mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
ext4: add ext4_sb_bread() to disambiguate ENOMEM cases
Today, when sb_bread() returns NULL, this can either be because of an
I/O error or because the system failed to allocate the buffer. Since
it's an old interface, changing would require changing many call
sites.
So instead we create our own ext4_sb_bread(), which also allows us to
set the REQ_META flag.
Also fixed a problem in the xattr code where a NULL return in a
function could also mean that the xattr was not found, which could
lead to the wrong error getting returned to userspace.
Fixes: ac27a0ec11 ("ext4: initial copy of files from ext3")
Cc: stable@kernel.org # 2.6.19
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o
parent
2e6e902d18
commit
fb265c9cb4
5 changed files with 115 additions and 94 deletions
|
|
@ -2538,6 +2538,8 @@ extern int ext4_group_extend(struct super_block *sb,
|
|||
extern int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count);
|
||||
|
||||
/* super.c */
|
||||
extern struct buffer_head *ext4_sb_bread(struct super_block *sb,
|
||||
sector_t block, int op_flags);
|
||||
extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
|
||||
extern int ext4_calculate_overhead(struct super_block *sb);
|
||||
extern void ext4_superblock_csum_set(struct super_block *sb);
|
||||
|
|
|
|||
|
|
@ -116,9 +116,9 @@ static int update_ind_extent_range(handle_t *handle, struct inode *inode,
|
|||
int i, retval = 0;
|
||||
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
|
||||
|
||||
bh = sb_bread(inode->i_sb, pblock);
|
||||
if (!bh)
|
||||
return -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, pblock, 0);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
|
||||
i_data = (__le32 *)bh->b_data;
|
||||
for (i = 0; i < max_entries; i++) {
|
||||
|
|
@ -145,9 +145,9 @@ static int update_dind_extent_range(handle_t *handle, struct inode *inode,
|
|||
int i, retval = 0;
|
||||
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
|
||||
|
||||
bh = sb_bread(inode->i_sb, pblock);
|
||||
if (!bh)
|
||||
return -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, pblock, 0);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
|
||||
i_data = (__le32 *)bh->b_data;
|
||||
for (i = 0; i < max_entries; i++) {
|
||||
|
|
@ -175,9 +175,9 @@ static int update_tind_extent_range(handle_t *handle, struct inode *inode,
|
|||
int i, retval = 0;
|
||||
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
|
||||
|
||||
bh = sb_bread(inode->i_sb, pblock);
|
||||
if (!bh)
|
||||
return -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, pblock, 0);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
|
||||
i_data = (__le32 *)bh->b_data;
|
||||
for (i = 0; i < max_entries; i++) {
|
||||
|
|
@ -224,9 +224,9 @@ static int free_dind_blocks(handle_t *handle,
|
|||
struct buffer_head *bh;
|
||||
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
|
||||
|
||||
bh = sb_bread(inode->i_sb, le32_to_cpu(i_data));
|
||||
if (!bh)
|
||||
return -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, le32_to_cpu(i_data), 0);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
|
||||
tmp_idata = (__le32 *)bh->b_data;
|
||||
for (i = 0; i < max_entries; i++) {
|
||||
|
|
@ -254,9 +254,9 @@ static int free_tind_blocks(handle_t *handle,
|
|||
struct buffer_head *bh;
|
||||
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
|
||||
|
||||
bh = sb_bread(inode->i_sb, le32_to_cpu(i_data));
|
||||
if (!bh)
|
||||
return -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, le32_to_cpu(i_data), 0);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
|
||||
tmp_idata = (__le32 *)bh->b_data;
|
||||
for (i = 0; i < max_entries; i++) {
|
||||
|
|
@ -382,9 +382,9 @@ static int free_ext_idx(handle_t *handle, struct inode *inode,
|
|||
struct ext4_extent_header *eh;
|
||||
|
||||
block = ext4_idx_pblock(ix);
|
||||
bh = sb_bread(inode->i_sb, block);
|
||||
if (!bh)
|
||||
return -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, block, 0);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
|
||||
eh = (struct ext4_extent_header *)bh->b_data;
|
||||
if (eh->eh_depth != 0) {
|
||||
|
|
|
|||
|
|
@ -127,10 +127,12 @@ static int verify_group_input(struct super_block *sb,
|
|||
else if (free_blocks_count < 0)
|
||||
ext4_warning(sb, "Bad blocks count %u",
|
||||
input->blocks_count);
|
||||
else if (!(bh = sb_bread(sb, end - 1)))
|
||||
else if (IS_ERR(bh = ext4_sb_bread(sb, end - 1, 0))) {
|
||||
err = PTR_ERR(bh);
|
||||
bh = NULL;
|
||||
ext4_warning(sb, "Cannot read last block (%llu)",
|
||||
end - 1);
|
||||
else if (outside(input->block_bitmap, start, end))
|
||||
} else if (outside(input->block_bitmap, start, end))
|
||||
ext4_warning(sb, "Block bitmap not in group (block %llu)",
|
||||
(unsigned long long)input->block_bitmap);
|
||||
else if (outside(input->inode_bitmap, start, end))
|
||||
|
|
@ -781,11 +783,11 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
|
||||
unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb);
|
||||
ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num;
|
||||
struct buffer_head **o_group_desc, **n_group_desc;
|
||||
struct buffer_head *dind;
|
||||
struct buffer_head *gdb_bh;
|
||||
struct buffer_head **o_group_desc, **n_group_desc = NULL;
|
||||
struct buffer_head *dind = NULL;
|
||||
struct buffer_head *gdb_bh = NULL;
|
||||
int gdbackups;
|
||||
struct ext4_iloc iloc;
|
||||
struct ext4_iloc iloc = { .bh = NULL };
|
||||
__le32 *data;
|
||||
int err;
|
||||
|
||||
|
|
@ -794,21 +796,22 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
"EXT4-fs: ext4_add_new_gdb: adding group block %lu\n",
|
||||
gdb_num);
|
||||
|
||||
gdb_bh = sb_bread(sb, gdblock);
|
||||
if (!gdb_bh)
|
||||
return -EIO;
|
||||
gdb_bh = ext4_sb_bread(sb, gdblock, 0);
|
||||
if (IS_ERR(gdb_bh))
|
||||
return PTR_ERR(gdb_bh);
|
||||
|
||||
gdbackups = verify_reserved_gdb(sb, group, gdb_bh);
|
||||
if (gdbackups < 0) {
|
||||
err = gdbackups;
|
||||
goto exit_bh;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
data = EXT4_I(inode)->i_data + EXT4_DIND_BLOCK;
|
||||
dind = sb_bread(sb, le32_to_cpu(*data));
|
||||
if (!dind) {
|
||||
err = -EIO;
|
||||
goto exit_bh;
|
||||
dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0);
|
||||
if (IS_ERR(dind)) {
|
||||
err = PTR_ERR(dind);
|
||||
dind = NULL;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
data = (__le32 *)dind->b_data;
|
||||
|
|
@ -816,18 +819,18 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
ext4_warning(sb, "new group %u GDT block %llu not reserved",
|
||||
group, gdblock);
|
||||
err = -EINVAL;
|
||||
goto exit_dind;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
|
||||
err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
|
||||
if (unlikely(err))
|
||||
goto exit_dind;
|
||||
goto errout;
|
||||
|
||||
BUFFER_TRACE(gdb_bh, "get_write_access");
|
||||
err = ext4_journal_get_write_access(handle, gdb_bh);
|
||||
if (unlikely(err))
|
||||
goto exit_dind;
|
||||
goto errout;
|
||||
|
||||
BUFFER_TRACE(dind, "get_write_access");
|
||||
err = ext4_journal_get_write_access(handle, dind);
|
||||
|
|
@ -837,7 +840,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
/* ext4_reserve_inode_write() gets a reference on the iloc */
|
||||
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
||||
if (unlikely(err))
|
||||
goto exit_dind;
|
||||
goto errout;
|
||||
|
||||
n_group_desc = ext4_kvmalloc((gdb_num + 1) *
|
||||
sizeof(struct buffer_head *),
|
||||
|
|
@ -846,7 +849,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
err = -ENOMEM;
|
||||
ext4_warning(sb, "not enough memory for %lu groups",
|
||||
gdb_num + 1);
|
||||
goto exit_inode;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -862,7 +865,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
err = ext4_handle_dirty_metadata(handle, NULL, dind);
|
||||
if (unlikely(err)) {
|
||||
ext4_std_error(sb, err);
|
||||
goto exit_inode;
|
||||
goto errout;
|
||||
}
|
||||
inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >>
|
||||
(9 - EXT4_SB(sb)->s_cluster_bits);
|
||||
|
|
@ -871,8 +874,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
err = ext4_handle_dirty_metadata(handle, NULL, gdb_bh);
|
||||
if (unlikely(err)) {
|
||||
ext4_std_error(sb, err);
|
||||
iloc.bh = NULL;
|
||||
goto exit_inode;
|
||||
goto errout;
|
||||
}
|
||||
brelse(dind);
|
||||
|
||||
|
|
@ -888,15 +890,11 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
|
|||
err = ext4_handle_dirty_super(handle, sb);
|
||||
if (err)
|
||||
ext4_std_error(sb, err);
|
||||
|
||||
return err;
|
||||
|
||||
exit_inode:
|
||||
errout:
|
||||
kvfree(n_group_desc);
|
||||
brelse(iloc.bh);
|
||||
exit_dind:
|
||||
brelse(dind);
|
||||
exit_bh:
|
||||
brelse(gdb_bh);
|
||||
|
||||
ext4_debug("leaving with error %d\n", err);
|
||||
|
|
@ -916,9 +914,9 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
|
|||
|
||||
gdblock = ext4_meta_bg_first_block_no(sb, group) +
|
||||
ext4_bg_has_super(sb, group);
|
||||
gdb_bh = sb_bread(sb, gdblock);
|
||||
if (!gdb_bh)
|
||||
return -EIO;
|
||||
gdb_bh = ext4_sb_bread(sb, gdblock, 0);
|
||||
if (IS_ERR(gdb_bh))
|
||||
return PTR_ERR(gdb_bh);
|
||||
n_group_desc = ext4_kvmalloc((gdb_num + 1) *
|
||||
sizeof(struct buffer_head *),
|
||||
GFP_NOFS);
|
||||
|
|
@ -975,9 +973,10 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
|
|||
return -ENOMEM;
|
||||
|
||||
data = EXT4_I(inode)->i_data + EXT4_DIND_BLOCK;
|
||||
dind = sb_bread(sb, le32_to_cpu(*data));
|
||||
if (!dind) {
|
||||
err = -EIO;
|
||||
dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0);
|
||||
if (IS_ERR(dind)) {
|
||||
err = PTR_ERR(dind);
|
||||
dind = NULL;
|
||||
goto exit_free;
|
||||
}
|
||||
|
||||
|
|
@ -996,9 +995,10 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
|
|||
err = -EINVAL;
|
||||
goto exit_bh;
|
||||
}
|
||||
primary[res] = sb_bread(sb, blk);
|
||||
if (!primary[res]) {
|
||||
err = -EIO;
|
||||
primary[res] = ext4_sb_bread(sb, blk, 0);
|
||||
if (IS_ERR(primary[res])) {
|
||||
err = PTR_ERR(primary[res]);
|
||||
primary[res] = NULL;
|
||||
goto exit_bh;
|
||||
}
|
||||
gdbackups = verify_reserved_gdb(sb, group, primary[res]);
|
||||
|
|
|
|||
|
|
@ -140,6 +140,29 @@ MODULE_ALIAS_FS("ext3");
|
|||
MODULE_ALIAS("ext3");
|
||||
#define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type)
|
||||
|
||||
/*
|
||||
* This works like sb_bread() except it uses ERR_PTR for error
|
||||
* returns. Currently with sb_bread it's impossible to distinguish
|
||||
* between ENOMEM and EIO situations (since both result in a NULL
|
||||
* return.
|
||||
*/
|
||||
struct buffer_head *
|
||||
ext4_sb_bread(struct super_block *sb, sector_t block, int op_flags)
|
||||
{
|
||||
struct buffer_head *bh = sb_getblk(sb, block);
|
||||
|
||||
if (bh == NULL)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
if (buffer_uptodate(bh))
|
||||
return bh;
|
||||
ll_rw_block(REQ_OP_READ, REQ_META | op_flags, 1, &bh);
|
||||
wait_on_buffer(bh);
|
||||
if (buffer_uptodate(bh))
|
||||
return bh;
|
||||
put_bh(bh);
|
||||
return ERR_PTR(-EIO);
|
||||
}
|
||||
|
||||
static int ext4_verify_csum_type(struct super_block *sb,
|
||||
struct ext4_super_block *es)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -522,14 +522,13 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
|
|||
ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
|
||||
name_index, name, buffer, (long)buffer_size);
|
||||
|
||||
error = -ENODATA;
|
||||
if (!EXT4_I(inode)->i_file_acl)
|
||||
goto cleanup;
|
||||
return -ENODATA;
|
||||
ea_idebug(inode, "reading block %llu",
|
||||
(unsigned long long)EXT4_I(inode)->i_file_acl);
|
||||
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
|
||||
if (!bh)
|
||||
goto cleanup;
|
||||
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
ea_bdebug(bh, "b_count=%d, refcount=%d",
|
||||
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
|
||||
error = ext4_xattr_check_block(inode, bh);
|
||||
|
|
@ -696,26 +695,23 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
|
|||
ea_idebug(inode, "buffer=%p, buffer_size=%ld",
|
||||
buffer, (long)buffer_size);
|
||||
|
||||
error = 0;
|
||||
if (!EXT4_I(inode)->i_file_acl)
|
||||
goto cleanup;
|
||||
return 0;
|
||||
ea_idebug(inode, "reading block %llu",
|
||||
(unsigned long long)EXT4_I(inode)->i_file_acl);
|
||||
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
|
||||
error = -EIO;
|
||||
if (!bh)
|
||||
goto cleanup;
|
||||
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bh))
|
||||
return PTR_ERR(bh);
|
||||
ea_bdebug(bh, "b_count=%d, refcount=%d",
|
||||
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
|
||||
error = ext4_xattr_check_block(inode, bh);
|
||||
if (error)
|
||||
goto cleanup;
|
||||
ext4_xattr_block_cache_insert(EA_BLOCK_CACHE(inode), bh);
|
||||
error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size);
|
||||
|
||||
error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer,
|
||||
buffer_size);
|
||||
cleanup:
|
||||
brelse(bh);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
|
@ -830,9 +826,9 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
|
|||
}
|
||||
|
||||
if (EXT4_I(inode)->i_file_acl) {
|
||||
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
|
||||
if (!bh) {
|
||||
ret = -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bh)) {
|
||||
ret = PTR_ERR(bh);
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
@ -1821,16 +1817,15 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
|
|||
|
||||
if (EXT4_I(inode)->i_file_acl) {
|
||||
/* The inode already has an extended attribute block. */
|
||||
bs->bh = sb_bread(sb, EXT4_I(inode)->i_file_acl);
|
||||
error = -EIO;
|
||||
if (!bs->bh)
|
||||
goto cleanup;
|
||||
bs->bh = ext4_sb_bread(sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bs->bh))
|
||||
return PTR_ERR(bs->bh);
|
||||
ea_bdebug(bs->bh, "b_count=%d, refcount=%d",
|
||||
atomic_read(&(bs->bh->b_count)),
|
||||
le32_to_cpu(BHDR(bs->bh)->h_refcount));
|
||||
error = ext4_xattr_check_block(inode, bs->bh);
|
||||
if (error)
|
||||
goto cleanup;
|
||||
return error;
|
||||
/* Find the named attribute. */
|
||||
bs->s.base = BHDR(bs->bh);
|
||||
bs->s.first = BFIRST(bs->bh);
|
||||
|
|
@ -1839,13 +1834,10 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
|
|||
error = xattr_find_entry(inode, &bs->s.here, bs->s.end,
|
||||
i->name_index, i->name, 1);
|
||||
if (error && error != -ENODATA)
|
||||
goto cleanup;
|
||||
return error;
|
||||
bs->s.not_found = error;
|
||||
}
|
||||
error = 0;
|
||||
|
||||
cleanup:
|
||||
return error;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
|
|
@ -2274,9 +2266,9 @@ static struct buffer_head *ext4_xattr_get_block(struct inode *inode)
|
|||
|
||||
if (!EXT4_I(inode)->i_file_acl)
|
||||
return NULL;
|
||||
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
|
||||
if (!bh)
|
||||
return ERR_PTR(-EIO);
|
||||
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bh))
|
||||
return bh;
|
||||
error = ext4_xattr_check_block(inode, bh);
|
||||
if (error) {
|
||||
brelse(bh);
|
||||
|
|
@ -2746,10 +2738,11 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
|
|||
if (EXT4_I(inode)->i_file_acl) {
|
||||
struct buffer_head *bh;
|
||||
|
||||
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
|
||||
error = -EIO;
|
||||
if (!bh)
|
||||
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bh)) {
|
||||
error = PTR_ERR(bh);
|
||||
goto cleanup;
|
||||
}
|
||||
error = ext4_xattr_check_block(inode, bh);
|
||||
if (error) {
|
||||
brelse(bh);
|
||||
|
|
@ -2903,11 +2896,12 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
|
|||
}
|
||||
|
||||
if (EXT4_I(inode)->i_file_acl) {
|
||||
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
|
||||
if (!bh) {
|
||||
EXT4_ERROR_INODE(inode, "block %llu read error",
|
||||
EXT4_I(inode)->i_file_acl);
|
||||
error = -EIO;
|
||||
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
|
||||
if (IS_ERR(bh)) {
|
||||
error = PTR_ERR(bh);
|
||||
if (error == -EIO)
|
||||
EXT4_ERROR_INODE(inode, "block %llu read error",
|
||||
EXT4_I(inode)->i_file_acl);
|
||||
goto cleanup;
|
||||
}
|
||||
error = ext4_xattr_check_block(inode, bh);
|
||||
|
|
@ -3060,8 +3054,10 @@ ext4_xattr_block_cache_find(struct inode *inode,
|
|||
while (ce) {
|
||||
struct buffer_head *bh;
|
||||
|
||||
bh = sb_bread(inode->i_sb, ce->e_value);
|
||||
if (!bh) {
|
||||
bh = ext4_sb_bread(inode->i_sb, ce->e_value, REQ_PRIO);
|
||||
if (IS_ERR(bh)) {
|
||||
if (PTR_ERR(bh) == -ENOMEM)
|
||||
return NULL;
|
||||
EXT4_ERROR_INODE(inode, "block %lu read error",
|
||||
(unsigned long)ce->e_value);
|
||||
} else if (ext4_xattr_cmp(header, BHDR(bh)) == 0) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue