From: Mikulas Patocka <mpatocka@redhat.com>
Date: Sun, 19 Apr 2020 08:34:00 +0000 (-0400)
Subject: dm writecache: remove superfluous test in persistent_memory_claim
X-Git-Tag: v5.8-rc1~125^2~54
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=499c18045eab16656ef4159c35b05865038f9f25;p=thirdparty%2Fkernel%2Flinux.git

dm writecache: remove superfluous test in persistent_memory_claim

Remove superfluous test if dax_dev is NULL - dax_direct_access already
does this test.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---

diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 613c171b1b6d2..d29d3e234e01b 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -234,10 +234,6 @@ static int persistent_memory_claim(struct dm_writecache *wc)
 
 	wc->memory_vmapped = false;
 
-	if (!wc->ssd_dev->dax_dev) {
-		r = -EOPNOTSUPP;
-		goto err1;
-	}
 	s = wc->memory_map_size;
 	p = s >> PAGE_SHIFT;
 	if (!p) {