From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Ming Lei To: Jens Axboe , Christoph Hellwig , Alexander Viro , Kent Overstreet Cc: David Sterba , Huang Ying , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Theodore Ts'o , "Darrick J . Wong" , Coly Li , Filipe Manana , Randy Dunlap , Ming Lei Subject: [PATCH V6 18/30] block: convert to bio_for_each_chunk_segment_all() Date: Sat, 9 Jun 2018 20:30:02 +0800 Message-Id: <20180609123014.8861-19-ming.lei@redhat.com> In-Reply-To: <20180609123014.8861-1-ming.lei@redhat.com> References: <20180609123014.8861-1-ming.lei@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: We have to convert to bio_for_each_chunk_segment_all() for iterating page by page. bio_for_each_segment_all() can't be used any more after multipage bvec is enabled. Signed-off-by: Ming Lei --- block/bio.c | 27 ++++++++++++++++++--------- block/blk-zoned.c | 5 +++-- block/bounce.c | 6 ++++-- include/linux/bio.h | 3 ++- 4 files changed, 27 insertions(+), 14 deletions(-) diff --git a/block/bio.c b/block/bio.c index 60219f82ddab..276fc35ec559 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1146,8 +1146,9 @@ static int bio_copy_from_iter(struct bio *bio, struct iov_iter *iter) { int i; struct bio_vec *bvec; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { ssize_t ret; ret = copy_page_from_iter(bvec->bv_page, @@ -1177,8 +1178,9 @@ static int bio_copy_to_iter(struct bio *bio, struct iov_iter iter) { int i; struct bio_vec *bvec; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { ssize_t ret; ret = copy_page_to_iter(bvec->bv_page, @@ -1200,8 +1202,9 @@ void bio_free_pages(struct bio *bio) { struct bio_vec *bvec; int i; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) + bio_for_each_chunk_segment_all(bvec, bio, i, citer) __free_page(bvec->bv_page); } EXPORT_SYMBOL(bio_free_pages); @@ -1367,6 +1370,7 @@ struct bio *bio_map_user_iov(struct request_queue *q, struct bio *bio; int ret; struct bio_vec *bvec; + struct bvec_chunk_iter citer; if (!iov_iter_count(iter)) return ERR_PTR(-EINVAL); @@ -1440,7 +1444,7 @@ struct bio *bio_map_user_iov(struct request_queue *q, return bio; out_unmap: - bio_for_each_segment_all(bvec, bio, j) { + bio_for_each_chunk_segment_all(bvec, bio, j, citer) { put_page(bvec->bv_page); } bio_put(bio); @@ -1451,11 +1455,12 @@ static void __bio_unmap_user(struct bio *bio) { struct bio_vec *bvec; int i; + struct bvec_chunk_iter citer; /* * make sure we dirty pages we wrote to */ - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { if (bio_data_dir(bio) == READ) set_page_dirty_lock(bvec->bv_page); @@ -1547,8 +1552,9 @@ static void bio_copy_kern_endio_read(struct bio *bio) char *p = bio->bi_private; struct bio_vec *bvec; int i; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { memcpy(p, page_address(bvec->bv_page), bvec->bv_len); p += bvec->bv_len; } @@ -1657,8 +1663,9 @@ void bio_set_pages_dirty(struct bio *bio) { struct bio_vec *bvec; int i; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { if (!PageCompound(bvec->bv_page)) set_page_dirty_lock(bvec->bv_page); } @@ -1669,8 +1676,9 @@ static void bio_release_pages(struct bio *bio) { struct bio_vec *bvec; int i; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) + bio_for_each_chunk_segment_all(bvec, bio, i, citer) put_page(bvec->bv_page); } @@ -1717,8 +1725,9 @@ void bio_check_pages_dirty(struct bio *bio) struct bio_vec *bvec; unsigned long flags; int i; + struct bvec_chunk_iter citer; - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { if (!PageDirty(bvec->bv_page) && !PageCompound(bvec->bv_page)) goto defer; } diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 3d08dc84db16..9223666c845d 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -123,6 +123,7 @@ int blkdev_report_zones(struct block_device *bdev, unsigned int ofst; void *addr; int ret; + struct bvec_chunk_iter citer; if (!q) return -ENXIO; @@ -190,7 +191,7 @@ int blkdev_report_zones(struct block_device *bdev, n = 0; nz = 0; nr_rep = 0; - bio_for_each_segment_all(bv, bio, i) { + bio_for_each_chunk_segment_all(bv, bio, i, citer) { if (!bv->bv_page) break; @@ -223,7 +224,7 @@ int blkdev_report_zones(struct block_device *bdev, *nr_zones = nz; out: - bio_for_each_segment_all(bv, bio, i) + bio_for_each_chunk_segment_all(bv, bio, i, citer) __free_page(bv->bv_page); bio_put(bio); diff --git a/block/bounce.c b/block/bounce.c index fd31347b7836..c6af0bd29ec9 100644 --- a/block/bounce.c +++ b/block/bounce.c @@ -146,11 +146,12 @@ static void bounce_end_io(struct bio *bio, mempool_t *pool) struct bio_vec *bvec, orig_vec; int i; struct bvec_iter orig_iter = bio_orig->bi_iter; + struct bvec_chunk_iter citer; /* * free up bounce indirect pages used */ - bio_for_each_segment_all(bvec, bio, i) { + bio_for_each_chunk_segment_all(bvec, bio, i, citer) { orig_vec = bio_iter_iovec(bio_orig, orig_iter); if (bvec->bv_page != orig_vec.bv_page) { dec_zone_page_state(bvec->bv_page, NR_BOUNCE); @@ -206,6 +207,7 @@ static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig, bool bounce = false; int sectors = 0; bool passthrough = bio_is_passthrough(*bio_orig); + struct bvec_chunk_iter citer; bio_for_each_segment(from, *bio_orig, iter) { if (i++ < BIO_MAX_PAGES) @@ -225,7 +227,7 @@ static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig, bio = bio_clone_bioset(*bio_orig, GFP_NOIO, passthrough ? NULL : &bounce_bio_set); - bio_for_each_segment_all(to, bio, i) { + bio_for_each_chunk_segment_all(to, bio, i, citer) { struct page *page = to->bv_page; if (page_to_pfn(page) <= q->limits.bounce_pfn) diff --git a/include/linux/bio.h b/include/linux/bio.h index f21384be9b51..c22b8be961ce 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -374,10 +374,11 @@ static inline unsigned bio_pages_all(struct bio *bio) { unsigned i; struct bio_vec *bv; + struct bvec_chunk_iter citer; WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED)); - bio_for_each_segment_all(bv, bio, i) + bio_for_each_chunk_segment_all(bv, bio, i, citer) ; return i; } -- 2.9.5