[PATCH] f2fs: allow dirty sections with zero valid block for checkpoint disabled

[Daeho Jeong]

From: Daeho Jeong <daehojeong@xxxxxxxxxx>

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

Signed-off-by: Daeho Jeong <daehojeong@xxxxxxxxxx>
---
 fs/f2fs/segment.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 6474b7338e81..2463398b243f 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -771,8 +771,11 @@ 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)));
+			if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED))
+				f2fs_bug_on(sbi, unlikely(!valid_blocks));
+
+			f2fs_bug_on(sbi, unlikely(valid_blocks ==
+					CAP_BLKS_PER_SEC(sbi)));
 
 			if (!IS_CURSEC(sbi, secno))
 				set_bit(secno, dirty_i->dirty_secmap);
-- 
2.45.0.rc1.225.g2a3ae87e7f-goog