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btrfs: fix uninitialized variable warning

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With Linus' tree, today's linux-next build (powercp ppc64_defconfig)
produced this warning:

fs/btrfs/delayed-inode.c: In function 'btrfs_delayed_update_inode':
fs/btrfs/delayed-inode.c:1598:6: warning: 'ret' may be used
uninitialized in this function

Introduced by commit 16cdcec736 ("btrfs: implement delayed inode items
operation").

This fixes a bug in btrfs_update_inode(): if the returned value from
btrfs_delayed_update_inode is a nonzero garbage, inode stat data are not
updated and several call paths may hit a BUG_ON or fail with strange
code.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
David Sterba 2011-06-03 16:29:08 +02:00 committed by Chris Mason
parent 7841cb2898
commit aa0467d8d2
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/delayed-inode.c
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@ -1595,7 +1595,7 @@ int btrfs_delayed_update_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode)
{
struct btrfs_delayed_node *delayed_node;
int ret;
int ret = 0;
delayed_node = btrfs_get_or_create_delayed_node(inode);
if (IS_ERR(delayed_node))