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From: Christoph Hellwig <hch@lst.de>
To: Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
	David Sterba <dsterba@suse.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>,
	Naohiro Aota <naohiro.aota@wdc.com>,
	Johannes Thumshirn <johannes.thumshirn@wdc.com>,
	Qu Wenruo <wqu@suse.com>, Jens Axboe <axboe@kernel.dk>,
	"Darrick J. Wong" <djwong@kernel.org>,
	linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH 07/19] btrfs: support cloned bios in btree_csum_one_bio
Date: Sun, 20 Nov 2022 13:47:22 +0100	[thread overview]
Message-ID: <20221120124734.18634-8-hch@lst.de> (raw)
In-Reply-To: <20221120124734.18634-1-hch@lst.de>

To allow splitting bios in btrfs_submit_bio, btree_csum_one_bio needs to
be able to handle cloned bios.  As btree_csum_one_bio is always called
before handing the bio to the block layer that is trivially done by using
bio_for_each_segment instead of bio_for_each_segment_all.  Also switch
the function to take a btrfs_bio and use that to derive the fs_info.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/btrfs/bio.c     |  2 +-
 fs/btrfs/disk-io.c | 14 ++++++--------
 fs/btrfs/disk-io.h |  2 +-
 3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c
index 5978b795bf710..4979cf74da624 100644
--- a/fs/btrfs/bio.c
+++ b/fs/btrfs/bio.c
@@ -440,7 +440,7 @@ static void __btrfs_submit_bio(struct bio *bio, struct btrfs_io_context *bioc,
 static blk_status_t btrfs_bio_csum(struct btrfs_bio *bbio)
 {
 	if (bbio->bio.bi_opf & REQ_META)
-		return btree_csum_one_bio(&bbio->bio);
+		return btree_csum_one_bio(bbio);
 	return btrfs_csum_one_bio(bbio);
 }
 
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 2018d1b9ff3a5..c8b6ef511942c 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -431,17 +431,15 @@ static int csum_dirty_buffer(struct btrfs_fs_info *fs_info, struct bio_vec *bvec
 	return csum_one_extent_buffer(eb);
 }
 
-blk_status_t btree_csum_one_bio(struct bio *bio)
+blk_status_t btree_csum_one_bio(struct btrfs_bio *bbio)
 {
-	struct bio_vec *bvec;
-	struct btrfs_root *root;
+	struct btrfs_fs_info *fs_info = bbio->inode->root->fs_info;
+	struct bvec_iter iter;
+	struct bio_vec bv;
 	int ret = 0;
-	struct bvec_iter_all iter_all;
 
-	ASSERT(!bio_flagged(bio, BIO_CLONED));
-	bio_for_each_segment_all(bvec, bio, iter_all) {
-		root = BTRFS_I(bvec->bv_page->mapping->host)->root;
-		ret = csum_dirty_buffer(root->fs_info, bvec);
+	bio_for_each_segment(bv, &bbio->bio, iter) {
+		ret = csum_dirty_buffer(fs_info, &bv);
 		if (ret)
 			break;
 	}
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 1e04ecc43a2ab..101260f57e816 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -114,7 +114,7 @@ int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
 int btrfs_read_extent_buffer(struct extent_buffer *buf,
 			     struct btrfs_tree_parent_check *check);
 
-blk_status_t btree_csum_one_bio(struct bio *bio);
+blk_status_t btree_csum_one_bio(struct btrfs_bio *bbio);
 int btrfs_alloc_log_tree_node(struct btrfs_trans_handle *trans,
 			      struct btrfs_root *root);
 int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
-- 
2.30.2


  parent reply	other threads:[~2022-11-20 12:48 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-20 12:47 consolidate btrfs checksumming, repair and bio splitting v2 Christoph Hellwig
2022-11-20 12:47 ` [PATCH 01/19] block: export bio_split_rw Christoph Hellwig
2022-11-23 22:44   ` Chaitanya Kulkarni
2022-11-20 12:47 ` [PATCH 02/19] btrfs: handle checksum validation and repair at the storage layer Christoph Hellwig
2022-12-06 11:04   ` Johannes Thumshirn
2022-12-12 22:13   ` David Sterba
2022-12-13  5:53     ` Christoph Hellwig
2022-11-20 12:47 ` [PATCH 03/19] btrfs: remove the submit_bio_start helpers Christoph Hellwig
2022-12-06 11:13   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 04/19] btrfs: simplify the btrfs_csum_one_bio calling convention Christoph Hellwig
2022-12-06 11:16   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 05/19] btrfs: handle checksum generation in the storage layer Christoph Hellwig
2022-12-06 11:21   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 06/19] btrfs: handle recording of zoned writes " Christoph Hellwig
2022-11-20 12:47 ` Christoph Hellwig [this message]
2022-12-06 11:23   ` [PATCH 07/19] btrfs: support cloned bios in btree_csum_one_bio Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 08/19] btrfs: allow btrfs_submit_bio to split bios Christoph Hellwig
2022-11-20 12:47 ` [PATCH 09/19] btrfs: pass the iomap bio to btrfs_submit_bio Christoph Hellwig
2022-12-06 11:27   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 10/19] btrfs: remove stripe boundary calculation for buffered I/O Christoph Hellwig
2022-12-06 11:29   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 11/19] btrfs: remove stripe boundary calculation for compressed I/O Christoph Hellwig
2022-11-20 12:47 ` [PATCH 12/19] btrfs: remove stripe boundary calculation for encoded I/O Christoph Hellwig
2022-11-20 12:47 ` [PATCH 13/19] btrfs: remove struct btrfs_io_geometry Christoph Hellwig
2022-12-06 11:41   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 14/19] btrfs: remove submit_encoded_read_bio Christoph Hellwig
2022-11-20 12:47 ` [PATCH 15/19] btrfs: remove the fs_info argument to btrfs_submit_bio Christoph Hellwig
2022-12-06 11:42   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 16/19] btrfs: remove now spurious bio submission helpers Christoph Hellwig
2022-11-20 12:47 ` [PATCH 17/19] btrfs: calculate file system wide queue limit for zoned mode Christoph Hellwig
2022-12-06 11:46   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 18/19] btrfs: split zone append bios in btrfs_submit_bio Christoph Hellwig
2022-12-06 11:51   ` Johannes Thumshirn
2022-11-20 12:47 ` [PATCH 19/19] iomap: remove IOMAP_F_ZONE_APPEND Christoph Hellwig
2022-11-21 17:07   ` Darrick J. Wong
2022-11-23 22:44   ` Chaitanya Kulkarni
2022-12-12 18:46 ` consolidate btrfs checksumming, repair and bio splitting v2 Josef Bacik
2023-01-12  9:05 consolidate btrfs checksumming, repair and bio splitting v3 Christoph Hellwig
2023-01-12  9:05 ` [PATCH 07/19] btrfs: support cloned bios in btree_csum_one_bio Christoph Hellwig

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