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| author | Younger Liu <younger.liucn@gmail.com> | 2014-04-10 23:03:43 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-04-10 23:03:43 -0400 |
| commit | c57ab39b9658315a742b6e61fdc86bb4d20cf566 (patch) | |
| tree | b59bef7025119de7c66a36cf9de27de503eaa8a4 /fs/ext4/mballoc.c | |
| parent | 1ce01c4a199c50b023802be25261c0c02b2f0214 (diff) | |
| download | op-kernel-dev-c57ab39b9658315a742b6e61fdc86bb4d20cf566.zip op-kernel-dev-c57ab39b9658315a742b6e61fdc86bb4d20cf566.tar.gz | |
ext4: return ENOMEM rather than EIO when find_###_page() fails
Return ENOMEM rather than EIO when find_get_page() fails in
ext4_mb_get_buddy_page_lock() and find_or_create_page() fails in
ext4_mb_load_buddy().
Signed-off-by: Younger Liu <younger.liucn@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.c')
| -rw-r--r-- | fs/ext4/mballoc.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index a888cac..73ccbb3 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -989,7 +989,7 @@ static int ext4_mb_get_buddy_page_lock(struct super_block *sb, poff = block % blocks_per_page; page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS); if (!page) - return -EIO; + return -ENOMEM; BUG_ON(page->mapping != inode->i_mapping); e4b->bd_bitmap_page = page; e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize); @@ -1003,7 +1003,7 @@ static int ext4_mb_get_buddy_page_lock(struct super_block *sb, pnum = block / blocks_per_page; page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS); if (!page) - return -EIO; + return -ENOMEM; BUG_ON(page->mapping != inode->i_mapping); e4b->bd_buddy_page = page; return 0; @@ -1168,7 +1168,11 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, unlock_page(page); } } - if (page == NULL || !PageUptodate(page)) { + if (page == NULL) { + ret = -ENOMEM; + goto err; + } + if (!PageUptodate(page)) { ret = -EIO; goto err; } @@ -1197,7 +1201,11 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, unlock_page(page); } } - if (page == NULL || !PageUptodate(page)) { + if (page == NULL) { + ret = -ENOMEM; + goto err; + } + if (!PageUptodate(page)) { ret = -EIO; goto err; } |
