From: Sage Weil <sage@newdream.net>
Date: Fri, 7 May 2010 18:26:34 +0000 (-0700)
Subject: ceph: fix open file counting on snapped inodes when mds returns no caps
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=04d000eb358919043da538f197d63f2a5924a525;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ceph: fix open file counting on snapped inodes when mds returns no caps

It's possible the MDS will not issue caps on a snapped inode, in which case
an open request may not __ceph_get_fmode(), botching the open file
counting.  (This is actually a server bug, but the client shouldn't BUG out
in this case.)

Signed-off-by: Sage Weil <sage@newdream.net>
---

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 261f3e6c0bcf..85b4d2ffdeba 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -733,6 +733,10 @@ no_change:
 				__ceph_get_fmode(ci, cap_fmode);
 			spin_unlock(&inode->i_lock);
 		}
+	} else if (cap_fmode >= 0) {
+		pr_warning("mds issued no caps on %llx.%llx\n",
+			   ceph_vinop(inode));
+		__ceph_get_fmode(ci, cap_fmode);
 	}
 
 	/* update delegation info? */