From: Ming Lei <ming.lei@canonical.com>
To: Jens Axboe <axboe@kernel.dk>, linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Zach Brown <zab@zabbo.net>,
Dave Kleikamp <dave.kleikamp@oracle.com>,
Benjamin LaHaise <bcrl@kvack.org>,
Ming Lei <ming.lei@canonical.com>
Subject: [PATCH 1/9] blk-mq: export blk_mq_freeze_queue and blk_mq_unfreeze_queue
Date: Thu, 24 Jul 2014 06:55:22 +0800 [thread overview]
Message-ID: <1406156130-15575-2-git-send-email-ming.lei@canonical.com> (raw)
In-Reply-To: <1406156130-15575-1-git-send-email-ming.lei@canonical.com>
It is handy to use the two helpers for switching backend file
in loop driver, so export them.
Signed-off-by: Ming Lei <ming.lei@canonical.com>
---
block/blk-mq.c | 4 +++-
block/blk-mq.h | 1 -
include/linux/blk-mq.h | 2 ++
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5189cb1..07e1033 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -120,8 +120,9 @@ void blk_mq_freeze_queue(struct request_queue *q)
blk_mq_run_queues(q, false);
wait_event(q->mq_freeze_wq, percpu_ref_is_zero(&q->mq_usage_counter));
}
+EXPORT_SYMBOL(blk_mq_freeze_queue);
-static void blk_mq_unfreeze_queue(struct request_queue *q)
+void blk_mq_unfreeze_queue(struct request_queue *q)
{
bool wake = false;
@@ -134,6 +135,7 @@ static void blk_mq_unfreeze_queue(struct request_queue *q)
wake_up_all(&q->mq_freeze_wq);
}
}
+EXPORT_SYMBOL(blk_mq_unfreeze_queue);
bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
{
diff --git a/block/blk-mq.h b/block/blk-mq.h
index ca4964a..3800316 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -28,7 +28,6 @@ struct blk_mq_ctx {
void __blk_mq_complete_request(struct request *rq);
void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
void blk_mq_init_flush(struct request_queue *q);
-void blk_mq_freeze_queue(struct request_queue *q);
void blk_mq_free_queue(struct request_queue *q);
void blk_mq_clone_flush_request(struct request *flush_rq,
struct request *orig_rq);
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index eb726b9..1cc1baa 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -175,6 +175,8 @@ void blk_mq_start_hw_queues(struct request_queue *q);
void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async);
void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
void blk_mq_tag_busy_iter(struct blk_mq_tags *tags, void (*fn)(void *data, unsigned long *), void *data);
+void blk_mq_freeze_queue(struct request_queue *q);
+void blk_mq_unfreeze_queue(struct request_queue *q);
/*
* Driver command data is immediately after the request. So subtract request
--
1.7.9.5
next prev parent reply other threads:[~2014-07-23 22:56 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-23 22:55 [PATCH 0/9] block/aio: loop mq conversion and kernel aio Ming Lei
2014-07-23 22:55 ` Ming Lei [this message]
2014-07-23 22:55 ` [PATCH 2/9] blk-mq: introduce init_flush_rq_fn callback in 'blk_mq_ops' Ming Lei
2014-07-23 22:55 ` [PATCH 3/9] block: loop: convert to blk-mq Ming Lei
2014-07-23 22:55 ` [PATCH 4/9] block: loop: say goodby to bio Ming Lei
2014-07-23 22:55 ` [PATCH 5/9] block: loop: introduce lo_discard() and lo_req_flush() Ming Lei
2014-07-23 22:55 ` [PATCH 6/9] block: loop: don't handle REQ_FUA explicitly Ming Lei
2014-07-23 22:55 ` [PATCH 7/9] aio: add aio_kernel_() interface Ming Lei
2014-07-23 23:16 ` Zach Brown
2014-07-24 1:57 ` Ming Lei
[not found] ` <53D12343.8050507@oracle.com>
2014-07-25 1:25 ` Ming Lei
2014-07-23 22:55 ` [PATCH 8/9] fd/direct-io: introduce should_dirty for kernel aio Ming Lei
2014-07-23 22:55 ` [PATCH 9/9] block: loop: support to submit I/O via kernel aio based Ming Lei
2014-07-24 3:08 ` Ming Lei
2014-08-06 11:58 ` [PATCH 0/9] block/aio: loop mq conversion and kernel aio Ming Lei
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1406156130-15575-2-git-send-email-ming.lei@canonical.com \
--to=ming.lei@canonical.com \
--cc=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=bcrl@kvack.org \
--cc=dave.kleikamp@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=zab@zabbo.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®