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xfs: fix double IRELE in xfs_dqrele_inode 

xfs_dqrele_inode calls xfs_iput to release the ilock and a reference
and then also calls IRELE which does a second decrement of the reference
count.  This leads to a premature freeing of inodes when quotas were turned
off while the filesystem was mounted.

Thanks to Utako Kusaka for reporting the bug and provinding a good testcase.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Utako Kusaka <u-kusaka@wm.jp.nec.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig 2009-10-12 23:42:10 +00:00 committed by Alex Elder
parent d0800703fe
commit 05277c75f6
1 changed files with 0 additions and 1 deletions
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1
fs/xfs/quota/xfs_qm_syscalls.c
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@ -876,7 +876,6 @@ xfs_dqrele_inode(
ip->i_gdquot = NULL;
}
xfs_iput(ip, XFS_ILOCK_EXCL);
IRELE(ip);
return 0;
}