From: "Yan, Zheng" <zyan@redhat.com>
Date: Mon, 8 Jan 2018 14:36:25 +0800
Subject: ceph: delete unreachable code in ceph_check_caps()
Git-commit: ee612d954fe96612afaa966d8a67b736ba0c571e
Patch-mainline: v4.16-rc1
References: FATE#324714

"revoking & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)" has already
been tested before calling try_nonblocking_invalidate()

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
 fs/ceph/caps.c |   15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1792,18 +1792,9 @@ retry_locked:
 	    !tried_invalidate) {
 		dout("check_caps trying to invalidate on %p\n", inode);
 		if (try_nonblocking_invalidate(inode) < 0) {
-			if (revoking & (CEPH_CAP_FILE_CACHE|
-					CEPH_CAP_FILE_LAZYIO)) {
-				dout("check_caps queuing invalidate\n");
-				queue_invalidate = true;
-				ci->i_rdcache_revoking = ci->i_rdcache_gen;
-			} else {
-				dout("check_caps failed to invalidate pages\n");
-				/* we failed to invalidate pages.  check these
-				   caps again later. */
-				force_requeue = true;
-				__cap_set_timeouts(mdsc, ci);
-			}
+			dout("check_caps queuing invalidate\n");
+			queue_invalidate = true;
+			ci->i_rdcache_revoking = ci->i_rdcache_gen;
 		}
 		tried_invalidate = true;
 		goto retry_locked;