From: Yan, Zheng <zheng.z.yan@intel.com>
Date: Tue, 18 Mar 2014 02:15:29 +0000 (+0800)
Subject: ceph: set mds_wanted when MDS reply changes a cap to auth cap
X-Git-Tag: firefly_0821_release~176^2~3948^2~56
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d9ffc4f77073e7e1ca731f21804769de9c094b87;p=firefly-linux-kernel-4.4.55.git

ceph: set mds_wanted when MDS reply changes a cap to auth cap

When adjusting caps client wants, MDS does not record caps that are
not allowed. For non-auth MDS, it does not record WR caps. So when
a MDS reply changes a non-auth cap to auth cap, client needs to set
cap's mds_wanted according to the reply.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
---

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index d9ef44e5474e..2e5e648eb5c3 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -622,8 +622,10 @@ retry:
 
 	if (flags & CEPH_CAP_FLAG_AUTH) {
 		if (ci->i_auth_cap == NULL ||
-		    ceph_seq_cmp(ci->i_auth_cap->mseq, mseq) < 0)
+		    ceph_seq_cmp(ci->i_auth_cap->mseq, mseq) < 0) {
 			ci->i_auth_cap = cap;
+			cap->mds_wanted = wanted;
+		}
 		ci->i_cap_exporting_issued = 0;
 	} else {
 		WARN_ON(ci->i_auth_cap == cap);