block: correct the blk drain name comment

From: Weng Meiling
Date: Mon May 12 2014 - 05:39:50 EST


After patch commit 807592a4fafb("block: Let blk_drain_queue() caller
obtain the queue lock") the function blk_drain_queue() had been renamed
to __blk_drain_queue(), so correct the related comments.

Signed-off-by: Qiang Huang <h.huangqiang@xxxxxxxxxx>
---
block/blk-cgroup.c | 2 +-
block/blk-core.c | 2 +-
include/linux/blkdev.h | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index e4a4145..8234eb1 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -856,7 +856,7 @@ int blkcg_init_queue(struct request_queue *q)
* blkcg_drain_queue - drain blkcg part of request_queue
* @q: request_queue to drain
*
- * Called from blk_drain_queue(). Responsible for draining blkcg part.
+ * Called from __blk_drain_queue(). Responsible for draining blkcg part.
*/
void blkcg_drain_queue(struct request_queue *q)
{
diff --git a/block/blk-core.c b/block/blk-core.c
index a0e3096..f62d8a0 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -279,7 +279,7 @@ inline void __blk_run_queue_uncond(struct request_queue *q)
* Some request_fn implementations, e.g. scsi_request_fn(), unlock
* the queue lock internally. As a result multiple threads may be
* running such a request function concurrently. Keep track of the
- * number of active request_fn invocations such that blk_drain_queue()
+ * number of active request_fn invocations such that __blk_drain_queue()
* can wait until all these request_fn calls have finished.
*/
q->request_fn_active++;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0d84981..4835cc9 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -421,7 +421,7 @@ struct request_queue {
unsigned int nr_sorted;
unsigned int in_flight[2];
/*
- * Number of active block driver functions for which blk_drain_queue()
+ * Number of active block driver functions for which __blk_drain_queue()
* must wait. Must be incremented around functions that unlock the
* queue_lock internally, e.g. scsi_request_fn().
*/
--
1.8.3

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