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NFS: Fix a reference and lock leak in nfs_lock_and_join_requests()

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Yes, this is a situation that should never happen (hence the WARN_ON)
but we should still ensure that we free up the locks and references to
the faulty pages.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2017-07-17 10:11:11 -04:00
parent 08fead2ae5
commit 7cb9cd9aa2
1 changed files with 1 additions and 2 deletions
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3
fs/nfs/write.c
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@ -526,8 +526,7 @@ try_again:
} else if (WARN_ON_ONCE(subreq->wb_offset < head->wb_offset ||
((subreq->wb_offset + subreq->wb_bytes) >
(head->wb_offset + total_bytes)))) {
nfs_page_group_unlock(head);
spin_unlock(&inode->i_lock);
nfs_unroll_locks_and_wait(inode, head, subreq);
return ERR_PTR(-EIO);
}