[PATCH 11/15] dm stripe: support copy

Path	csiph.com!usenet.pasdenom.info!aioe.org!bofh.it!news.nic.it!robomod
From	Mikulas Patocka <mpatocka@redhat.com>
Newsgroups	linux.kernel
Subject	[PATCH 11/15] dm stripe: support copy
Date	Thu, 10 Dec 2015 18:40:02 +0100
Message-ID	<qEdm9-OR-7@gated-at.bofh.it> (permalink)
References	<qEdma-OR-9@gated-at.bofh.it>
X-Original-To	"James E.J. Bottomley" <JBottomley@odin.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, Jens Axboe <axboe@kernel.dk>, Mike Snitzer <msnitzer@redhat.com>, Jonathan Brassow <jbrassow@redhat.com>
X-X-Sender	mpatocka@file01.intranet.prod.int.rdu2.redhat.com
User-Agent	Alpine 2.02 (LRH 1266 2009-07-14)
MIME-Version	1.0
Content-Type	TEXT/PLAIN; charset=US-ASCII
X-Scanned-By	MIMEDefang 2.68 on 10.5.11.23
Sender	robomod@news.nic.it
List-ID	<linux-kernel.vger.kernel.org>
X-Mailing-List	linux-kernel@vger.kernel.org
Approved	robomod@news.nic.it
Lines	28
Organization	linux.* mail to news gateway
X-Original-Cc	dm-devel@redhat.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org
X-Original-Date	Thu, 10 Dec 2015 12:31:00 -0500 (EST)
X-Original-Message-ID	<alpine.LRH.2.02.1512101214320.25927@file01.intranet.prod.int.rdu2.redhat.com>
X-Original-References	<alpine.LRH.2.02.1512101145430.25927@file01.intranet.prod.int.rdu2.redhat.com>
X-Original-Sender	linux-kernel-owner@vger.kernel.org
Xref	csiph.com linux.kernel:1288717

Show key headers only | View raw

Support the copy operation for the stripe target.

In stripe_merge, we verify that the underlying device supports copy. If it
doesn't, we can fail fast without any bio being contructed.

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

---
 drivers/md/dm-stripe.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-4.3-rc1/drivers/md/dm-stripe.c
===================================================================
--- linux-4.3-rc1.orig/drivers/md/dm-stripe.c	2015-09-14 16:06:36.000000000 +0200
+++ linux-4.3-rc1/drivers/md/dm-stripe.c	2015-09-14 16:23:01.000000000 +0200
@@ -169,6 +169,7 @@ static int stripe_ctr(struct dm_target *
 	ti->num_flush_bios = stripes;
 	ti->num_discard_bios = stripes;
 	ti->num_write_same_bios = stripes;
+	ti->copy_supported = 1;
 
 	sc->chunk_size = chunk_size;
 	if (chunk_size & (chunk_size - 1))
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH 11/15] dm stripe: support copy Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100

csiph-web