From: Greg Farnum <greg@inktank.com>
Date: Mon, 29 Sep 2014 23:10:36 +0000 (-0700)
Subject: Locker: accept ctime updates from clients without dirty write caps
X-Git-Tag: v0.80.8~71
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=9fee8de25ab5c155cd6a3d32a71e45630a5ded15;p=ceph.git

Locker: accept ctime updates from clients without dirty write caps

The ctime changes any time the inode does. That can happen even without
the file itself having changed, so we'd better accept the update whenever
the auth caps have dirtied, without worrying about the file caps!

Fixes: #9514
Backport: firefly

Signed-off-by: Greg Farnum <greg@inktank.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: John Spray <john.spray@redhat.com>
(cherry picked from commit 0ea20a668cf859881c49b33d1b6db4e636eda18a)
---

diff --git a/src/mds/Locker.cc b/src/mds/Locker.cc
index 74305b9cbf639..3aea3ad84a958 100644
--- a/src/mds/Locker.cc
+++ b/src/mds/Locker.cc
@@ -2769,11 +2769,18 @@ void Locker::_do_snap_update(CInode *in, snapid_t snap, int dirty, snapid_t foll
 
 void Locker::_update_cap_fields(CInode *in, int dirty, MClientCaps *m, inode_t *pi)
 {
+
+  utime_t ctime = m->get_ctime();
+  if (dirty && ctime > pi->ctime) {
+    dout(7) << "  ctime " << pi->ctime << " -> " << ctime
+	    << " for " << *in << dendl;
+    pi->ctime = ctime;
+  }
+
   // file
   if (dirty & (CEPH_CAP_FILE_EXCL|CEPH_CAP_FILE_WR)) {
     utime_t atime = m->get_atime();
     utime_t mtime = m->get_mtime();
-    utime_t ctime = m->get_ctime();
     uint64_t size = m->get_size();
     version_t inline_version = m->inline_version;
     
@@ -2783,11 +2790,6 @@ void Locker::_update_cap_fields(CInode *in, int dirty, MClientCaps *m, inode_t *
 	      << " for " << *in << dendl;
       pi->mtime = mtime;
     }
-    if (ctime > pi->ctime) {
-      dout(7) << "  ctime " << pi->ctime << " -> " << ctime
-	      << " for " << *in << dendl;
-      pi->ctime = ctime;
-    }
     if (in->inode.is_file() &&   // ONLY if regular file
 	size > pi->size) {
       dout(7) << "  size " << pi->size << " -> " << size