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nfsd4: don't BUG in delegation break callback

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These conditions would indeed indicate bugs in the code, but if we want
to hear about them we're likely better off warning and returning than
immediately dying while holding file_lock_lock.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-10-16 12:39:33 -04:00
parent 7032a3dd92
commit 7fa10cd12d
1 changed files with 8 additions and 3 deletions
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11
fs/nfsd/nfs4state.c
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@ -2554,9 +2554,14 @@ static void nfsd_break_deleg_cb(struct file_lock *fl)
struct nfs4_file *fp = (struct nfs4_file *)fl->fl_owner; struct nfs4_file *fp = (struct nfs4_file *)fl->fl_owner;
struct nfs4_delegation *dp; struct nfs4_delegation *dp;
BUG_ON(!fp); if (!fp) {
/* We assume break_lease is only called once per lease: */ WARN(1, "(%p)->fl_owner NULL\n", fl);
BUG_ON(fp->fi_had_conflict); return;
}
if (fp->fi_had_conflict) {
WARN(1, "duplicate break on %p\n", fp);
return;
}
/* /*
* We don't want the locks code to timeout the lease for us; * We don't want the locks code to timeout the lease for us;
* we'll remove it ourself if a delegation isn't returned * we'll remove it ourself if a delegation isn't returned