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From: Mikulas Patocka <mpatocka@redhat.com>
To: JeffleXu <jefflexu@linux.alibaba.com>,
	Mike Snitzer <msnitzer@redhat.com>,
	Heinz Mauelshagen <heinzm@redhat.com>,
	axboe@kernel.dk, caspar@linux.alibaba.com,
	io-uring@vger.kernel.org, linux-block@vger.kernel.org,
	joseph.qi@linux.alibaba.com, dm-devel@redhat.com, hch@lst.de
Cc: Mikulas Patocka <mpatocka@redhat.com>
Subject: [PATCH 4/4] dm: support I/O polling
Date: Tue, 02 Mar 2021 20:05:17 +0100	[thread overview]
Message-ID: <20210302190555.201228400@debian-a64.vm> (raw)

[-- Attachment #1: dm-poll.patch --]
[-- Type: text/plain, Size: 760 bytes --]

Support I/O polling if submit_bio_noacct_mq_direct returned non-empty
cookie.

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

---
 drivers/md/dm.c |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux-2.6/drivers/md/dm.c
===================================================================
--- linux-2.6.orig/drivers/md/dm.c	2021-03-02 19:26:34.000000000 +0100
+++ linux-2.6/drivers/md/dm.c	2021-03-02 19:26:34.000000000 +0100
@@ -1682,6 +1682,11 @@ static void __split_and_process_bio(stru
 		}
 	}
 
+	if (ci.poll_cookie != BLK_QC_T_NONE) {
+		while (atomic_read(&ci.io->io_count) > 1 &&
+		       blk_poll(ci.poll_queue, ci.poll_cookie, true)) ;
+	}
+
 	/* drop the extra reference count */
 	dec_pending(ci.io, errno_to_blk_status(error));
 }


WARNING: multiple messages have this Message-ID (diff)
From: Mikulas Patocka <mpatocka@redhat.com>
To: JeffleXu <jefflexu@linux.alibaba.com>,
	Mike Snitzer <msnitzer@redhat.com>,
	 Heinz Mauelshagen <heinzm@redhat.com>,
	axboe@kernel.dk, caspar@linux.alibaba.com,
	io-uring@vger.kernel.org, linux-block@vger.kernel.org,
	joseph.qi@linux.alibaba.com, dm-devel@redhat.com, hch@lst.de
Cc: Mikulas Patocka <mpatocka@redhat.com>
Subject: [dm-devel] [PATCH 4/4] dm: support I/O polling
Date: Tue, 02 Mar 2021 20:05:17 +0100	[thread overview]
Message-ID: <20210302190555.201228400@debian-a64.vm> (raw)

[-- Attachment #1: dm-poll.patch --]
[-- Type: text/plain, Size: 859 bytes --]

Support I/O polling if submit_bio_noacct_mq_direct returned non-empty
cookie.

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

---
 drivers/md/dm.c |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux-2.6/drivers/md/dm.c
===================================================================
--- linux-2.6.orig/drivers/md/dm.c	2021-03-02 19:26:34.000000000 +0100
+++ linux-2.6/drivers/md/dm.c	2021-03-02 19:26:34.000000000 +0100
@@ -1682,6 +1682,11 @@ static void __split_and_process_bio(stru
 		}
 	}
 
+	if (ci.poll_cookie != BLK_QC_T_NONE) {
+		while (atomic_read(&ci.io->io_count) > 1 &&
+		       blk_poll(ci.poll_queue, ci.poll_cookie, true)) ;
+	}
+
 	/* drop the extra reference count */
 	dec_pending(ci.io, errno_to_blk_status(error));
 }

--
dm-devel mailing list
dm-devel@redhat.com
https://listman.redhat.com/mailman/listinfo/dm-devel


             reply	other threads:[~2021-03-02 23:52 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-02 19:05 Mikulas Patocka [this message]
2021-03-02 19:05 ` [dm-devel] [PATCH 4/4] dm: support I/O polling Mikulas Patocka
2021-03-03  2:53 ` JeffleXu
2021-03-03  2:53   ` JeffleXu
2021-03-03 10:09   ` Mikulas Patocka
2021-03-03 10:09     ` Mikulas Patocka
2021-03-04  2:57     ` JeffleXu
2021-03-04  2:57       ` JeffleXu
2021-03-04 10:09       ` Mikulas Patocka
2021-03-04 10:09         ` Mikulas Patocka
2021-03-05 18:21         ` Jens Axboe
2021-03-05 18:21           ` Jens Axboe
2021-03-04 15:01     ` Jeff Moyer
2021-03-04 15:01       ` Jeff Moyer
2021-03-04 15:11       ` Mike Snitzer
2021-03-04 15:11         ` [dm-devel] " Mike Snitzer
2021-03-04 15:12       ` Mikulas Patocka
2021-03-04 15:12         ` Mikulas Patocka
2021-03-05  9:52     ` JeffleXu
2021-03-05  9:52       ` JeffleXu
2021-03-05 17:46       ` Heinz Mauelshagen
2021-03-05 17:46         ` Heinz Mauelshagen
2021-03-05 17:56         ` Heinz Mauelshagen
2021-03-05 17:56           ` Heinz Mauelshagen
2021-03-05 18:09           ` Mike Snitzer
2021-03-05 18:09             ` [dm-devel] " Mike Snitzer
2021-03-05 18:19             ` Heinz Mauelshagen
2021-03-05 18:19               ` Heinz Mauelshagen
2021-03-08  3:54           ` JeffleXu
2021-03-08  3:54             ` JeffleXu
2021-03-08  3:55             ` Jens Axboe
2021-03-08  3:55               ` Jens Axboe
2021-03-09 11:42             ` Heinz Mauelshagen
2021-03-09 11:42               ` Heinz Mauelshagen

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