mds: fix filelock state when Fsc is issued

LOCK_MIX is is a transition state for muti MDSs could do read/write
at the same time, but the Fcb caps are not allowed.

When the Fsc caps are issued, the lock state should be excl.

Fixes: https://tracker.ceph.com/issues/45935
Signed-off-by: Xiubo Li <xiubli@redhat.com>
(cherry picked from commit df682263d3f302333cdd76484bd56902133ed82f)

diff --git a/src/mds/CInode.cc b/src/mds/CInode.cc
index 0c79d4f7ac3bf51c8fca87110d3aeb86c0cd54a3..44658a8446e8628e344496f29d451498d83351a9 100644 (file)
--- a/src/mds/CInode.cc
+++ b/src/mds/CInode.cc
@@ -2931,9 +2931,12 @@ void CInode::choose_lock_state(SimpleLock *lock, int allissued)
     } else if (lock->get_state() != LOCK_MIX) {
       if (issued & (CEPH_CAP_GEXCL | CEPH_CAP_GBUFFER))
        lock->set_state(LOCK_EXCL);
-      else if (issued & CEPH_CAP_GWR)
-       lock->set_state(LOCK_MIX);
-      else if (lock->is_dirty()) {
+      else if (issued & CEPH_CAP_GWR) {
+        if (issued & (CEPH_CAP_GCACHE | CEPH_CAP_GSHARED))
+          lock->set_state(LOCK_EXCL);
+        else
+          lock->set_state(LOCK_MIX);
+      } else if (lock->is_dirty()) {
        if (is_replicated())
          lock->set_state(LOCK_MIX);
        else