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authorBart Van Assche <bart.vanassche@wdc.com>2018-03-07 17:10:04 -0800
committerJens Axboe <axboe@kernel.dk>2018-03-08 14:13:48 -0700
commit8814ce8a0f680599a837af18aefdec774e5c7b97 (patch)
tree1f825afafde21e04bd53a20c23e0fb83eeb84347 /block/blk-sysfs.c
parentf78bac2c8e69144781e271d9771bae8dbb4e7098 (diff)
downloadlinux-0-day-8814ce8a0f680599a837af18aefdec774e5c7b97.tar.gz
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.c22
1 files changed, 7 insertions, 15 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index fd71a00..d00d1b0 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