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| author | Christoph Hellwig <hch@lst.de> | 2022-07-27 18:22:59 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-03 05:08:53 +0200 |
| commit | b6dc6198ebe855d70e6f68d279c4015fe5d73e7b (patch) | |
| tree | fb7ffa213e252d25d720ff4bfa7f8ef076cefa9a /block/blk-merge.c | |
| parent | block: move the call to get_max_io_size out of blk_bio_segment_split (diff) | |
| download | linux-b6dc6198ebe855d70e6f68d279c4015fe5d73e7b.tar.xz linux-b6dc6198ebe855d70e6f68d279c4015fe5d73e7b.zip | |
block: move bio_allowed_max_sectors to blk-merge.c
Move this helper into the only file where it is used.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20220727162300.3089193-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index ce73b3b6c2a7..c2bf8723f30c 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -95,6 +95,16 @@ static inline bool req_gap_front_merge(struct request *req, struct bio *bio) return bio_will_gap(req->q, NULL, bio, req->bio); } +/* + * The max size one bio can handle is UINT_MAX becasue bvec_iter.bi_size + * is defined as 'unsigned int', meantime it has to be aligned to with the + * logical block size, which is the minimum accepted unit by hardware. + */ +static unsigned int bio_allowed_max_sectors(struct request_queue *q) +{ + return round_down(UINT_MAX, queue_logical_block_size(q)) >> 9; +} + static struct bio *bio_split_discard(struct bio *bio, struct request_queue *q, unsigned *nsegs, struct bio_set *bs) { |