)) {
- ret = -1;
- goto bail;
- }
- *res_dir = de;
- ret = 1;
- goto bail;
- }
-
- /* prevent looping on a bad block */
- de_len = le16_to_cpu(de->rec_len);
- if (de_len <= 0) {
- ret = -1;
- goto bail;
- }
-
- de_buf += de_len;
- offset += de_len;
- }
-
-bail:
- mlog_exit(ret);
- return ret;
-}
-
-struct buffer_head *ocfs2_find_entry(const char *name, int namelen,
- struct inode *dir,
- struct ocfs2_dir_entry **res_dir)
-{
- struct super_block *sb;
- struct buffer_head *bh_use[NAMEI_RA_SIZE];
- struct buffer_head *bh, *ret = NULL;
- unsigned long start, block, b;
- int ra_max = 0; /* Number of bh's in the readahead
- buffer, bh_use[] */
- int ra_ptr = 0; /* Current index into readahead
- buffer */
- int num = 0;
- int nblocks, i, err;
-
- mlog_entry_void();
-
- *res_dir = NULL;
- sb = dir->i_sb;
-
- nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
- start = OCFS2_I(dir)->ip_dir_start_lookup;
- if (start >= nblocks)
- start = 0;
- block = start;
-
-restart:
- do {
- /*
- * We deal with the read-ahead logic here.
- */
- if (ra_ptr >= ra_max) {
- /* Refill the readahead buffer */
- ra_ptr = 0;
- b = block;
- for (ra_max = 0; ra_max < NAMEI_RA_SIZE; ra_max++) {
- /*
- * Terminate if we reach the end of the
- * directory and must wrap, or if our
- * search has finished at this block.
- */
- if (b >= nblocks || (num && block == start)) {
- bh_use[ra_max] = NULL;
- break;
- }
- num++;
-
- bh = ocfs2_bread(dir, b++, &err, 1);
- bh_use[ra_max] = bh;
- }
- }
- if ((bh = bh_use[ra_ptr++]) == NULL)
- goto next;
- wait_on_buffer(bh);
- if (!buffer_uptodate(bh)) {
- /* read error, skip block & hope for the best */
- ocfs2_error(dir->i_sb, "reading directory %llu, "
- "offset %lu\n",
- (unsigned long long)OCFS2_I(dir)->ip_blkno,
- block);
- brelse(bh);
- goto next;
- }
- i = ocfs2_search_dirblock(bh, dir, name, namelen,
- block << sb->s_blocksize_bits,
- res_dir);
- if (i == 1) {
- OCFS2_I(dir)->ip_dir_start_lookup = block;
- ret = bh;
- goto cleanup_and_exit;
- } else {
- brelse(bh);
- if (i < 0)
- goto cleanup_and_exit;
- }
- next:
- if (++block >= nblocks)
- block = 0;
- } while (block != start);
-
- /*
- * If the directory has grown while we were searching, then
- * search the last part of the directory before giving up.
- */
- block = nblocks;
- nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
- if (block < nblocks) {
- start = 0;
- goto restart;
- }
-
-cleanup_and_exit:
- /* Clean up the read-ahead blocks */
- for (; ra_ptr < ra_max; ra_ptr++)
- brelse(bh_use[ra_ptr]);
-
- mlog_exit_ptr(ret);
- return ret;
-}
-
static int ocfs2_blkno_stringify(u64 blkno, char *name)
{
int status, namelen;
diff --git a/fs/ocfs2/namei.h b/fs/ocfs2/namei.h
index 0975c7b7212..688aef64c87 100644
--- a/fs/ocfs2/namei.h
+++ b/fs/ocfs2/namei.h
@@ -30,29 +30,10 @@ extern const struct inode_operations ocfs2_dir_iops;
struct dentry *ocfs2_get_parent(struct dentry *child);
-int ocfs2_check_dir_entry (struct inode *dir,
- struct ocfs2_dir_entry *de,
- struct buffer_head *bh,
- unsigned long offset);
-struct buffer_head *ocfs2_find_entry(const char *name,
- int namelen,
- struct inode *dir,
- struct ocfs2_dir_entry **res_dir);
int ocfs2_orphan_del(struct ocfs2_super *osb,
handle_t *handle,
struct inode *orphan_dir_inode,
struct inode *inode,
struct buffer_head *orphan_dir_bh);
-static inline int ocfs2_match(int len,
- const char * const name,
- struct ocfs2_dir_entry *de)
-{
- if (len != de->name_len)
- return 0;
- if (!de->inode)
- return 0;
- return !memcmp(name, de->name, len);
-}
-
#endif /* OCFS2_NAMEI_H */
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 58307853fb4..60a23e1906b 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -319,6 +319,13 @@ static inline int ocfs2_writes_unwritten_extents(struct ocfs2_super *osb)
return 0;
}
+static inline int ocfs2_supports_inline_data(struct ocfs2_super *osb)
+{
+ if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_INLINE_DATA)
+ return 1;
+ return 0;
+}
+
/* set / clear functions because cluster events can make these happen
* in parallel so we want the transitions to be atomic. this also
* means that any future flags osb_flags must be protected by spinlock
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 82f8a75b207..6ef876759a7 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -87,7 +87,8 @@
#define OCFS2_FEATURE_COMPAT_SUPP OCFS2_FEATURE_COMPAT_BACKUP_SB
#define OCFS2_FEATURE_INCOMPAT_SUPP (OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \
- | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC)
+ | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC \
+ | OCFS2_FEATURE_INCOMPAT_INLINE_DATA)
#define OCFS2_FEATURE_RO_COMPAT_SUPP OCFS2_FEATURE_RO_COMPAT_UNWRITTEN
/*
@@ -111,6 +112,20 @@
#define OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC 0x0010
/*
+ * Tunefs sets this incompat flag before starting an operation which
+ * would require cleanup on abort. This is done to protect users from
+ * inadvertently mounting the fs after an aborted run without
+ * fsck-ing.
+ *
+ * s_tunefs_flags on the super block describes precisely which
+ * operations were in progress.
+ */
+#define OCFS2_FEATURE_INCOMPAT_TUNEFS_INPROG 0x0020
+
+/* Support for data packed into inode blocks */
+#define OCFS2_FEATURE_INCOMPAT_INLINE_DATA 0x0040
+
+/*
* backup superblock flag is used to indicate that this volume
* has backup superblocks.
*/
@@ -130,6 +145,11 @@
#define OCFS2_MAX_BACKUP_SUPERBLOCKS 6
/*
+ * Flags on ocfs2_super_block.s_tunefs_flags
+ */
+#define OCFS2_TUNEFS_INPROG_REMOVE_SLOT 0x0001 /* Removing slots */
+
+/*
* Flags on ocfs2_dinode.i_flags
*/
#define OCFS2_VALID_FL (0x00000001) /* Inode is valid */
@@ -146,6 +166,17 @@
#define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */
#define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */
+/*
+ * Flags on ocfs2_dinode.i_dyn_features
+ *
+ * These can change much more often than i_flags. When adding flags,
+ * keep in mind that i_dyn_features is only 16 bits wide.
+ */
+#define OCFS2_INLINE_DATA_FL (0x0001) /* Data stored in inode block */
+#define OCFS2_HAS_XATTR_FL (0x0002)
+#define OCFS2_INLINE_XATTR_FL (0x0004)
+#define OCFS2_INDEXED_DIR_FL (0x0008)
+
/* Inode attributes, keep in sync with EXT2 */
#define OCFS2_SECRM_FL (0x00000001) /* Secure deletion */
#define OCFS2_UNRM_FL (0x00000002) /* Undelete */
@@ -447,8 +478,8 @@ struct ocfs2_super_block {
__le32 s_clustersize_bits; /* Clustersize for this fs */
/*40*/ __le16 s_max_slots; /* Max number of simultaneous mounts
before tunefs required */
- __le16 s_reserved1;
- __le32 s_reserved2;
+ __le16 s_tunefs_flag;
+ __le32 s_reserved1;
__le64 s_first_cluster_group; /* Block offset of 1st cluster
* group header */
/*50*/ __u8 s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */
@@ -471,6 +502,19 @@ struct ocfs2_local_alloc
};
/*
+ * Data-in-inode header. This is only used if i_dyn_features has
+ * OCFS2_INLINE_DATA_FL set.
+ */
+struct ocfs2_inline_data
+{
+/*00*/ __le16 id_count; /* Number of bytes that can be used
+ * for data, starting at id_data */
+ __le16 id_reserved0;
+ __le32 id_reserved1;
+ __u8 id_data[0]; /* Start of user data */
+};
+
+/*
* On disk inode for OCFS2
*/
struct ocfs2_dinode {
@@ -502,7 +546,7 @@ struct ocfs2_dinode {
__le32 i_attr;
__le16 i_orphaned_slot; /* Only valid when OCFS2_ORPHANED_FL
was set in i_flags */
- __le16 i_reserved1;
+ __le16 i_dyn_features;
/*70*/ __le64 i_reserved2[8];
/*B8*/ union {
__le64 i_pad1; /* Generic way to refer to this
@@ -528,6 +572,7 @@ struct ocfs2_dinode {
struct ocfs2_chain_list i_chain;
struct ocfs2_extent_list i_list;
struct ocfs2_truncate_log i_dealloc;
+ struct ocfs2_inline_data i_data;
__u8 i_symlink[0];
} id2;
/* Actual on-disk size is one block */
@@ -577,6 +622,12 @@ static inline int ocfs2_fast_symlink_chars(struct super_block *sb)
offsetof(struct ocfs2_dinode, id2.i_symlink);
}
+static inline int ocfs2_max_inline_data(struct super_block *sb)
+{
+ return sb->s_blocksize -
+ offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+}
+
static inline int ocfs2_extent_recs_per_inode(struct super_block *sb)
{
int size;
@@ -656,6 +707,11 @@ static inline int ocfs2_fast_symlink_chars(int blocksize)
return blocksize - offsetof(struct ocfs2_dinode, id2.i_symlink);
}
+static inline int ocfs2_max_inline_data(int blocksize)
+{
+ return blocksize - offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+}
+
static inline int ocfs2_extent_recs_per_inode(int blocksize)
{
int size;
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index c034b5129c1..0e2a1b45bf9 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -39,6 +39,7 @@
#include <linux/parser.h>
#include <linux/crc32.h>
#include <linux/debugfs.h>
+#include <linux/mount.h>
#include <cluster/nodemanager.h>
@@ -91,6 +92,7 @@ struct mount_options
static int ocfs2_parse_options(struct super_block *sb, char *options,
struct mount_options *mopt,
int is_remount);
+static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt);
static void ocfs2_put_super(struct super_block *sb);
static int ocfs2_mount_volume(struct super_block *sb);
static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
@@ -105,7 +107,7 @@ static int ocfs2_sync_fs(struct super_block *sb, int wait);
static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
-static int ocfs2_release_system_inodes(struct ocfs2_super *osb);
+static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
static int ocfs2_fill_local_node_info(struct ocfs2_super *osb);
static int ocfs2_check_volume(struct ocfs2_super *osb);
static int ocfs2_verify_volume(struct ocfs2_dinode *di,
@@ -133,6 +135,7 @@ static const struct super_operations ocfs2_sops = {
.write_super = ocfs2_write_super,
.put_super = ocfs2_put_super,
.remount_fs = ocfs2_remount,
+ .show_options = ocfs2_show_options,
};
enum {
@@ -177,7 +180,7 @@ static void ocfs2_write_super(struct super_block *sb)
static int ocfs2_sync_fs(struct super_block *sb, int wait)
{
- int status = 0;
+ int status;
tid_t target;
struct ocfs2_super *osb = OCFS2_SB(sb);
@@ -275,9 +278,9 @@ bail:
return status;
}
-static int ocfs2_release_system_inodes(struct ocfs2_super *osb)
+static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
{
- int status = 0, i;
+ int i;
struct inode *inode;
mlog_entry_void();
@@ -302,8 +305,7 @@ static int ocfs2_release_system_inodes(struct ocfs2_super *osb)
osb->root_inode = NULL;
}
- mlog_exit(status);
- return status;
+ mlog_exit(0);
}
/* We're allocating fs objects, use GFP_NOFS */
@@ -453,7 +455,7 @@ static int ocfs2_sb_probe(struct super_block *sb,
struct buffer_head **bh,
int *sector_size)
{
- int status = 0, tmpstat;
+ int status, tmpstat;
struct ocfs1_vol_disk_hdr *hdr;
struct ocfs2_dinode *di;
int blksize;
@@ -830,6 +832,41 @@ bail:
return status;
}
+static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
+{
+ struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb);
+ unsigned long opts = osb->s_mount_opt;
+
+ if (opts & OCFS2_MOUNT_HB_LOCAL)
+ seq_printf(s, ",_netdev,heartbeat=local");
+ else
+ seq_printf(s, ",heartbeat=none");
+
+ if (opts & OCFS2_MOUNT_NOINTR)
+ seq_printf(s, ",nointr");
+
+ if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
+ seq_printf(s, ",data=writeback");
+ else
+ seq_printf(s, ",data=ordered");
+
+ if (opts & OCFS2_MOUNT_BARRIER)
+ seq_printf(s, ",barrier=1");
+
+ if (opts & OCFS2_MOUNT_ERRORS_PANIC)
+ seq_printf(s, ",errors=panic");
+ else
+ seq_printf(s, ",errors=remount-ro");
+
+ if (osb->preferred_slot != OCFS2_INVALID_SLOT)
+ seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
+
+ if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM)
+ seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
+
+ return 0;
+}
+
static int __init ocfs2_init(void)
{
int status;
@@ -1209,12 +1246,13 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
tmp = ocfs2_request_umount_vote(osb);
if (tmp < 0)
mlog_errno(tmp);
+ }
- if (osb->slot_num != OCFS2_INVALID_SLOT)
- ocfs2_put_slot(osb);
+ if (osb->slot_num != OCFS2_INVALID_SLOT)
+ ocfs2_put_slot(osb);
+ if (osb->dlm)
ocfs2_super_unlock(osb, 1);
- }
ocfs2_release_system_inodes(osb);
@@ -1275,7 +1313,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
struct buffer_head *bh,
int sector_size)
{
- int status = 0;
+ int status;
int i, cbits, bbits;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
struct inode *inode = NULL;
@@ -1596,7 +1634,7 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
static int ocfs2_check_volume(struct ocfs2_super *osb)
{
- int status = 0;
+ int status;
int dirty;
int local;
struct ocfs2_dinode *local_alloc = NULL; /* only used if we
diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c
index 5df6e35d09b..fd2e846e3e6 100644
--- a/fs/ocfs2/sysfile.c
+++ b/fs/ocfs2/sysfile.c
@@ -100,17 +100,14 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
char namebuf[40];
struct inode *inode = NULL;
u64 blkno;
- struct buffer_head *dirent_bh = NULL;
- struct ocfs2_dir_entry *de = NULL;
int status = 0;
ocfs2_sprintf_system_inode_name(namebuf,
sizeof(namebuf),
type, slot);
- status = ocfs2_find_files_on_disk(namebuf, strlen(namebuf),
- &blkno, osb->sys_root_inode,
- &dirent_bh, &de);
+ status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, namebuf,
+ strlen(namebuf), &blkno);
if (status < 0) {
goto bail;
}
@@ -122,8 +119,7 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
goto bail;
}
bail:
- if (dirent_bh)
- brelse(dirent_bh);
+
return inode;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 16:07:31 +0000