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block: move bio_associate_blkg_from_page to mm/page_io.c

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bio_associate_blkg_from_page is a special purpose helper for swap bios
that doesn't need access to bio internals.  Move it to the swap code
instead of having it in bio.c.

Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-06-27 09:31:50 +02:00
committed by Jens Axboe
parent 2badf06cf9
commit a18b9b1590
3 changed files with 17 additions and 33 deletions
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7
include/linux/bio.h
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@@ -489,13 +489,6 @@ do { \
#define bio_dev(bio) \
disk_devt((bio)->bi_disk)
#if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
void bio_associate_blkg_from_page(struct bio *bio, struct page *page);
#else
static inline void bio_associate_blkg_from_page(struct bio *bio,
struct page *page) { }
#endif
#ifdef CONFIG_BLK_CGROUP
void bio_associate_blkg(struct bio *bio);
void bio_associate_blkg_from_css(struct bio *bio,