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| author | Shen Feng <shen@cn.fujitsu.com> | 2008-07-12 03:27:31 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-07-12 03:27:31 +0400 |
| commit | fdf6c7a7683c6272e953a33358920e98a4d93cf0 (patch) | |
| tree | 173830a929ad743561c7243b181cf4b3f4528c96 /fs/ext4/mballoc.c | |
| parent | 31b481dc7c249eac0a108ec5dfc0d4aef2217e39 (diff) | |
| download | linux-fdf6c7a7683c6272e953a33358920e98a4d93cf0.tar.xz | |
ext4: add error processing when calling ext4_mb_init_cache in mballoc
Add error processing for ext4_mb_load_buddy when it calls
ext4_mb_init_cache.
Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.c')
| -rw-r--r-- | fs/ext4/mballoc.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index d429014071c0..b64600be2066 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -890,6 +890,7 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, int pnum; int poff; struct page *page; + int ret; mb_debug("load group %lu\n", group); @@ -921,15 +922,21 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, if (page) { BUG_ON(page->mapping != inode->i_mapping); if (!PageUptodate(page)) { - ext4_mb_init_cache(page, NULL); + ret = ext4_mb_init_cache(page, NULL); + if (ret) { + unlock_page(page); + goto err; + } mb_cmp_bitmaps(e4b, page_address(page) + (poff * sb->s_blocksize)); } unlock_page(page); } } - if (page == NULL || !PageUptodate(page)) + if (page == NULL || !PageUptodate(page)) { + ret = -EIO; goto err; + } e4b->bd_bitmap_page = page; e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize); mark_page_accessed(page); @@ -945,14 +952,20 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS); if (page) { BUG_ON(page->mapping != inode->i_mapping); - if (!PageUptodate(page)) - ext4_mb_init_cache(page, e4b->bd_bitmap); - + if (!PageUptodate(page)) { + ret = ext4_mb_init_cache(page, e4b->bd_bitmap); + if (ret) { + unlock_page(page); + goto err; + } + } unlock_page(page); } } - if (page == NULL || !PageUptodate(page)) + if (page == NULL || !PageUptodate(page)) { + ret = -EIO; goto err; + } e4b->bd_buddy_page = page; e4b->bd_buddy = page_address(page) + (poff * sb->s_blocksize); mark_page_accessed(page); @@ -969,7 +982,7 @@ err: page_cache_release(e4b->bd_buddy_page); e4b->bd_buddy = NULL; e4b->bd_bitmap = NULL; - return -EIO; + return ret; } static void ext4_mb_release_desc(struct ext4_buddy *e4b) |