btrfs: assume that bio_ret is always valid in submit_extent_page
All callers pass a valid pointer so we can drop the redundant checks.
The call to submit_one_bio never happend and can be removed.
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index da46e93..cf6253b 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2758,6 +2758,7 @@ static int merge_bio(struct extent_io_tree *tree, struct page *page,
/*
* @opf: bio REQ_OP_* and REQ_* flags as one value
+ * @bio_ret: must be valid pointer, newly allocated bio will be stored there
*/
static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree,
struct writeback_control *wbc,
@@ -2778,7 +2779,9 @@ static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree,
size_t page_size = min_t(size_t, size, PAGE_SIZE);
sector_t sector = offset >> 9;
- if (bio_ret && *bio_ret) {
+ ASSERT(bio_ret);
+
+ if (*bio_ret) {
bio = *bio_ret;
if (old_compressed)
contig = bio->bi_iter.bi_sector == sector;
@@ -2813,10 +2816,7 @@ static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree,
wbc_account_io(wbc, page, page_size);
}
- if (bio_ret)
- *bio_ret = bio;
- else
- ret = submit_one_bio(bio, mirror_num, bio_flags);
+ *bio_ret = bio;
return ret;
}