linux-kernel - [PATCH] f2fs: fix block migration when section is not aligned to pow2

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Date: Fri, 26 Apr 2024 04:41:56 -0600
From: Wu Bo <bo.wu@...o.com>
To: Jaegeuk Kim <jaegeuk@...nel.org>,
	Chao Yu <chao@...nel.org>
Cc: linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Wu Bo <wubo.oduw@...il.com>,
	Wu Bo <bo.wu@...o.com>,
	Liao Yuanhong <liaoyuanhong@...o.com>
Subject: [PATCH] f2fs: fix block migration when section is not aligned to pow2

As for zoned-UFS, f2fs section size is forced to zone size. And zone
size may not aligned to pow2.

Fixes: 859fca6b706e ("f2fs: swap: support migrating swapfile in aligned write mode")
Signed-off-by: Liao Yuanhong <liaoyuanhong@...o.com>
Signed-off-by: Wu Bo <bo.wu@...o.com>
---
 fs/f2fs/data.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index d9494b5fc7c1..7ff5ad3fd5dc 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3904,7 +3904,6 @@ static int check_swap_activate(struct swap_info_struct *sis,
 	int nr_extents = 0;
 	unsigned long nr_pblocks;
 	unsigned int blks_per_sec = BLKS_PER_SEC(sbi);
-	unsigned int sec_blks_mask = BLKS_PER_SEC(sbi) - 1;
 	unsigned int not_aligned = 0;
 	int ret = 0;
 
@@ -3942,8 +3941,8 @@ static int check_swap_activate(struct swap_info_struct *sis,
 		pblock = map.m_pblk;
 		nr_pblocks = map.m_len;
 
-		if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask ||
-				nr_pblocks & sec_blks_mask ||
+		if ((pblock - SM_I(sbi)->main_blkaddr) % blks_per_sec ||
+				nr_pblocks % blks_per_sec ||
 				!f2fs_valid_pinned_area(sbi, pblock)) {
 			bool last_extent = false;
 
-- 
2.25.1