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From:   Daeho Jeong <daeho43@gmail.com>
To:     linux-kernel@vger.kernel.org,
        linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com
Cc:     Daeho Jeong <daehojeong@google.com>
Subject: [PATCH] f2fs-tools: do not put CP_UMOUNT_FLAG for roll forward recovery
Date:   Fri, 27 Oct 2023 08:49:35 -0700
Message-ID: <20231027154935.1384979-1-daeho43@gmail.com>
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From: Daeho Jeong <daehojeong@google.com>

If we write CP_UMOUNT_FLAG in fsck, f2fs will not do foll forward recovery
even though it has to do.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
---
 fsck/fsck.c       | 3 ++-
 fsck/mount.c      | 5 ++++-
 include/f2fs_fs.h | 1 +
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/fsck/fsck.c b/fsck/fsck.c
index f1a55db..126458c 100644
--- a/fsck/fsck.c
+++ b/fsck/fsck.c
@@ -2526,7 +2526,8 @@ static void fix_checkpoint(struct f2fs_sb_info *sbi)
 	struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi);
 	struct f2fs_checkpoint *cp = F2FS_CKPT(sbi);
 	unsigned long long cp_blk_no;
-	u32 flags = c.alloc_failed ? CP_FSCK_FLAG: CP_UMOUNT_FLAG;
+	u32 flags = c.alloc_failed ? CP_FSCK_FLAG :
+			(c.roll_forward ? 0 : CP_UMOUNT_FLAG);
 	block_t orphan_blks = 0;
 	block_t cp_blocks;
 	u32 i;
diff --git a/fsck/mount.c b/fsck/mount.c
index 3b02d73..805671c 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -3218,7 +3218,7 @@ void write_checkpoint(struct f2fs_sb_info *sbi)
 	struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi);
 	block_t orphan_blks = 0;
 	unsigned long long cp_blk_no;
-	u32 flags = CP_UMOUNT_FLAG;
+	u32 flags = c.roll_forward ? 0 : CP_UMOUNT_FLAG;
 	int i, ret;
 	uint32_t crc = 0;
 
@@ -3837,6 +3837,9 @@ static int record_fsync_data(struct f2fs_sb_info *sbi)
 	if (ret)
 		goto out;
 
+	if (c.func == FSCK && inode_list.next != &inode_list)
+		c.roll_forward = 1;
+
 	ret = late_build_segment_manager(sbi);
 	if (ret < 0) {
 		ERR_MSG("late_build_segment_manager failed\n");
diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h
index abd5abf..faa5d6b 100644
--- a/include/f2fs_fs.h
+++ b/include/f2fs_fs.h
@@ -1513,6 +1513,7 @@ struct f2fs_configuration {
 	unsigned int feature;			/* defined features */
 	unsigned int quota_bits;	/* quota bits */
 	time_t fixed_time;
+	int roll_forward;
 
 	/* mkfs parameters */
 	int fake_seed;
-- 
2.42.0.820.g83a721a137-goog