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| author | Wang Shilong <wangsl-fnst@cn.fujitsu.com> | 2013-01-12 01:19:32 -0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2013-01-21 11:19:56 +0100 |
| commit | 8d8759eb488f9e88fa5f976c4fd7ed205661c872 (patch) | |
| tree | 3c33cd06749c2c1caba82b3fcab64789c9f3aab0 /fs/ext2 | |
| parent | f56426ae4d4414c9c996567710dceecbdfc39acc (diff) | |
| download | linux-8d8759eb488f9e88fa5f976c4fd7ed205661c872.tar.gz linux-8d8759eb488f9e88fa5f976c4fd7ed205661c872.tar.bz2 linux-8d8759eb488f9e88fa5f976c4fd7ed205661c872.zip | |
Ext2: free memory allocated and forget buffer head when io error happens
Add a necessary check when an io error happens.
If io error happens,free the memory allocated and forget
buffer head.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext2')
| -rw-r--r-- | fs/ext2/inode.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 6363ac66fafa..c3881e56662e 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -495,6 +495,10 @@ static int ext2_alloc_branch(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); memset(bh->b_data, 0, blocksize); @@ -523,6 +527,14 @@ static int ext2_alloc_branch(struct inode *inode, } *blks = num; return err; + +failed: + for (i = 1; i < n; i++) + bforget(branch[i].bh); + for (i = 0; i < indirect_blks; i++) + ext2_free_blocks(inode, new_blocks[i], 1); + ext2_free_blocks(inode, new_blocks[i], num); + return err; } /** |