[PATCH] block: remove obsolete comments for blkdev_issue_zeroout.

[Tao Ma]

From: Tao Ma <boyu.mt@xxxxxxxxxx>

barrier is already removed, so remove the obsolete comments
in blkdev_issue_zeroout.

Cc: Jens Axboe <jaxboe@xxxxxxxxxxxx>
Signed-off-by: Tao Ma <boyu.mt@xxxxxxxxxx>
---
 block/blk-lib.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/block/blk-lib.c b/block/blk-lib.c
index 1a320d2..55da8bd 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -140,8 +140,6 @@ static void bio_batch_end_io(struct bio *bio, int err)
  *
  * Description:
  *  Generate and issue number of bios with zerofiled pages.
- *  Send barrier at the beginning and at the end if requested. This guarantie
- *  correct request ordering. Empty barrier allow us to avoid post queue flush.
  */
 
 int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
-- 
1.7.1

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