Re: [PATCH 2/5 v2] f2fs: fix write pointers all the time

[Jaegeuk Kim]

Even if the roll forward recovery stopped due to any error, we have to fix
the write pointers in order to mount the disk from the previous checkpoint.

Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---

 from v1:
  - preserve error

 fs/f2fs/recovery.c | 15 +++++++--------
 fs/f2fs/super.c    | 11 +++++++----
 2 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index b3baec666afe..3078d5613748 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -863,7 +863,6 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only)
 	int ret = 0;
 	unsigned long s_flags = sbi->sb->s_flags;
 	bool need_writecp = false;
-	bool fix_curseg_write_pointer = false;
 
 	if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE))
 		f2fs_info(sbi, "recover fsync data on readonly fs");
@@ -894,8 +893,6 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only)
 	else
 		f2fs_bug_on(sbi, sbi->sb->s_flags & SB_ACTIVE);
 skip:
-	fix_curseg_write_pointer = !check_only || list_empty(&inode_list);
-
 	destroy_fsync_dnodes(&inode_list, err);
 	destroy_fsync_dnodes(&tmp_inode_list, err);
 
@@ -913,11 +910,13 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only)
 	 * and the f2fs is not read only, check and fix zoned block devices'
 	 * write pointer consistency.
 	 */
-	if (!err && fix_curseg_write_pointer && !f2fs_readonly(sbi->sb) &&
-			f2fs_sb_has_blkzoned(sbi)) {
-		err = f2fs_fix_curseg_write_pointer(sbi);
-		if (!err)
-			err = f2fs_check_write_pointer(sbi);
+	if (f2fs_sb_has_blkzoned(sbi) && !f2fs_readonly(sbi->sb)) {
+		int err2 = f2fs_fix_curseg_write_pointer(sbi);
+
+		if (!err2)
+			err2 = f2fs_check_write_pointer(sbi);
+		if (err2)
+			err = err2;
 		ret = err;
 	}
 
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index d91e57ca6110..77348fd0a42b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -4674,11 +4674,14 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 	 * If the f2fs is not readonly and fsync data recovery succeeds,
 	 * check zoned block devices' write pointer consistency.
 	 */
-	if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
-		err = f2fs_check_write_pointer(sbi);
-		if (err)
-			goto free_meta;
+	if (f2fs_sb_has_blkzoned(sbi) && !f2fs_readonly(sb)) {
+		int err2 = f2fs_check_write_pointer(sbi);
+
+		if (err2)
+			err = err2;
 	}
+	if (err)
+		goto free_meta;
 
 	f2fs_init_inmem_curseg(sbi);
 
-- 
2.44.0.rc1.240.g4c46232300-goog