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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2009-01-05 21:48:56 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-01-05 21:48:56 -0500
commit29eaf024980e07cc01f31ae4ea5d68c917f4b7da (patch)
tree969f94ad36afc5e1edcd51964f0c6bc5b0044371 /fs
parent8556e8f3b6c4c11601ce1e9ea8090a6d8bd5daae (diff)
downloadop-kernel-dev-29eaf024980e07cc01f31ae4ea5d68c917f4b7da.zip
op-kernel-dev-29eaf024980e07cc01f31ae4ea5d68c917f4b7da.tar.gz
ext4: Init the complete page while building buddy cache
We need to init the complete page during buddy cache init by setting the contents to '1'. Otherwise we can see the following errors after doing an online resize of the filesystem: EXT4-fs error (device sdb1): ext4_mb_mark_diskspace_used: Allocating block 1040385 in system zone of 127 group Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/mballoc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 0c7e247..fd2294d 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -846,6 +846,8 @@ static int ext4_mb_init_cache(struct page *page, char *incore)
err = 0;
first_block = page->index * blocks_per_page;
+ /* init the page */
+ memset(page_address(page), 0xff, PAGE_CACHE_SIZE);
for (i = 0; i < blocks_per_page; i++) {
int group;
struct ext4_group_info *grinfo;
@@ -872,7 +874,6 @@ static int ext4_mb_init_cache(struct page *page, char *incore)
BUG_ON(incore == NULL);
mb_debug("put buddy for group %u in page %lu/%x\n",
group, page->index, i * blocksize);
- memset(data, 0xff, blocksize);
grinfo = ext4_get_group_info(sb, group);
grinfo->bb_fragments = 0;
memset(grinfo->bb_counters, 0,
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