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block: check that there is a plug in blk_flush_plug

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Rename blk_flush_plug to __blk_flush_plug and add a wrapper that includes
the NULL check instead of open coding that check everywhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220127070549.1377856-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-01-27 08:05:49 +01:00 • committed by Jens Axboe
parent b1f866b013
commit aa8dcccaf3
4 changed files with 13 additions and 14 deletions
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7
include/linux/blkdev.h
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@ -1053,7 +1053,12 @@ extern void blk_start_plug(struct blk_plug *);
extern void blk_start_plug_nr_ios(struct blk_plug *, unsigned short);
extern void blk_finish_plug(struct blk_plug *);
void blk_flush_plug(struct blk_plug *plug, bool from_schedule);
void __blk_flush_plug(struct blk_plug *plug, bool from_schedule);
static inline void blk_flush_plug(struct blk_plug *plug, bool async)
{
if (plug)
__blk_flush_plug(plug, async);
}
int blkdev_issue_flush(struct block_device *bdev);
long nr_blockdev_pages(void);