btrfs: cleanup merging conditions in submit_extent_page
The merge call was factored out to a separate helper but it's a trivial
one and arguably we can opencode it and cache the value.
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0794898..fecf1e5 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2744,18 +2744,6 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
return blk_status_to_errno(ret);
}
-static int merge_bio(struct extent_io_tree *tree, struct page *page,
- unsigned long offset, size_t size, struct bio *bio,
- unsigned long bio_flags)
-{
- int ret = 0;
- if (tree->ops)
- ret = tree->ops->merge_bio_hook(page, offset, size, bio,
- bio_flags);
- return ret;
-
-}
-
/*
* @opf: bio REQ_OP_* and REQ_* flags as one value
* @bio_ret: must be valid pointer, newly allocated bio will be stored there
@@ -2774,23 +2762,27 @@ static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree,
{
int ret = 0;
struct bio *bio;
- int contig = 0;
- int old_compressed = prev_bio_flags & EXTENT_BIO_COMPRESSED;
size_t page_size = min_t(size_t, size, PAGE_SIZE);
sector_t sector = offset >> 9;
ASSERT(bio_ret);
if (*bio_ret) {
+ bool contig;
+ bool can_merge = true;
+
bio = *bio_ret;
- if (old_compressed)
+ if (prev_bio_flags & EXTENT_BIO_COMPRESSED)
contig = bio->bi_iter.bi_sector == sector;
else
contig = bio_end_sector(bio) == sector;
- if (prev_bio_flags != bio_flags || !contig ||
+ if (tree->ops && tree->ops->merge_bio_hook(page, offset,
+ page_size, bio, bio_flags))
+ can_merge = false;
+
+ if (prev_bio_flags != bio_flags || !contig || !can_merge ||
force_bio_submit ||
- merge_bio(tree, page, pg_offset, page_size, bio, bio_flags) ||
bio_add_page(bio, page, page_size, pg_offset) < page_size) {
ret = submit_one_bio(bio, mirror_num, prev_bio_flags);
if (ret < 0) {