linux-kernel - [PATCH v2] f2fs: allow dirty sections with zero valid block for checkpoint disabled

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Date: Fri, 10 May 2024 06:49:08 -0700
From: Daeho Jeong <daeho43@...il.com>
To: linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	kernel-team@...roid.com
Cc: Daeho Jeong <daehojeong@...gle.com>
Subject: [PATCH v2] f2fs: allow dirty sections with zero valid block for checkpoint disabled

From: Daeho Jeong <daehojeong@...gle.com>

Following the semantic for dirty segments in checkpoint disabled mode,
apply the same rule to dirty sections.

Signed-off-by: Daeho Jeong <daehojeong@...gle.com>

---
v2: simplified codes with the same logic
---
 fs/f2fs/segment.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 6474b7338e81..cb0718cc1e47 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -771,8 +771,10 @@ static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
 			block_t valid_blocks =
 				get_valid_blocks(sbi, segno, true);
 
-			f2fs_bug_on(sbi, unlikely(!valid_blocks ||
-					valid_blocks == CAP_BLKS_PER_SEC(sbi)));
+			f2fs_bug_on(sbi,
+				(!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
+				!valid_blocks) ||
+				valid_blocks == CAP_BLKS_PER_SEC(sbi));
 
 			if (!IS_CURSEC(sbi, secno))
 				set_bit(secno, dirty_i->dirty_secmap);
-- 
2.45.0.118.g7fe29c98d7-goog