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| author | Wang Shilong <wangsl-fnst@cn.fujitsu.com> | 2013-01-12 01:22:33 -0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2013-01-21 11:19:56 +0100 |
| commit | 61f43e6880dee5983999fe40bf96c1cf43740b4c (patch) | |
| tree | 95ac823e8e7518a8e6fac3a0e2bae4a91a5d6b05 | |
| parent | 8d8759eb488f9e88fa5f976c4fd7ed205661c872 (diff) | |
| download | op-kernel-dev-61f43e6880dee5983999fe40bf96c1cf43740b4c.zip op-kernel-dev-61f43e6880dee5983999fe40bf96c1cf43740b4c.tar.gz | |
Ext3: add necessary check in case IO error happens
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@cn.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
| -rw-r--r-- | 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 b176d42..6e4f8a5 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); |
