From f2fec3e99a32d7c14dbf63c824f8286ebc94b18d Mon Sep 17 00:00:00 2001 From: Gou Hao Date: Tue, 24 Oct 2023 11:52:15 +0800 Subject: [PATCH] ext4: delete redundant calculations in ext4_mb_get_buddy_page_lock() 'blocks_per_page' is always 1 after 'if (blocks_per_page >= 2)', 'pnum' and 'block' are equal in this case. Signed-off-by: Gou Hao Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20231024035215.29474-1-gouhao@uniontech.com Signed-off-by: Theodore Ts'o --- fs/ext4/mballoc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index d72b5e3c92ec4..847dc0fb15735 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1456,9 +1456,8 @@ static int ext4_mb_get_buddy_page_lock(struct super_block *sb, return 0; } - block++; - pnum = block / blocks_per_page; - page = find_or_create_page(inode->i_mapping, pnum, gfp); + /* blocks_per_page == 1, hence we need another page for the buddy */ + page = find_or_create_page(inode->i_mapping, block + 1, gfp); if (!page) return -ENOMEM; BUG_ON(page->mapping != inode->i_mapping); -- 2.30.2