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A small lock imbalance fix, marked for stable.

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Merge tag 'ceph-for-4.14-rc7' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A small lock imbalance fix, marked for stable"

* tag 'ceph-for-4.14-rc7' of git://github.com/ceph/ceph-client:
  ceph: unlock dangling spinlock in try_flush_caps()
This commit is contained in:
Linus Torvalds 2017-10-26 17:04:20 +02:00
commit 601c5c2ee9
1 changed files with 4 additions and 1 deletions
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5
fs/ceph/caps.c
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@ -1991,6 +1991,7 @@ static int try_flush_caps(struct inode *inode, u64 *ptid)
retry:
spin_lock(&ci->i_ceph_lock);
if (ci->i_ceph_flags & CEPH_I_NOFLUSH) {
spin_unlock(&ci->i_ceph_lock);
dout("try_flush_caps skipping %p I_NOFLUSH set\n", inode);
goto out;
}
@ -2008,8 +2009,10 @@ retry:
mutex_lock(&session->s_mutex);
goto retry;
}
if (cap->session->s_state < CEPH_MDS_SESSION_OPEN)
if (cap->session->s_state < CEPH_MDS_SESSION_OPEN) {
spin_unlock(&ci->i_ceph_lock);
goto out;
}
flushing = __mark_caps_flushing(inode, session, true,
&flush_tid, &oldest_flush_tid);