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block: align down bounces bios 

Just like for the extract user pages path, we need to align down the
size to the supported boundary.

Fixes: 8dd5e7c75d ("block: add helpers to bounce buffer an iov_iter into bios")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Link: https://patch.msgid.link/20260507050153.1298375-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
master
Christoph Hellwig 2026-05-07 07:01:48 +02:00 committed by Jens Axboe
parent 32d5019ed3
commit e7b8b3c5b2
1 changed files with 2 additions and 2 deletions
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4
block/bio.c
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@ -1345,7 +1345,7 @@ static int bio_iov_iter_bounce_write(struct bio *bio, struct iov_iter *iter,
if (!bio->bi_iter.bi_size) if (!bio->bi_iter.bi_size)
return -ENOMEM; return -ENOMEM;
return 0; return bio_iov_iter_align_down(bio, iter, minsize - 1);
} }
static int bio_iov_iter_bounce_read(struct bio *bio, struct iov_iter *iter, static int bio_iov_iter_bounce_read(struct bio *bio, struct iov_iter *iter,
@ -1383,7 +1383,7 @@ static int bio_iov_iter_bounce_read(struct bio *bio, struct iov_iter *iter,
bvec_set_folio(&bio->bi_io_vec[0], folio, bio->bi_iter.bi_size, 0); bvec_set_folio(&bio->bi_io_vec[0], folio, bio->bi_iter.bi_size, 0);
if (iov_iter_extract_will_pin(iter)) if (iov_iter_extract_will_pin(iter))
bio_set_flag(bio, BIO_PAGE_PINNED); bio_set_flag(bio, BIO_PAGE_PINNED);
return 0; return bio_iov_iter_align_down(bio, iter, minsize - 1);
} }
/** /**