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-rw-r--r--fs/ext2/balloc.c29
-rw-r--r--fs/ext2/dir.c20
-rw-r--r--fs/ext2/ialloc.c12
-rw-r--r--fs/ext2/inode.c15
-rw-r--r--fs/ext2/super.c27
-rw-r--r--fs/ext2/xattr.c15
-rw-r--r--fs/ext2/xip.c53
-rw-r--r--fs/ext2/xip.h9
8 files changed, 85 insertions, 95 deletions
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index e7b2bafa1dd..10bb02c3f25 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -106,7 +106,7 @@ static int ext2_valid_block_bitmap(struct super_block *sb,
return 1;
err_out:
- ext2_error(sb, __FUNCTION__,
+ ext2_error(sb, __func__,
"Invalid block bitmap - "
"block_group = %d, block = %lu",
block_group, bitmap_blk);
@@ -132,7 +132,7 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group)
bitmap_blk = le32_to_cpu(desc->bg_block_bitmap);
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
- ext2_error(sb, __FUNCTION__,
+ ext2_error(sb, __func__,
"Cannot read block bitmap - "
"block_group = %d, block_bitmap = %u",
block_group, le32_to_cpu(desc->bg_block_bitmap));
@@ -143,17 +143,18 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group)
if (bh_submit_read(bh) < 0) {
brelse(bh);
- ext2_error(sb, __FUNCTION__,
+ ext2_error(sb, __func__,
"Cannot read block bitmap - "
"block_group = %d, block_bitmap = %u",
block_group, le32_to_cpu(desc->bg_block_bitmap));
return NULL;
}
- if (!ext2_valid_block_bitmap(sb, desc, block_group, bh)) {
- brelse(bh);
- return NULL;
- }
+ ext2_valid_block_bitmap(sb, desc, block_group, bh);
+ /*
+ * file system mounted not to panic on error, continue with corrupt
+ * bitmap
+ */
return bh;
}
@@ -245,11 +246,10 @@ restart:
prev = rsv;
}
printk("Window map complete.\n");
- if (bad)
- BUG();
+ BUG_ON(bad);
}
#define rsv_window_dump(root, verbose) \
- __rsv_window_dump((root), (verbose), __FUNCTION__)
+ __rsv_window_dump((root), (verbose), __func__)
#else
#define rsv_window_dump(root, verbose) do {} while (0)
#endif
@@ -548,7 +548,7 @@ do_more:
for (i = 0, group_freed = 0; i < count; i++) {
if (!ext2_clear_bit_atomic(sb_bgl_lock(sbi, block_group),
bit + i, bitmap_bh->b_data)) {
- ext2_error(sb, __FUNCTION__,
+ ext2_error(sb, __func__,
"bit already cleared for block %lu", block + i);
} else {
group_freed++;
@@ -1381,7 +1381,12 @@ allocated:
"Allocating block in system zone - "
"blocks from "E2FSBLK", length %lu",
ret_block, num);
- goto out;
+ /*
+ * ext2_try_to_allocate marked the blocks we allocated as in
+ * use. So we may want to selectively mark some of the blocks
+ * as free
+ */
+ goto retry_alloc;
}
performed_allocation = 1;
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 8dededd80fe..a78c6b4af06 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -41,8 +41,8 @@ static inline __le16 ext2_rec_len_to_disk(unsigned len)
{
if (len == (1 << 16))
return cpu_to_le16(EXT2_MAX_REC_LEN);
- else if (len > (1 << 16))
- BUG();
+ else
+ BUG_ON(len > (1 << 16));
return cpu_to_le16(len);
}
@@ -295,11 +295,11 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
struct page *page = ext2_get_page(inode, n);
if (IS_ERR(page)) {
- ext2_error(sb, __FUNCTION__,
+ ext2_error(sb, __func__,
"bad page in #%lu",
inode->i_ino);
filp->f_pos += PAGE_CACHE_SIZE - offset;
- return -EIO;
+ return PTR_ERR(page);
}
kaddr = page_address(page);
if (unlikely(need_revalidate)) {
@@ -314,7 +314,7 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
limit = kaddr + ext2_last_byte(inode, n) - EXT2_DIR_REC_LEN(1);
for ( ;(char*)de <= limit; de = ext2_next_entry(de)) {
if (de->rec_len == 0) {
- ext2_error(sb, __FUNCTION__,
+ ext2_error(sb, __func__,
"zero-length directory entry");
ext2_put_page(page);
return -EIO;
@@ -381,7 +381,7 @@ struct ext2_dir_entry_2 * ext2_find_entry (struct inode * dir,
kaddr += ext2_last_byte(dir, n) - reclen;
while ((char *) de <= kaddr) {
if (de->rec_len == 0) {
- ext2_error(dir->i_sb, __FUNCTION__,
+ ext2_error(dir->i_sb, __func__,
"zero-length directory entry");
ext2_put_page(page);
goto out;
@@ -396,7 +396,7 @@ struct ext2_dir_entry_2 * ext2_find_entry (struct inode * dir,
n = 0;
/* next page is past the blocks we've got */
if (unlikely(n > (dir->i_blocks >> (PAGE_CACHE_SHIFT - 9)))) {
- ext2_error(dir->i_sb, __FUNCTION__,
+ ext2_error(dir->i_sb, __func__,
"dir %lu size %lld exceeds block count %llu",
dir->i_ino, dir->i_size,
(unsigned long long)dir->i_blocks);
@@ -506,7 +506,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
goto got_it;
}
if (de->rec_len == 0) {
- ext2_error(dir->i_sb, __FUNCTION__,
+ ext2_error(dir->i_sb, __func__,
"zero-length directory entry");
err = -EIO;
goto out_unlock;
@@ -578,7 +578,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
while ((char*)de < (char*)dir) {
if (de->rec_len == 0) {
- ext2_error(inode->i_sb, __FUNCTION__,
+ ext2_error(inode->i_sb, __func__,
"zero-length directory entry");
err = -EIO;
goto out;
@@ -670,7 +670,7 @@ int ext2_empty_dir (struct inode * inode)
while ((char *)de <= kaddr) {
if (de->rec_len == 0) {
- ext2_error(inode->i_sb, __FUNCTION__,
+ ext2_error(inode->i_sb, __func__,
"zero-length directory entry");
printk("kaddr=%p, de=%p\n", kaddr, de);
goto not_empty;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 08f647d8188..f5974134676 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -75,11 +75,9 @@ static void ext2_release_inode(struct super_block *sb, int group, int dir)
}
spin_lock(sb_bgl_lock(EXT2_SB(sb), group));
- desc->bg_free_inodes_count =
- cpu_to_le16(le16_to_cpu(desc->bg_free_inodes_count) + 1);
+ le16_add_cpu(&desc->bg_free_inodes_count, 1);
if (dir)
- desc->bg_used_dirs_count =
- cpu_to_le16(le16_to_cpu(desc->bg_used_dirs_count) - 1);
+ le16_add_cpu(&desc->bg_used_dirs_count, -1);
spin_unlock(sb_bgl_lock(EXT2_SB(sb), group));
if (dir)
percpu_counter_dec(&EXT2_SB(sb)->s_dirs_counter);
@@ -539,13 +537,11 @@ got:
percpu_counter_inc(&sbi->s_dirs_counter);
spin_lock(sb_bgl_lock(sbi, group));
- gdp->bg_free_inodes_count =
- cpu_to_le16(le16_to_cpu(gdp->bg_free_inodes_count) - 1);
+ le16_add_cpu(&gdp->bg_free_inodes_count, -1);
if (S_ISDIR(mode)) {
if (sbi->s_debts[group] < 255)
sbi->s_debts[group]++;
- gdp->bg_used_dirs_count =
- cpu_to_le16(le16_to_cpu(gdp->bg_used_dirs_count) + 1);
+ le16_add_cpu(&gdp->bg_used_dirs_count, 1);
} else {
if (sbi->s_debts[group])
sbi->s_debts[group]--;
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index b8a2990bab8..384fc0d1dd7 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -254,13 +254,13 @@ no_block:
* Caller must make sure that @ind is valid and will stay that way.
*/
-static unsigned long ext2_find_near(struct inode *inode, Indirect *ind)
+static ext2_fsblk_t ext2_find_near(struct inode *inode, Indirect *ind)
{
struct ext2_inode_info *ei = EXT2_I(inode);
__le32 *start = ind->bh ? (__le32 *) ind->bh->b_data : ei->i_data;
__le32 *p;
- unsigned long bg_start;
- unsigned long colour;
+ ext2_fsblk_t bg_start;
+ ext2_fsblk_t colour;
/* Try to find previous block */
for (p = ind->p - 1; p >= start; p--)
@@ -275,8 +275,7 @@ static unsigned long ext2_find_near(struct inode *inode, Indirect *ind)
* It is going to be refered from inode itself? OK, just put it into
* the same cylinder group then.
*/
- bg_start = (ei->i_block_group * EXT2_BLOCKS_PER_GROUP(inode->i_sb)) +
- le32_to_cpu(EXT2_SB(inode->i_sb)->s_es->s_first_data_block);
+ bg_start = ext2_group_first_block_no(inode->i_sb, ei->i_block_group);
colour = (current->pid % 16) *
(EXT2_BLOCKS_PER_GROUP(inode->i_sb) / 16);
return bg_start + colour;
@@ -291,8 +290,8 @@ static unsigned long ext2_find_near(struct inode *inode, Indirect *ind)
* Returns preferred place for a block (the goal).
*/
-static inline int ext2_find_goal(struct inode *inode, long block,
- Indirect *partial)
+static inline ext2_fsblk_t ext2_find_goal(struct inode *inode, long block,
+ Indirect *partial)
{
struct ext2_block_alloc_info *block_i;
@@ -796,7 +795,7 @@ const struct address_space_operations ext2_aops = {
const struct address_space_operations ext2_aops_xip = {
.bmap = ext2_bmap,
- .get_xip_page = ext2_get_xip_page,
+ .get_xip_mem = ext2_get_xip_mem,
};
const struct address_space_operations ext2_nobh_aops = {
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 088b011bb97..ef50cbc792d 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -51,8 +51,7 @@ void ext2_error (struct super_block * sb, const char * function,
if (!(sb->s_flags & MS_RDONLY)) {
sbi->s_mount_state |= EXT2_ERROR_FS;
- es->s_state =
- cpu_to_le16(le16_to_cpu(es->s_state) | EXT2_ERROR_FS);
+ es->s_state |= cpu_to_le16(EXT2_ERROR_FS);
ext2_sync_super(sb, es);
}
@@ -90,7 +89,7 @@ void ext2_update_dynamic_rev(struct super_block *sb)
if (le32_to_cpu(es->s_rev_level) > EXT2_GOOD_OLD_REV)
return;
- ext2_warning(sb, __FUNCTION__,
+ ext2_warning(sb, __func__,
"updating to rev %d because of new feature flag, "
"running e2fsck is recommended",
EXT2_DYNAMIC_REV);
@@ -604,7 +603,7 @@ static int ext2_setup_super (struct super_block * sb,
"running e2fsck is recommended\n");
if (!le16_to_cpu(es->s_max_mnt_count))
es->s_max_mnt_count = cpu_to_le16(EXT2_DFL_MAX_MNT_COUNT);
- es->s_mnt_count=cpu_to_le16(le16_to_cpu(es->s_mnt_count) + 1);
+ le16_add_cpu(&es->s_mnt_count, 1);
ext2_write_super(sb);
if (test_opt (sb, DEBUG))
printk ("[EXT II FS %s, %s, bs=%lu, fs=%lu, gc=%lu, "
@@ -622,13 +621,13 @@ static int ext2_check_descriptors(struct super_block *sb)
{
int i;
struct ext2_sb_info *sbi = EXT2_SB(sb);
- unsigned long first_block = le32_to_cpu(sbi->s_es->s_first_data_block);
- unsigned long last_block;
ext2_debug ("Checking group descriptors");
for (i = 0; i < sbi->s_groups_count; i++) {
struct ext2_group_desc *gdp = ext2_get_group_desc(sb, i, NULL);
+ ext2_fsblk_t first_block = ext2_group_first_block_no(sb, i);
+ ext2_fsblk_t last_block;
if (i == sbi->s_groups_count - 1)
last_block = le32_to_cpu(sbi->s_es->s_blocks_count) - 1;
@@ -664,7 +663,6 @@ static int ext2_check_descriptors(struct super_block *sb)
i, (unsigned long) le32_to_cpu(gdp->bg_inode_table));
return 0;
}
- first_block += EXT2_BLOCKS_PER_GROUP(sb);
}
return 1;
}
@@ -721,10 +719,9 @@ static unsigned long descriptor_loc(struct super_block *sb,
int nr)
{
struct ext2_sb_info *sbi = EXT2_SB(sb);
- unsigned long bg, first_data_block, first_meta_bg;
+ unsigned long bg, first_meta_bg;
int has_super = 0;
- first_data_block = le32_to_cpu(sbi->s_es->s_first_data_block);
first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg);
if (!EXT2_HAS_INCOMPAT_FEATURE(sb, EXT2_FEATURE_INCOMPAT_META_BG) ||
@@ -733,7 +730,8 @@ static unsigned long descriptor_loc(struct super_block *sb,
bg = sbi->s_desc_per_block * nr;
if (ext2_bg_has_super(sb, bg))
has_super = 1;
- return (first_data_block + has_super + (bg * sbi->s_blocks_per_group));
+
+ return ext2_group_first_block_no(sb, bg) + has_super;
}
static int ext2_fill_super(struct super_block *sb, void *data, int silent)
@@ -1062,7 +1060,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount3;
}
if (EXT2_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- ext2_warning(sb, __FUNCTION__,
+ ext2_warning(sb, __func__,
"mounting ext3 filesystem as ext2");
ext2_setup_super (sb, es, sb->s_flags & MS_RDONLY);
return 0;
@@ -1126,10 +1124,9 @@ void ext2_write_super (struct super_block * sb)
if (!(sb->s_flags & MS_RDONLY)) {
es = EXT2_SB(sb)->s_es;
- if (le16_to_cpu(es->s_state) & EXT2_VALID_FS) {
+ if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug ("setting valid to 0\n");
- es->s_state = cpu_to_le16(le16_to_cpu(es->s_state) &
- ~EXT2_VALID_FS);
+ es->s_state &= cpu_to_le16(~EXT2_VALID_FS);
es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
es->s_mtime = cpu_to_le32(get_seconds());
@@ -1180,7 +1177,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
if (((sbi->s_mount_opt & EXT2_MOUNT_XIP) !=
(old_mount_opt & EXT2_MOUNT_XIP)) &&
invalidate_inodes(sb))
- ext2_warning(sb, __FUNCTION__, "busy inodes while remounting "\
+ ext2_warning(sb, __func__, "busy inodes while remounting "\
"xip remain in cache (no functional problem)");
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index a99d46f3b26..987a5261cc2 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -646,8 +646,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
unlock_buffer(new_bh);
goto cleanup;
}
- HDR(new_bh)->h_refcount = cpu_to_le32(1 +
- le32_to_cpu(HDR(new_bh)->h_refcount));
+ le32_add_cpu(&HDR(new_bh)->h_refcount, 1);
ea_bdebug(new_bh, "refcount now=%d",
le32_to_cpu(HDR(new_bh)->h_refcount));
}
@@ -660,10 +659,8 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
ext2_xattr_cache_insert(new_bh);
} else {
/* We need to allocate a new block */
- int goal = le32_to_cpu(EXT2_SB(sb)->s_es->
- s_first_data_block) +
- EXT2_I(inode)->i_block_group *
- EXT2_BLOCKS_PER_GROUP(sb);
+ ext2_fsblk_t goal = ext2_group_first_block_no(sb,
+ EXT2_I(inode)->i_block_group);
int block = ext2_new_block(inode, goal, &error);
if (error)
goto cleanup;
@@ -731,8 +728,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
bforget(old_bh);
} else {
/* Decrement the refcount only. */
- HDR(old_bh)->h_refcount = cpu_to_le32(
- le32_to_cpu(HDR(old_bh)->h_refcount) - 1);
+ le32_add_cpu(&HDR(old_bh)->h_refcount, -1);
if (ce)
mb_cache_entry_release(ce);
DQUOT_FREE_BLOCK(inode, 1);
@@ -789,8 +785,7 @@ ext2_xattr_delete_inode(struct inode *inode)
bforget(bh);
unlock_buffer(bh);
} else {
- HDR(bh)->h_refcount = cpu_to_le32(
- le32_to_cpu(HDR(bh)->h_refcount) - 1);
+ le32_add_cpu(&HDR(bh)->h_refcount, -1);
if (ce)
mb_cache_entry_release(ce);
ea_bdebug(bh, "refcount now=%d",
diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c
index ca7f0031238..4fb94c20041 100644
--- a/fs/ext2/xip.c
+++ b/fs/ext2/xip.c
@@ -15,24 +15,28 @@
#include "xip.h"
static inline int
-__inode_direct_access(struct inode *inode, sector_t sector,
- unsigned long *data)
+__inode_direct_access(struct inode *inode, sector_t block,
+ void **kaddr, unsigned long *pfn)
{
- BUG_ON(!inode->i_sb->s_bdev->bd_disk->fops->direct_access);
- return inode->i_sb->s_bdev->bd_disk->fops
- ->direct_access(inode->i_sb->s_bdev,sector,data);
+ struct block_device *bdev = inode->i_sb->s_bdev;
+ struct block_device_operations *ops = bdev->bd_disk->fops;
+ sector_t sector;
+
+ sector = block * (PAGE_SIZE / 512); /* ext2 block to bdev sector */
+
+ BUG_ON(!ops->direct_access);
+ return ops->direct_access(bdev, sector, kaddr, pfn);
}
static inline int
-__ext2_get_sector(struct inode *inode, sector_t offset, int create,
+__ext2_get_block(struct inode *inode, pgoff_t pgoff, int create,
sector_t *result)
{
struct buffer_head tmp;
int rc;
memset(&tmp, 0, sizeof(struct buffer_head));
- rc = ext2_get_block(inode, offset/ (PAGE_SIZE/512), &tmp,
- create);
+ rc = ext2_get_block(inode, pgoff, &tmp, create);
*result = tmp.b_blocknr;
/* did we get a sparse block (hole in the file)? */
@@ -45,15 +49,15 @@ __ext2_get_sector(struct inode *inode, sector_t offset, int create,
}
int
-ext2_clear_xip_target(struct inode *inode, int block)
+ext2_clear_xip_target(struct inode *inode, sector_t block)
{
- sector_t sector = block * (PAGE_SIZE/512);
- unsigned long data;
+ void *kaddr;
+ unsigned long pfn;
int rc;
- rc = __inode_direct_access(inode, sector, &data);
+ rc = __inode_direct_access(inode, block, &kaddr, &pfn);
if (!rc)
- clear_page((void*)data);
+ clear_page(kaddr);
return rc;
}
@@ -64,30 +68,23 @@ void ext2_xip_verify_sb(struct super_block *sb)
if ((sbi->s_mount_opt & EXT2_MOUNT_XIP) &&
!sb->s_bdev->bd_disk->fops->direct_access) {
sbi->s_mount_opt &= (~EXT2_MOUNT_XIP);
- ext2_warning(sb, __FUNCTION__,
+ ext2_warning(sb, __func__,
"ignoring xip option - not supported by bdev");
}
}
-struct page *
-ext2_get_xip_page(struct address_space *mapping, sector_t offset,
- int create)
+int ext2_get_xip_mem(struct address_space *mapping, pgoff_t pgoff, int create,
+ void **kmem, unsigned long *pfn)
{
int rc;
- unsigned long data;
- sector_t sector;
+ sector_t block;
/* first, retrieve the sector number */
- rc = __ext2_get_sector(mapping->host, offset, create, &sector);
+ rc = __ext2_get_block(mapping->host, pgoff, create, &block);
if (rc)
- goto error;
+ return rc;
/* retrieve address of the target data */
- rc = __inode_direct_access
- (mapping->host, sector * (PAGE_SIZE/512), &data);
- if (!rc)
- return virt_to_page(data);
-
- error:
- return ERR_PTR(rc);
+ rc = __inode_direct_access(mapping->host, block, kmem, pfn);
+ return rc;
}
diff --git a/fs/ext2/xip.h b/fs/ext2/xip.h
index aa85331d6c5..18b34d2f31b 100644
--- a/fs/ext2/xip.h
+++ b/fs/ext2/xip.h
@@ -7,19 +7,20 @@
#ifdef CONFIG_EXT2_FS_XIP
extern void ext2_xip_verify_sb (struct super_block *);
-extern int ext2_clear_xip_target (struct inode *, int);
+extern int ext2_clear_xip_target (struct inode *, sector_t);
static inline int ext2_use_xip (struct super_block *sb)
{
struct ext2_sb_info *sbi = EXT2_SB(sb);
return (sbi->s_mount_opt & EXT2_MOUNT_XIP);
}
-struct page* ext2_get_xip_page (struct address_space *, sector_t, int);
-#define mapping_is_xip(map) unlikely(map->a_ops->get_xip_page)
+int ext2_get_xip_mem(struct address_space *, pgoff_t, int,
+ void **, unsigned long *);
+#define mapping_is_xip(map) unlikely(map->a_ops->get_xip_mem)
#else
#define mapping_is_xip(map) 0
#define ext2_xip_verify_sb(sb) do { } while (0)
#define ext2_use_xip(sb) 0
#define ext2_clear_xip_target(inode, chain) 0
-#define ext2_get_xip_page NULL
+#define ext2_get_xip_mem NULL
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 02:55:10 +0000