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| author | Bart Van Assche <bart.vanassche@wdc.com> | 2018-03-07 17:10:04 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-03-08 14:13:48 -0700 |
| commit | 8814ce8a0f680599a837af18aefdec774e5c7b97 (patch) | |
| tree | 1f825afafde21e04bd53a20c23e0fb83eeb84347 /block/blk-sysfs.c | |
| parent | f78bac2c8e69144781e271d9771bae8dbb4e7098 (diff) | |
| download | linux-8814ce8a0f680599a837af18aefdec774e5c7b97.tar.gz linux-8814ce8a0f680599a837af18aefdec774e5c7b97.tar.bz2 linux-8814ce8a0f680599a837af18aefdec774e5c7b97.zip | |
block: Introduce blk_queue_flag_{set,clear,test_and_{set,clear}}()
Introduce functions that modify the queue flags and that protect
these modifications with the request queue lock. Except for moving
one wake_up_all() call from inside to outside a critical section,
this patch does not change any functionality.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-sysfs.c')
| -rw-r--r-- | block/blk-sysfs.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index fd71a00c9462..d00d1b0ec109 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -276,12 +276,10 @@ queue_store_##name(struct request_queue *q, const char *page, size_t count) \ if (neg) \ val = !val; \ \ - spin_lock_irq(q->queue_lock); \ if (val) \ - queue_flag_set(QUEUE_FLAG_##flag, q); \ + blk_queue_flag_set(QUEUE_FLAG_##flag, q); \ else \ - queue_flag_clear(QUEUE_FLAG_##flag, q); \ - spin_unlock_irq(q->queue_lock); \ + blk_queue_flag_clear(QUEUE_FLAG_##flag, q); \ return ret; \ } @@ -414,12 +412,10 @@ static ssize_t queue_poll_store(struct request_queue *q, const char *page, if (ret < 0) return ret; - spin_lock_irq(q->queue_lock); if (poll_on) - queue_flag_set(QUEUE_FLAG_POLL, q); + blk_queue_flag_set(QUEUE_FLAG_POLL, q); else - queue_flag_clear(QUEUE_FLAG_POLL, q); - spin_unlock_irq(q->queue_lock); + blk_queue_flag_clear(QUEUE_FLAG_POLL, q); return ret; } @@ -487,12 +483,10 @@ static ssize_t queue_wc_store(struct request_queue *q, const char *page, if (set == -1) return -EINVAL; - spin_lock_irq(q->queue_lock); if (set) - queue_flag_set(QUEUE_FLAG_WC, q); + blk_queue_flag_set(QUEUE_FLAG_WC, q); else - queue_flag_clear(QUEUE_FLAG_WC, q); - spin_unlock_irq(q->queue_lock); + blk_queue_flag_clear(QUEUE_FLAG_WC, q); return count; } @@ -946,9 +940,7 @@ void blk_unregister_queue(struct gendisk *disk) */ mutex_lock(&q->sysfs_lock); - spin_lock_irq(q->queue_lock); - queue_flag_clear(QUEUE_FLAG_REGISTERED, q); - spin_unlock_irq(q->queue_lock); + blk_queue_flag_clear(QUEUE_FLAG_REGISTERED, q); /* * Remove the sysfs attributes before unregistering the queue data |