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spf=pass smtp.mailfrom=rgoldwyn@suse.de DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com AC84EC0587D1 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 96AF5AEA9; Wed, 26 Jul 2017 23:58:42 +0000 (UTC) From: Goldwyn Rodrigues To: linux-block@vger.kernel.org Date: Wed, 26 Jul 2017 18:58:05 -0500 Message-Id: <20170726235806.12148-9-rgoldwyn@suse.de> In-Reply-To: <20170726235806.12148-1-rgoldwyn@suse.de> References: <20170726235806.12148-1-rgoldwyn@suse.de> X-Greylist: Delayed for 00:15:39 by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Thu, 27 Jul 2017 00:13:51 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Thu, 27 Jul 2017 00:13:51 +0000 (UTC) for IP:'195.135.220.15' DOMAIN:'mx2.suse.de' HELO:'mx1.suse.de' FROM:'rgoldwyn@suse.de' RCPT:'' X-RedHat-Spam-Score: -2.402 (DCC_REPUT_13_19, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, SPF_PASS) 195.135.220.15 mx2.suse.de 195.135.220.15 mx2.suse.de X-Scanned-By: MIMEDefang 2.78 on 10.5.110.32 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-loop: dm-devel@redhat.com Cc: hch@infradead.org, linux-raid@vger.kernel.org, dm-devel@redhat.com, jack@suse.cz, Goldwyn Rodrigues Subject: [dm-devel] [PATCH 8/9] dm: Add nowait support to dm-delay X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Thu, 27 Jul 2017 00:13:59 +0000 (UTC) X-Virus-Scanned: ClamAV using ClamSMTP From: Goldwyn Rodrigues I/O should bail out if any value for delay is set. Signed-off-by: Goldwyn Rodrigues --- drivers/md/dm-delay.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c index ae3158795d26..97da97c3c039 100644 --- a/drivers/md/dm-delay.c +++ b/drivers/md/dm-delay.c @@ -240,6 +240,10 @@ static int delay_bio(struct delay_c *dc, int delay, struct bio *bio) if (!delay || !atomic_read(&dc->may_delay)) return DM_MAPIO_REMAPPED; + if (bio->bi_opf & REQ_NOWAIT) { + bio_wouldblock_error(bio); + return DM_MAPIO_SUBMITTED; + } delayed = dm_per_bio_data(bio, sizeof(struct dm_delay_info)); delayed->context = dc;