From: Xiubo Li <xiubli@redhat.com>
Date: Fri, 5 Aug 2022 04:33:03 +0000 (+0800)
Subject: ceph: wake up the waiters if any new caps comes
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f791357330b0043ec953ce122ab7519af4b9d24a;p=linux.git

ceph: wake up the waiters if any new caps comes

When new caps comes we need to wake up the waiters and also when
revoking the caps, there also could be new caps comes.

Link: https://tracker.ceph.com/issues/54044
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 53cfe026b3ea5..0ddd91eadbce2 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -754,6 +754,7 @@ void ceph_add_cap(struct inode *inode,
 	cap->issue_seq = seq;
 	cap->mseq = mseq;
 	cap->cap_gen = gen;
+	wake_up_all(&ci->i_cap_wq);
 }
 
 /*
@@ -3550,6 +3551,9 @@ static void handle_cap_grant(struct inode *inode,
 			check_caps = 1; /* check auth cap only */
 		else
 			check_caps = 2; /* check all caps */
+		/* If there is new caps, try to wake up the waiters */
+		if (~cap->issued & newcaps)
+			wake = true;
 		cap->issued = newcaps;
 		cap->implemented |= newcaps;
 	} else if (cap->issued == newcaps) {