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authorShen Feng <shen@cn.fujitsu.com>2008-07-11 19:27:31 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-07-11 19:27:31 -0400
commitfdf6c7a7683c6272e953a33358920e98a4d93cf0 (patch)
tree173830a929ad743561c7243b181cf4b3f4528c96
parent31b481dc7c249eac0a108ec5dfc0d4aef2217e39 (diff)
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>
-rw-r--r--fs/ext4/mballoc.c27
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)