[PATCH gfs2/for-next] gfs2: use delay during spinlock area

[Alexander Aring <aahringo@redhat.com>]

In a rare case of gfs2 spectator mount the ls->ls_recover_spin is being
held. In this case we cannot call msleep_interruptible() as we a in a
non-sleepable context. Replace it with mdelay() to busy wait for 1
second.

Cc: stable@vger.kernel.org
Fixes: 4a7727725dc7 ("GFS2: Fix recovery issues for spectators")
Signed-off-by: Alexander Aring <aahringo@redhat.com>
---
 fs/gfs2/lock_dlm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 58aeeae7ed8c..ac0afedff49b 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -996,7 +996,7 @@ static int control_mount(struct gfs2_sbd *sdp)
 		if (sdp->sd_args.ar_spectator) {
 			fs_info(sdp, "Recovery is required. Waiting for a "
 				"non-spectator to mount.\n");
-			msleep_interruptible(1000);
+			mdelay(1000);
 		} else {
 			fs_info(sdp, "control_mount wait1 block %u start %u "
 				"mount %u lvb %u flags %lx\n", block_gen,
-- 
2.43.0