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Commit 6f1c7fb7 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: introduce {page,io}_is_mergeable() for readability 



Wrap merge condition into function for readability, no logic change.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 125f8ac1

fs/f2fs/data.c

+33 −7
Original line number Diff line number Diff line
@@ -505,6 +505,33 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio) 
	return 0;

}



static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,

				block_t last_blkaddr, block_t cur_blkaddr)

{

	if (last_blkaddr + 1 != cur_blkaddr)

		return false;

	return __same_bdev(sbi, cur_blkaddr, bio);

}



static bool io_type_is_mergeable(struct f2fs_bio_info *io,

						struct f2fs_io_info *fio)

{

	if (io->fio.op != fio->op)

		return false;

	return io->fio.op_flags == fio->op_flags;

}



static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,

					struct f2fs_bio_info *io,

					struct f2fs_io_info *fio,

					block_t last_blkaddr,

					block_t cur_blkaddr)

{

	if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr))

		return false;

	return io_type_is_mergeable(io, fio);

}



int f2fs_merge_page_bio(struct f2fs_io_info *fio)

{

	struct bio *bio = *fio->bio;
@@ -518,8 +545,8 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio) 
	trace_f2fs_submit_page_bio(page, fio);

	f2fs_trace_ios(fio, 0);



	if (bio && (*fio->last_block + 1 != fio->new_blkaddr ||

			!__same_bdev(fio->sbi, fio->new_blkaddr, bio))) {

	if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block,

						fio->new_blkaddr)) {

		__submit_bio(fio->sbi, bio, fio->type);

		bio = NULL;

	}
@@ -592,9 +619,8 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio) 


	inc_page_count(sbi, WB_DATA_TYPE(bio_page));



	if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1 ||

	    (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags) ||

			!__same_bdev(sbi, fio->new_blkaddr, io->bio)))

	if (io->bio && !io_is_mergeable(sbi, io->bio, io, fio,

			io->last_block_in_bio, fio->new_blkaddr))

		__submit_merged_bio(io);

alloc_new:

	if (io->bio == NULL) {
@@ -1691,8 +1717,8 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page, 
	 * This page will go to BIO.  Do we need to send this

	 * BIO off first?

	 */

	if (bio && (*last_block_in_bio != block_nr - 1 ||

		!__same_bdev(F2FS_I_SB(inode), block_nr, bio))) {

	if (bio && !page_is_mergeable(F2FS_I_SB(inode), bio,

				*last_block_in_bio, block_nr)) {

submit_and_realloc:

		__submit_bio(F2FS_I_SB(inode), bio, DATA);

		bio = NULL;