From 390306c38dd43908f7f7730229999790a773d1d5 Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zheng.z.yan@intel.com>
Date: Fri, 4 Jan 2013 15:30:10 +0800
Subject: [PATCH] ceph: check mds_wanted for imported cap
The MDS may have incorrect wanted caps after importing caps. So the
client should check the value mds has and send cap update if necessary.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>
---
fs/ceph/caps.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 40b5bbe63a39..1e1e02055a2b 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2429,7 +2429,9 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
dout("mds wanted %s -> %s\n",
ceph_cap_string(le32_to_cpu(grant->wanted)),
ceph_cap_string(wanted));
- grant->wanted = cpu_to_le32(wanted);
+ /* imported cap may not have correct mds_wanted */
+ if (le32_to_cpu(grant->op) == CEPH_CAP_OP_IMPORT)
+ check_caps = 1;
}
cap->seq = seq;
--
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