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btrfs: drop checks for mandatory extent_io_ops callbacks

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We know that eadpage_end_io_hook, submit_bio_hook and merge_bio_hook are
always defined so we can drop the checks before we call them.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-02-17 15:59:35 +01:00
parent 4d53dddbec
commit 20c9801d39
1 changed files with 3 additions and 4 deletions
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7
fs/btrfs/extent_io.c
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@ -2567,8 +2567,7 @@ static void end_bio_extent_readpage(struct bio *bio)
len = bvec->bv_len;
mirror = io_bio->mirror_num;
if (likely(uptodate && tree->ops &&
tree->ops->readpage_end_io_hook)) {
if (likely(uptodate && tree->ops)) {
ret = tree->ops->readpage_end_io_hook(io_bio, offset,
page, start, end,
mirror);
@ -2731,7 +2730,7 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
bio->bi_private = NULL;
bio_get(bio);
if (tree->ops && tree->ops->submit_bio_hook)
if (tree->ops)
ret = tree->ops->submit_bio_hook(page->mapping->host, bio,
mirror_num, bio_flags, start);
else
@ -2746,7 +2745,7 @@ static int merge_bio(struct extent_io_tree *tree, struct page *page,
unsigned long bio_flags)
{
int ret = 0;
if (tree->ops && tree->ops->merge_bio_hook)
if (tree->ops)
ret = tree->ops->merge_bio_hook(page, offset, size, bio,
bio_flags);
return ret;