From: Wang Shilong <wangsl-fnst@xxxxxxxxxxxxxx>
As we know io error may happen when the function 'sb_getblk'
is called.Add necessary check for it
The patch also fix a coding style problem.
Signed-off-by: Wang Shilong <wangsl-fnst@xxxxxxxxxxxxxx>
---
fs/ext3/inode.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index ff574b4..61bc8bd 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -676,6 +676,10 @@ static int ext3_alloc_branch(handle_t *handle,
struct inode *inode,
* parent to disk.
*/
bh = sb_getblk(inode->i_sb, new_blocks[n-1]);
+ if (unlikely(!bh)) {
+ err = -ENOMEM;
+ goto failed;
+ }
branch[n].bh = bh;
lock_buffer(bh);
BUFFER_TRACE(bh, "call get_create_access");
@@ -717,7 +721,7 @@ failed:
BUFFER_TRACE(branch[i].bh, "call journal_forget");
ext3_journal_forget(handle, branch[i].bh);
}
- for (i = 0; i <indirect_blks; i++)
+ for (i = 0; i < indirect_blks; i++)
ext3_free_blocks(handle, inode, new_blocks[i], 1);
ext3_free_blocks(handle, inode, new_blocks[i], num);
--
1.7.7.6
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