From: Ming Lei <tom.leiming@gmail.com>
To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Ming Lei <tom.leiming@gmail.com>, Shaohua Li <shli@kernel.org>,
"open list:SOFTWARE RAID Multiple Disks SUPPORT"
<linux-raid@vger.kernel.org>
Subject: [PATCH 24/60] md: set NO_MP for request queue of md
Date: Sat, 29 Oct 2016 16:08:23 +0800 [thread overview]
Message-ID: <1477728600-12938-25-git-send-email-tom.leiming@gmail.com> (raw)
In-Reply-To: <1477728600-12938-1-git-send-email-tom.leiming@gmail.com>
MD isn't ready for multipage bvecs, so mark it as
NO_MP.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
drivers/md/md.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index eac84d8ff724..f8d98098dff8 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5128,6 +5128,16 @@ static void md_safemode_timeout(unsigned long data)
static int start_dirty_degraded;
+/*
+ * MD isn't ready for multipage bvecs yet, and set the flag
+ * so that MD still can see singlepage bvecs bio
+ */
+static inline void md_set_no_mp(struct mddev *mddev)
+{
+ if (mddev->queue)
+ set_bit(QUEUE_FLAG_NO_MP, &mddev->queue->queue_flags);
+}
+
int md_run(struct mddev *mddev)
{
int err;
@@ -5353,6 +5363,8 @@ int md_run(struct mddev *mddev)
if (mddev->flags & MD_UPDATE_SB_FLAGS)
md_update_sb(mddev, 0);
+ md_set_no_mp(mddev);
+
md_new_event(mddev);
sysfs_notify_dirent_safe(mddev->sysfs_state);
sysfs_notify_dirent_safe(mddev->sysfs_action);
--
2.7.4
next prev parent reply other threads:[~2016-10-29 8:08 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-29 8:07 [PATCH 00/60] block: support multipage bvec Ming Lei
2016-10-29 8:08 ` [PATCH 02/60] block drivers: convert to bio_init_with_vec_table() Ming Lei
2016-10-29 8:08 ` [PATCH 06/60] bcache: debug: avoid to access .bi_io_vec directly Ming Lei
2016-10-29 8:08 ` [PATCH 07/60] dm: crypt: use bio_add_page() Ming Lei
2016-10-29 8:08 ` [PATCH 08/60] dm: use bvec iterator helpers to implement .get_page and .next_page Ming Lei
2016-10-29 8:08 ` [PATCH 09/60] dm: dm.c: replace 'bio->bi_vcnt == 1' with !bio_multiple_segments Ming Lei
2016-10-31 15:29 ` Christoph Hellwig
2016-10-31 22:59 ` Ming Lei
2016-11-02 3:09 ` Kent Overstreet
2016-11-02 7:56 ` Ming Lei
2016-11-02 14:24 ` Mike Snitzer
2016-11-02 23:47 ` Ming Lei
2016-10-29 8:08 ` [PATCH 21/60] bcache: comment on direct access to bvec table Ming Lei
2016-10-29 8:08 ` [PATCH 22/60] block: comment on bio_alloc_pages() Ming Lei
2016-10-29 8:08 ` Ming Lei [this message]
2016-10-29 8:08 ` [PATCH 29/60] dm: limit the max bio size as BIO_SP_MAX_SECTORS << SECTOR_SHIFT Ming Lei
2016-10-29 8:08 ` [PATCH 30/60] bcache: set flag of QUEUE_FLAG_SPLIT_MP Ming Lei
2016-10-29 8:08 ` [PATCH 39/60] bcache: debug: switch to bio_clone_sp() Ming Lei
2016-10-29 8:08 ` [PATCH 57/60] bcache: convert to bio_for_each_segment_all_rd() Ming Lei
2016-10-29 8:08 ` [PATCH 58/60] dm-crypt: " Ming Lei
[not found] ` <1477728600-12938-24-git-send-email-tom.leiming@gmail.com>
2016-10-29 15:29 ` [PATCH 23/60] block: introduce flag QUEUE_FLAG_NO_MP Christoph Hellwig
2016-10-29 22:20 ` Ming Lei
2016-10-31 15:25 ` [PATCH 00/60] block: support multipage bvec Christoph Hellwig
2016-10-31 22:52 ` Ming Lei
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