diff options
| author | Christoph Hellwig <hch@lst.de> | 2026-02-23 16:20:13 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-03-10 12:29:03 +0300 |
| commit | 57287771fa8d77841149bf847b629f29acbad35b (patch) | |
| tree | b0e6135b94098a539a4f33ec815281724c69ee56 | |
| parent | 6810365c0d1b31e53777d993e61d7fdd3f5f4af5 (diff) | |
| download | linux-57287771fa8d77841149bf847b629f29acbad35b.tar.xz | |
iomap: add a bioset pointer to iomap_read_folio_ops
Optionally allocate the bio from the bioset provided in
iomap_read_folio_ops. If no bioset is provided, fs_bio_set is still
used, which is the standard bioset for file systems.
Based on a patch from Goldwyn Rodrigues <rgoldwyn@suse.com>.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260223132021.292832-14-hch@lst.de
Tested-by: Anuj Gupta <anuj20.g@samsung.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/iomap/bio.c | 14 | ||||
| -rw-r--r-- | include/linux/iomap.h | 6 |
2 files changed, 18 insertions, 2 deletions
diff --git a/fs/iomap/bio.c b/fs/iomap/bio.c index 903cb9fe759e..259a2bf95a43 100644 --- a/fs/iomap/bio.c +++ b/fs/iomap/bio.c @@ -24,11 +24,19 @@ static void iomap_bio_submit_read(const struct iomap_iter *iter, submit_bio(ctx->read_ctx); } +static struct bio_set *iomap_read_bio_set(struct iomap_read_folio_ctx *ctx) +{ + if (ctx->ops && ctx->ops->bio_set) + return ctx->ops->bio_set; + return &fs_bio_set; +} + static void iomap_read_alloc_bio(const struct iomap_iter *iter, struct iomap_read_folio_ctx *ctx, size_t plen) { const struct iomap *iomap = &iter->iomap; unsigned int nr_vecs = DIV_ROUND_UP(iomap_length(iter), PAGE_SIZE); + struct bio_set *bio_set = iomap_read_bio_set(ctx); struct folio *folio = ctx->cur_folio; gfp_t gfp = mapping_gfp_constraint(folio->mapping, GFP_KERNEL); gfp_t orig_gfp = gfp; @@ -47,9 +55,11 @@ static void iomap_read_alloc_bio(const struct iomap_iter *iter, * having to deal with partial page reads. This emulates what * do_mpage_read_folio does. */ - bio = bio_alloc(iomap->bdev, bio_max_segs(nr_vecs), REQ_OP_READ, gfp); + bio = bio_alloc_bioset(iomap->bdev, bio_max_segs(nr_vecs), REQ_OP_READ, + gfp, bio_set); if (!bio) - bio = bio_alloc(iomap->bdev, 1, REQ_OP_READ, orig_gfp); + bio = bio_alloc_bioset(iomap->bdev, 1, REQ_OP_READ, orig_gfp, + bio_set); if (ctx->rac) bio->bi_opf |= REQ_RAHEAD; bio->bi_iter.bi_sector = iomap_sector(iomap, iter->pos); diff --git a/include/linux/iomap.h b/include/linux/iomap.h index b2b9e649a3b8..387a1174522f 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -515,6 +515,12 @@ struct iomap_read_ops { */ void (*submit_read)(const struct iomap_iter *iter, struct iomap_read_folio_ctx *ctx); + + /* + * Optional, allows filesystem to specify own bio_set, so new bio's + * can be allocated from the provided bio_set. + */ + struct bio_set *bio_set; }; /* |