From: Martin K. Petersen <martin.petersen@oracle.com>
Date: Tue, 22 Mar 2011 04:27:42 +0000 (-0400)
Subject: sd: Fail discard requests when logical block provisioning has been disabled
X-Git-Tag: firefly_0821_release~7613^2~2117
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=09b9cc44c942256026bf7a63fec2155b8f488899;p=firefly-linux-kernel-4.4.55.git

sd: Fail discard requests when logical block provisioning has been disabled

Ensure that we kill discard requests after logical block provisioning
has been disabled in sysfs.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3be5db5d6343..7ff61d76b4c5 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -597,6 +597,7 @@ static int scsi_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq)
 		break;
 
 	default:
+		ret = BLKPREP_KILL;
 		goto out;
 	}