From: Xiubo Li <xiubli@redhat.com>

Date: Fri, 5 Aug 2022 12:33:03 +0800

Subject: ceph: wake up the waiters if any new caps comes

Git-commit: f791357330b0043ec953ce122ab7519af4b9d24a

Patch-mainline: v6.1-rc1

References: jsc#SES-1880

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>

Acked-by: Luis Henriques <lhenriques@suse.de>

---

 fs/ceph/caps.c | 4 ++++

 1 file changed, 4 insertions(+)

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c

index 53cfe026b3ea..0ddd91eadbce 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) {