linux-kernel - [PATCH v2] f2fs: alloc new section if curseg is not the first seg in its zone

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Date: Thu, 30 May 2024 18:01:58 +0800
From: Sheng Yong <shengyong@...o.com>
To: jaegeuk@...nel.org,
	chao@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Sheng Yong <shengyong@...o.com>
Subject: [PATCH v2] f2fs: alloc new section if curseg is not the first seg in its zone

If curseg is not the first segment in its zone, the zone is not empty.
A new section should be allocated and avoid resetting the old zone.

Reviewed-by: Chao Yu <chao@...nel.org>
Signed-off-by: Sheng Yong <shengyong@...o.com>
---
v2: remove and update inaccurate commit msg
---
 fs/f2fs/segment.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 4c8836ded90fc..50b38cbe33401 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -5004,7 +5004,8 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type)
 	}
 
 	/* Allocate a new section if it's not new. */
-	if (cs->next_blkoff) {
+	if (cs->next_blkoff ||
+	    cs->segno != GET_SEG_FROM_SEC(sbi, GET_ZONE_FROM_SEC(sbi, cs_section))) {
 		unsigned int old_segno = cs->segno, old_blkoff = cs->next_blkoff;
 
 		f2fs_allocate_new_section(sbi, type, true);
-- 
2.40.1