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block: add a bio_list_merge_init helper

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This is a simple combination of bio_list_merge + bio_list_init
similar to list_splice_init.  While it only saves a single
line in a callers, it makes the move all bios from one list to
another and reinitialize the original pattern a lot more obvious
in the callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Matthew Sakai <msakai@redhat.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20240328084147.2954434-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-03-28 09:41:44 +01:00 committed by Jens Axboe
parent d3a3a086ad
commit c9418adfba
1 changed files with 7 additions and 0 deletions
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7
include/linux/bio.h
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@ -615,6 +615,13 @@ static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
bl->tail = bl2->tail;
}
static inline void bio_list_merge_init(struct bio_list *bl,
struct bio_list *bl2)
{
bio_list_merge(bl, bl2);
bio_list_init(bl2);
}
static inline void bio_list_merge_head(struct bio_list *bl,
struct bio_list *bl2)
{