Attachment 185970 Details for Bug 221973 – cam iosched: Use the write queue for BIO_ZONE commands

[patch] cam iosched: Use the write queue for BIO_ZONE commands

0006-cam-iosched-Use-the-write-queue-for-BIO_ZONE-commands.diff (text/plain), 1.16 KB, created by Fabian Keil on 2017-09-01 10:09:30 UTC

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Creator: Fabian Keil

Created: 2017-09-01 10:09:30 UTC

Size: 1.16 KB

patch

obsolete

>From 93804ac316f708e322f0ee3ece0ea758905ad78d Mon Sep 17 00:00:00 2001
>From: Fabian Keil <fk@fabiankeil.de>
>Date: Thu, 10 Aug 2017 09:37:24 +0200
>Subject: [PATCH 6/8] cam iosched: Use the write queue for BIO_ZONE commands
>
>... so they can't get executed ahead of writes that were sent
>after them.
>
>As a side effect this prevents the kernel message:
>kernel: Found bio_cmd = 0x9
>which cam_iosched_next_bio() emits when finding commands
>other than BIO_READ in the read queue.
>
>Obtained from: ElectroBSD
>---
> sys/cam/cam_iosched.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
>diff --git a/sys/cam/cam_iosched.c b/sys/cam/cam_iosched.c
>index 7f04db03352e..77ad53269cd2 100644
>--- a/sys/cam/cam_iosched.c
>+++ b/sys/cam/cam_iosched.c
>@@ -1364,8 +1364,8 @@ cam_iosched_queue_work(struct cam_iosched_softc *isc, struct bio *bp)
> #endif
> 	}
> #ifdef CAM_IOSCHED_DYNAMIC
>-	else if (do_dynamic_iosched &&
>-	    (bp->bio_cmd == BIO_WRITE || bp->bio_cmd == BIO_FLUSH)) {
>+	else if (do_dynamic_iosched && (bp->bio_cmd == BIO_WRITE ||
>+	    bp->bio_cmd == BIO_FLUSH || bp->bio_cmd == BIO_ZONE)) {
> 		if (cam_iosched_sort_queue(isc))
> 			bioq_disksort(&isc->write_queue, bp);
> 		else
>-- 
>2.14.1
>

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Attachments on bug 221973: 185970