f2fs: prevent checkpoint during roll-forward

Any checkpoint should not be done during the core roll-forward procedure.
Especially, it includes error cases too.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 7ca7aadaa607..d36ef35353b2 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -459,6 +459,9 @@ int recover_fsync_data(struct f2fs_sb_info *sbi)
         /* step #1: find fsynced inode numbers */
         sbi->por_doing = true;
 
+        /* prevent checkpoint */
+        mutex_lock(&sbi->cp_mutex);
+
         blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
 
         err = find_fsync_dnodes(sbi, &inode_list);
@@ -490,8 +493,13 @@ out:
                 /* Flush all the NAT/SIT pages */
                 while (get_pages(sbi, F2FS_DIRTY_META))
                         sync_meta_pages(sbi, META, LONG_MAX);
+                set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
+                mutex_unlock(&sbi->cp_mutex);
         } else if (need_writecp) {
+                mutex_unlock(&sbi->cp_mutex);
                 write_checkpoint(sbi, false);
+        } else {
+                mutex_unlock(&sbi->cp_mutex);
         }
         return err;
 }