From: hch@lst.de (Christoph Hellwig)
Subject: [PATCH 05/47] block: remoe REQ_ATOM_COMPLETE wrappers
Date: Fri, 20 Nov 2015 17:35:00 +0100 [thread overview]
Message-ID: <1448037342-18384-6-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1448037342-18384-1-git-send-email-hch@lst.de>
We only use them inconsistenly, and the other flags don't use wrappers like
this either.
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
block/blk-core.c | 2 +-
block/blk-mq.c | 6 +++---
block/blk-softirq.c | 2 +-
block/blk-timeout.c | 6 +++---
block/blk.h | 18 ++++--------------
5 files changed, 12 insertions(+), 22 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 1de0974..af9c315 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1375,7 +1375,7 @@ EXPORT_SYMBOL(blk_rq_set_block_pc);
void blk_requeue_request(struct request_queue *q, struct request *rq)
{
blk_delete_timer(rq);
- blk_clear_rq_complete(rq);
+ clear_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags);
trace_block_rq_requeue(q, rq);
if (rq->cmd_flags & REQ_QUEUED)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 76773dc..c932605 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -383,7 +383,7 @@ void blk_mq_complete_request(struct request *rq, int error)
if (unlikely(blk_should_fake_timeout(q)))
return;
- if (!blk_mark_rq_complete(rq) ||
+ if (!test_and_set_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags) ||
test_and_clear_bit(REQ_ATOM_QUIESCED, &rq->atomic_flags)) {
rq->errors = error;
__blk_mq_complete_request(rq);
@@ -583,7 +583,7 @@ void blk_mq_rq_timed_out(struct request *req, bool reserved)
break;
case BLK_EH_RESET_TIMER:
blk_add_timer(req);
- blk_clear_rq_complete(req);
+ clear_bit(REQ_ATOM_COMPLETE, &req->atomic_flags);
break;
case BLK_EH_NOT_HANDLED:
break;
@@ -614,7 +614,7 @@ static void blk_mq_check_expired(struct blk_mq_hw_ctx *hctx,
return;
if (time_after_eq(jiffies, rq->deadline)) {
- if (!blk_mark_rq_complete(rq))
+ if (!test_and_set_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags))
blk_mq_rq_timed_out(rq, reserved);
} else if (!data->next_set || time_after(data->next, rq->deadline)) {
data->next = rq->deadline;
diff --git a/block/blk-softirq.c b/block/blk-softirq.c
index 9d47fbc..b89f655 100644
--- a/block/blk-softirq.c
+++ b/block/blk-softirq.c
@@ -167,7 +167,7 @@ void blk_complete_request(struct request *req)
{
if (unlikely(blk_should_fake_timeout(req->q)))
return;
- if (!blk_mark_rq_complete(req) ||
+ if (!test_and_set_bit(REQ_ATOM_COMPLETE, &req->atomic_flags) ||
test_and_clear_bit(REQ_ATOM_QUIESCED, &req->atomic_flags))
__blk_complete_request(req);
}
diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index b3a7f20..cc10db2 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -94,7 +94,7 @@ static void blk_rq_timed_out(struct request *req)
break;
case BLK_EH_RESET_TIMER:
blk_add_timer(req);
- blk_clear_rq_complete(req);
+ clear_bit(REQ_ATOM_COMPLETE, &req->atomic_flags);
break;
case BLK_EH_QUIESCED:
set_bit(REQ_ATOM_QUIESCED, &req->atomic_flags);
@@ -122,7 +122,7 @@ static void blk_rq_check_expired(struct request *rq, unsigned long *next_timeout
/*
* Check if we raced with end io completion
*/
- if (!blk_mark_rq_complete(rq))
+ if (!test_and_set_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags))
blk_rq_timed_out(rq);
} else if (!*next_set || time_after(*next_timeout, rq->deadline)) {
*next_timeout = rq->deadline;
@@ -160,7 +160,7 @@ void blk_timeout_work(struct work_struct *work)
*/
void blk_abort_request(struct request *req)
{
- if (blk_mark_rq_complete(req))
+ if (test_and_set_bit(REQ_ATOM_COMPLETE, &req->atomic_flags))
return;
if (req->q->mq_ops) {
diff --git a/block/blk.h b/block/blk.h
index f4c98f8..1d95107 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -118,26 +118,16 @@ void blk_account_io_done(struct request *req);
* Internal atomic flags for request handling
*/
enum rq_atomic_flags {
+ /*
+ * EH timer and IO completion will both attempt to 'grab' the request,
+ * make sure that only one of them succeeds by setting this flag.
+ */
REQ_ATOM_COMPLETE = 0,
REQ_ATOM_STARTED,
REQ_ATOM_QUIESCED,
};
/*
- * EH timer and IO completion will both attempt to 'grab' the request, make
- * sure that only one of them succeeds
- */
-static inline int blk_mark_rq_complete(struct request *rq)
-{
- return test_and_set_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags);
-}
-
-static inline void blk_clear_rq_complete(struct request *rq)
-{
- clear_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags);
-}
-
-/*
* Internal elevator interface
*/
#define ELV_ON_HASH(rq) ((rq)->cmd_flags & REQ_HASHED)
--
1.9.1
next prev parent reply other threads:[~2015-11-20 16:35 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-20 16:34 NVMe mega patchbomb for Linux 4.5-rc Christoph Hellwig
2015-11-20 16:34 ` [PATCH 01/47] nvme: add missing unmaps in nvme_queue_rq Christoph Hellwig
2015-11-20 16:34 ` [PATCH 02/47] block: fix blk_abort_request for blk-mq drivers Christoph Hellwig
2015-11-20 21:43 ` Jeff Moyer
2015-11-20 21:47 ` Jens Axboe
2015-11-20 21:54 ` Jeff Moyer
2015-11-20 22:20 ` Jeff Moyer
2015-11-21 7:34 ` Christoph Hellwig
2015-11-20 16:34 ` [PATCH 03/47] block: defer timeouts to a workqueue Christoph Hellwig
2015-11-23 20:31 ` Jeff Moyer
2015-11-23 20:48 ` Christoph Hellwig
2015-11-23 20:59 ` Jeff Moyer
2015-11-20 16:34 ` [PATCH 04/47] block: provide a new BLK_EH_QUIESCED timeout return value Christoph Hellwig
2015-11-24 15:16 ` Jeff Moyer
2015-11-24 15:40 ` Christoph Hellwig
2015-11-24 15:51 ` Jeff Moyer
2015-11-24 15:56 ` Christoph Hellwig
2015-11-24 16:34 ` Jeff Moyer
2015-11-24 16:47 ` Keith Busch
2015-11-24 17:56 ` Christoph Hellwig
2015-11-24 18:12 ` Jeff Moyer
2015-11-24 19:40 ` Christoph Hellwig
2015-11-20 16:35 ` Christoph Hellwig [this message]
2015-11-23 21:23 ` [PATCH 05/47] block: remoe REQ_ATOM_COMPLETE wrappers Jeff Moyer
2015-11-24 21:22 ` Jens Axboe
2015-11-20 16:35 ` [PATCH 06/47] blk-mq: add a flags parameter to blk_mq_alloc_request Christoph Hellwig
2015-11-24 15:19 ` Jeff Moyer
2015-11-24 15:32 ` Christoph Hellwig
2015-11-24 21:21 ` Jens Axboe
2015-11-24 22:22 ` Christoph Hellwig
2015-11-24 22:25 ` Jens Axboe
2015-11-20 16:35 ` [PATCH 07/47] nvme: move struct nvme_iod to pci.c Christoph Hellwig
2015-11-20 16:35 ` [PATCH 08/47] nvme: split command submission helpers out of pci.c Christoph Hellwig
2015-11-20 16:35 ` [PATCH 09/47] nvme: add a vendor field to struct nvme_dev Christoph Hellwig
2015-11-20 16:35 ` [PATCH 10/47] nvme: use offset instead of a struct for registers Christoph Hellwig
2015-11-20 16:35 ` [PATCH 11/47] nvme: split a new struct nvme_ctrl out of struct nvme_dev Christoph Hellwig
2015-11-20 16:35 ` [PATCH 12/47] nvme: simplify nvme_setup_prps calling convention Christoph Hellwig
2015-11-20 16:35 ` [PATCH 13/47] nvme: refactor nvme_queue_rq Christoph Hellwig
2015-11-20 16:35 ` [PATCH 14/47] nvme: move nvme_error_status to common code Christoph Hellwig
2015-11-20 16:35 ` [PATCH 15/47] nvme: move nvme_setup_flush and nvme_setup_rw " Christoph Hellwig
2015-11-20 16:35 ` [PATCH 16/47] nvme: split __nvme_submit_sync_cmd Christoph Hellwig
2015-11-20 16:35 ` [PATCH 17/47] nvme: use the block layer for userspace passthrough metadata Christoph Hellwig
2015-11-20 16:35 ` [PATCH 18/47] nvme: move block_device_operations and ns/ctrl freeing to common code Christoph Hellwig
2015-11-20 16:35 ` [PATCH 19/47] nvme: add explicit quirk handling Christoph Hellwig
2015-11-20 16:35 ` [PATCH 20/47] nvme: add a common helper to read Identify Controller data Christoph Hellwig
2015-11-20 16:35 ` [PATCH 21/47] nvme: move the call to nvme_init_identify earlier Christoph Hellwig
2015-11-20 16:35 ` [PATCH 22/47] nvme: move namespace scanning to common code Christoph Hellwig
2015-11-20 16:35 ` [PATCH 23/47] nvme: move chardev and sysfs interface " Christoph Hellwig
2015-11-20 16:35 ` [PATCH 24/47] nvme: only add a controller to dev_list after it's been fully initialized Christoph Hellwig
2015-11-20 16:35 ` [PATCH 25/47] nvme: don't take the I/O queue q_lock in nvme_timeout Christoph Hellwig
2017-03-10 12:51 ` David Woodhouse
2017-03-10 14:24 ` Christoph Hellwig
2015-11-20 16:35 ` [PATCH 26/47] nvme: merge nvme_abort_req and nvme_timeout Christoph Hellwig
2015-11-20 16:35 ` [PATCH 27/47] nvme: do not restart the request timeout if we're resetting the controller Christoph Hellwig
2015-11-20 16:35 ` [PATCH 28/47] nvme: simplify resets Christoph Hellwig
2015-11-20 16:35 ` [PATCH 29/47] nvme: merge probe_work and reset_work Christoph Hellwig
2015-11-20 16:35 ` [PATCH 30/47] nvme: remove dead controllers from a work item Christoph Hellwig
2015-11-20 16:35 ` [PATCH 31/47] nvme: switch abort_limit to an atomic_t Christoph Hellwig
2015-11-20 16:35 ` [PATCH 32/47] NVMe: Implement namespace list scanning Christoph Hellwig
2015-11-20 16:35 ` [PATCH 33/47] NVMe: Use unbounded work queue for all work Christoph Hellwig
2015-11-20 16:35 ` [PATCH 34/47] NVMe: Remove device management handles on remove Christoph Hellwig
2015-11-20 16:50 ` NVMe mega patchbomb for Linux 4.5-rc Christoph Hellwig
2015-11-21 7:19 NVMe mega patchbomb for Linux 4.5-rc (resend) Christoph Hellwig
2015-11-21 7:19 ` [PATCH 05/47] block: remoe REQ_ATOM_COMPLETE wrappers Christoph Hellwig
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