summaryrefslogtreecommitdiffstats
path: root/fs/ocfs2/refcounttree.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ocfs2/refcounttree.c')
-rw-r--r--fs/ocfs2/refcounttree.c221
1 files changed, 182 insertions, 39 deletions
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 60287fc56bc..74db2be75dd 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -276,7 +276,7 @@ static void ocfs2_erase_refcount_tree_from_list(struct ocfs2_super *osb,
spin_unlock(&osb->osb_lock);
}
-void ocfs2_kref_remove_refcount_tree(struct kref *kref)
+static void ocfs2_kref_remove_refcount_tree(struct kref *kref)
{
struct ocfs2_refcount_tree *tree =
container_of(kref, struct ocfs2_refcount_tree, rf_getcnt);
@@ -524,23 +524,6 @@ out:
return ret;
}
-int ocfs2_lock_refcount_tree_by_inode(struct inode *inode, int rw,
- struct ocfs2_refcount_tree **ret_tree,
- struct buffer_head **ref_bh)
-{
- int ret;
- u64 ref_blkno;
-
- ret = ocfs2_get_refcount_block(inode, &ref_blkno);
- if (ret) {
- mlog_errno(ret);
- return ret;
- }
-
- return ocfs2_lock_refcount_tree(OCFS2_SB(inode->i_sb), ref_blkno,
- rw, ret_tree, ref_bh);
-}
-
void ocfs2_unlock_refcount_tree(struct ocfs2_super *osb,
struct ocfs2_refcount_tree *tree, int rw)
{
@@ -969,6 +952,103 @@ out:
}
/*
+ * Find the end range for a leaf refcount block indicated by
+ * el->l_recs[index].e_blkno.
+ */
+static int ocfs2_get_refcount_cpos_end(struct ocfs2_caching_info *ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_extent_block *eb,
+ struct ocfs2_extent_list *el,
+ int index, u32 *cpos_end)
+{
+ int ret, i, subtree_root;
+ u32 cpos;
+ u64 blkno;
+ struct super_block *sb = ocfs2_metadata_cache_get_super(ci);
+ struct ocfs2_path *left_path = NULL, *right_path = NULL;
+ struct ocfs2_extent_tree et;
+ struct ocfs2_extent_list *tmp_el;
+
+ if (index < le16_to_cpu(el->l_next_free_rec) - 1) {
+ /*
+ * We have a extent rec after index, so just use the e_cpos
+ * of the next extent rec.
+ */
+ *cpos_end = le32_to_cpu(el->l_recs[index+1].e_cpos);
+ return 0;
+ }
+
+ if (!eb || (eb && !eb->h_next_leaf_blk)) {
+ /*
+ * We are the last extent rec, so any high cpos should
+ * be stored in this leaf refcount block.
+ */
+ *cpos_end = UINT_MAX;
+ return 0;
+ }
+
+ /*
+ * If the extent block isn't the last one, we have to find
+ * the subtree root between this extent block and the next
+ * leaf extent block and get the corresponding e_cpos from
+ * the subroot. Otherwise we may corrupt the b-tree.
+ */
+ ocfs2_init_refcount_extent_tree(&et, ci, ref_root_bh);
+
+ left_path = ocfs2_new_path_from_et(&et);
+ if (!left_path) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ cpos = le32_to_cpu(eb->h_list.l_recs[index].e_cpos);
+ ret = ocfs2_find_path(ci, left_path, cpos);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ right_path = ocfs2_new_path_from_path(left_path);
+ if (!right_path) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_find_cpos_for_right_leaf(sb, left_path, &cpos);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_find_path(ci, right_path, cpos);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ subtree_root = ocfs2_find_subtree_root(&et, left_path,
+ right_path);
+
+ tmp_el = left_path->p_node[subtree_root].el;
+ blkno = left_path->p_node[subtree_root+1].bh->b_blocknr;
+ for (i = 0; i < le32_to_cpu(tmp_el->l_next_free_rec); i++) {
+ if (le64_to_cpu(tmp_el->l_recs[i].e_blkno) == blkno) {
+ *cpos_end = le32_to_cpu(tmp_el->l_recs[i+1].e_cpos);
+ break;
+ }
+ }
+
+ BUG_ON(i == le32_to_cpu(tmp_el->l_next_free_rec));
+
+out:
+ ocfs2_free_path(left_path);
+ ocfs2_free_path(right_path);
+ return ret;
+}
+
+/*
* Given a cpos and len, try to find the refcount record which contains cpos.
* 1. If cpos can be found in one refcount record, return the record.
* 2. If cpos can't be found, return a fake record which start from cpos
@@ -983,10 +1063,10 @@ static int ocfs2_get_refcount_rec(struct ocfs2_caching_info *ci,
struct buffer_head **ret_bh)
{
int ret = 0, i, found;
- u32 low_cpos;
+ u32 low_cpos, uninitialized_var(cpos_end);
struct ocfs2_extent_list *el;
- struct ocfs2_extent_rec *tmp, *rec = NULL;
- struct ocfs2_extent_block *eb;
+ struct ocfs2_extent_rec *rec = NULL;
+ struct ocfs2_extent_block *eb = NULL;
struct buffer_head *eb_bh = NULL, *ref_leaf_bh = NULL;
struct super_block *sb = ocfs2_metadata_cache_get_super(ci);
struct ocfs2_refcount_block *rb =
@@ -1034,12 +1114,16 @@ static int ocfs2_get_refcount_rec(struct ocfs2_caching_info *ci,
}
}
- /* adjust len when we have ocfs2_extent_rec after it. */
- if (found && i < le16_to_cpu(el->l_next_free_rec) - 1) {
- tmp = &el->l_recs[i+1];
+ if (found) {
+ ret = ocfs2_get_refcount_cpos_end(ci, ref_root_bh,
+ eb, el, i, &cpos_end);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
- if (le32_to_cpu(tmp->e_cpos) < cpos + len)
- len = le32_to_cpu(tmp->e_cpos) - cpos;
+ if (cpos_end < low_cpos + len)
+ len = cpos_end - low_cpos;
}
ret = ocfs2_read_refcount_block(ci, le64_to_cpu(rec->e_blkno),
@@ -1418,7 +1502,7 @@ static int ocfs2_divide_leaf_refcount_block(struct buffer_head *ref_leaf_bh,
/* change old and new rl_used accordingly. */
le16_add_cpu(&rl->rl_used, -num_moved);
- new_rl->rl_used = cpu_to_le32(num_moved);
+ new_rl->rl_used = cpu_to_le16(num_moved);
sort(&rl->rl_recs, le16_to_cpu(rl->rl_used),
sizeof(struct ocfs2_refcount_rec),
@@ -1797,7 +1881,8 @@ static int ocfs2_split_refcount_rec(handle_t *handle,
recs_need++;
/* If the leaf block don't have enough record, expand it. */
- if (le16_to_cpu(rf_list->rl_used) + recs_need > rf_list->rl_count) {
+ if (le16_to_cpu(rf_list->rl_used) + recs_need >
+ le16_to_cpu(rf_list->rl_count)) {
struct ocfs2_refcount_rec tmp_rec;
u64 cpos = le64_to_cpu(orig_rec->r_cpos);
len = le32_to_cpu(orig_rec->r_clusters);
@@ -1859,7 +1944,7 @@ static int ocfs2_split_refcount_rec(handle_t *handle,
memcpy(tail_rec, orig_rec, sizeof(struct ocfs2_refcount_rec));
le64_add_cpu(&tail_rec->r_cpos,
le32_to_cpu(tail_rec->r_clusters) - len);
- tail_rec->r_clusters = le32_to_cpu(len);
+ tail_rec->r_clusters = cpu_to_le32(len);
}
/*
@@ -2431,7 +2516,7 @@ out:
* we gonna touch and whether we need to create new blocks.
*
* Normally the refcount blocks store these refcount should be
- * continguous also, so that we can get the number easily.
+ * contiguous also, so that we can get the number easily.
* As for meta_ac, we will at most add split 2 refcount record and
* 2 more refcount block, so just check it in a rough way.
*
@@ -3743,6 +3828,9 @@ static int ocfs2_attach_refcount_tree(struct inode *inode,
goto out;
}
+ if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ goto attach_xattr;
+
ocfs2_init_dinode_extent_tree(&di_et, INODE_CACHE(inode), di_bh);
size = i_size_read(inode);
@@ -3769,6 +3857,7 @@ static int ocfs2_attach_refcount_tree(struct inode *inode,
cpos += num_clusters;
}
+attach_xattr:
if (oi->ip_dyn_features & OCFS2_HAS_XATTR_FL) {
ret = ocfs2_xattr_attach_refcount_tree(inode, di_bh,
&ref_tree->rf_ci,
@@ -3836,8 +3925,7 @@ static int ocfs2_add_refcounted_extent(struct inode *inode,
}
ret = ocfs2_insert_extent(handle, et, cpos,
- cpu_to_le64(ocfs2_clusters_to_blocks(inode->i_sb,
- p_cluster)),
+ ocfs2_clusters_to_blocks(inode->i_sb, p_cluster),
num_clusters, ext_flags, meta_ac);
if (ret) {
mlog_errno(ret);
@@ -3858,6 +3946,49 @@ out:
return ret;
}
+static int ocfs2_duplicate_inline_data(struct inode *s_inode,
+ struct buffer_head *s_bh,
+ struct inode *t_inode,
+ struct buffer_head *t_bh)
+{
+ int ret;
+ handle_t *handle;
+ struct ocfs2_super *osb = OCFS2_SB(s_inode->i_sb);
+ struct ocfs2_dinode *s_di = (struct ocfs2_dinode *)s_bh->b_data;
+ struct ocfs2_dinode *t_di = (struct ocfs2_dinode *)t_bh->b_data;
+
+ BUG_ON(!(OCFS2_I(s_inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL));
+
+ 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_di(handle, INODE_CACHE(t_inode), t_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ t_di->id2.i_data.id_count = s_di->id2.i_data.id_count;
+ memcpy(t_di->id2.i_data.id_data, s_di->id2.i_data.id_data,
+ le16_to_cpu(s_di->id2.i_data.id_count));
+ spin_lock(&OCFS2_I(t_inode)->ip_lock);
+ OCFS2_I(t_inode)->ip_dyn_features |= OCFS2_INLINE_DATA_FL;
+ t_di->i_dyn_features = cpu_to_le16(OCFS2_I(t_inode)->ip_dyn_features);
+ spin_unlock(&OCFS2_I(t_inode)->ip_lock);
+
+ ocfs2_journal_dirty(handle, t_bh);
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+out:
+ return ret;
+}
+
static int ocfs2_duplicate_extent_list(struct inode *s_inode,
struct inode *t_inode,
struct buffer_head *t_bh,
@@ -3997,6 +4128,14 @@ static int ocfs2_create_reflink_node(struct inode *s_inode,
goto out;
}
+ if (OCFS2_I(s_inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ret = ocfs2_duplicate_inline_data(s_inode, s_bh,
+ t_inode, t_bh);
+ if (ret)
+ mlog_errno(ret);
+ goto out;
+ }
+
ret = ocfs2_lock_refcount_tree(osb, le64_to_cpu(di->i_refcount_loc),
1, &ref_tree, &ref_root_bh);
if (ret) {
@@ -4013,10 +4152,6 @@ static int ocfs2_create_reflink_node(struct inode *s_inode,
goto out_unlock_refcount;
}
- ret = ocfs2_complete_reflink(s_inode, s_bh, t_inode, t_bh, preserve);
- if (ret)
- mlog_errno(ret);
-
out_unlock_refcount:
ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
brelse(ref_root_bh);
@@ -4068,9 +4203,17 @@ static int __ocfs2_reflink(struct dentry *old_dentry,
ret = ocfs2_reflink_xattrs(inode, old_bh,
new_inode, new_bh,
preserve);
- if (ret)
+ if (ret) {
mlog_errno(ret);
+ goto inode_unlock;
+ }
}
+
+ ret = ocfs2_complete_reflink(inode, old_bh,
+ new_inode, new_bh, preserve);
+ if (ret)
+ mlog_errno(ret);
+
inode_unlock:
ocfs2_inode_unlock(new_inode, 1);
brelse(new_bh);
@@ -4194,8 +4337,8 @@ static int ocfs2_user_path_parent(const char __user *path,
* @new_dentry: target dentry
* @preserve: if true, preserve all file attributes
*/
-int ocfs2_vfs_reflink(struct dentry *old_dentry, struct inode *dir,
- struct dentry *new_dentry, bool preserve)
+static int ocfs2_vfs_reflink(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *new_dentry, bool preserve)
{
struct inode *inode = old_dentry->d_inode;
int error;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-05-31 00:03:18 +0000