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@xxxxxx>
---
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
