page_is_mergeable
if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio,
if (bio && (!page_is_mergeable(sbi, bio,
if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio,
if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr))
f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio,
if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block,