diff options
| author | Sunil Mushran <sunil.mushran@oracle.com> | 2010-02-01 16:55:50 -0800 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-02-02 23:51:16 -0800 |
| commit | db0f6ce69776370232431eb8be85a5b18b0019c0 (patch) | |
| tree | cd3a18bf13fa6dcbf2c59940565ddfaedabcdd89 | |
| parent | 0d74125a6a68d4f1969ecaf0b3543f315916ccdc (diff) | |
| download | linux-db0f6ce69776370232431eb8be85a5b18b0019c0.tar.bz2 | |
ocfs2: Remove overzealous BUG_ON during blocked lock processing
During blocked lock processing, we should consider the possibility that the
lock is no longer blocking.
Joel Becker <joel.becker@oracle.com> assisted in fixing this issue.
Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
| -rw-r--r-- | fs/ocfs2/dlmglue.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index ac24f49ae2fb..ce8e061c9a22 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -3392,9 +3392,17 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb, spin_lock_irqsave(&lockres->l_lock, flags); - BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED)); - recheck: + /* + * Is it still blocking? If not, we have no more work to do. + */ + if (!(lockres->l_flags & OCFS2_LOCK_BLOCKED)) { + BUG_ON(lockres->l_blocking != DLM_LOCK_NL); + spin_unlock_irqrestore(&lockres->l_lock, flags); + ret = 0; + goto leave; + } + if (lockres->l_flags & OCFS2_LOCK_BUSY) { /* XXX * This is a *big* race. The OCFS2_LOCK_PENDING flag |