From: Lei Chen <lennychen@xxxxxxxxxxx> iomap_add_to_ioend append page on wpc->ioend->io_bio. If io_bio is full, iomap_chain_bio will allocate a new bio. So when bio_add_page is called, pages is guaranteed to be appended into wpc->ioend->io_bio. So we do not need to check if page can be merged. Thus it's a faster way to directly call __bio_add_page. Signed-off-by: Lei Chen <lennychen@xxxxxxxxxxx> --- fs/iomap/buffered-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 10cc797..7a0631a 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1310,7 +1310,7 @@ static void iomap_writepage_end_bio(struct bio *bio) wpc->ioend->io_bio = iomap_chain_bio(wpc->ioend->io_bio); } - bio_add_page(wpc->ioend->io_bio, page, len, poff); + __bio_add_page(wpc->ioend->io_bio, page, len, poff); } wpc->ioend->io_size += len; -- 1.8.3.1
