f2fs: avoid retrying wrong recovery routine when error was occurred

This patch eliminates the propagation of recovery errors to the next mount.

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

4 files changed, 23 insertions, 7 deletions

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 26b94bbc826c..cea20b810f44 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -796,6 +796,7 @@ static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi)
 static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
 {
         struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
+        struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
         nid_t last_nid = 0;
         block_t start_blk;
         struct page *cp_page;
@@ -809,7 +810,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
          * This avoids to conduct wrong roll-forward operations and uses
          * metapages, so should be called prior to sync_meta_pages below.
          */
-        discard_next_dnode(sbi);
+        discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg));
 
         /* Flush all the NAT/SIT pages */
         while (get_pages(sbi, F2FS_DIRTY_META))
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 475f97ca49ae..14b9f746d5b3 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1225,7 +1225,7 @@ void destroy_flush_cmd_control(struct f2fs_sb_info *);
 void invalidate_blocks(struct f2fs_sb_info *, block_t);
 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
 void clear_prefree_segments(struct f2fs_sb_info *);
-void discard_next_dnode(struct f2fs_sb_info *);
+void discard_next_dnode(struct f2fs_sb_info *, block_t);
 int npages_for_summary_flush(struct f2fs_sb_info *);
 void allocate_new_segments(struct f2fs_sb_info *);
 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index a112368a4a86..b2aa53b99f64 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -434,7 +434,9 @@ next:
 
 int recover_fsync_data(struct f2fs_sb_info *sbi)
 {
+        struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
         struct list_head inode_list;
+        block_t blkaddr;
         int err;
         bool need_writecp = false;
 
@@ -447,6 +449,9 @@ int recover_fsync_data(struct f2fs_sb_info *sbi)
 
         /* step #1: find fsynced inode numbers */
         sbi->por_doing = true;
+
+        blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
+
         err = find_fsync_dnodes(sbi, &inode_list);
         if (err)
                 goto out;
@@ -462,8 +467,21 @@ int recover_fsync_data(struct f2fs_sb_info *sbi)
 out:
         destroy_fsync_dnodes(&inode_list);
         kmem_cache_destroy(fsync_entry_slab);
+
+        if (err) {
+                truncate_inode_pages_final(NODE_MAPPING(sbi));
+                truncate_inode_pages_final(META_MAPPING(sbi));
+        }
+
         sbi->por_doing = false;
-        if (!err && need_writecp)
+        if (err) {
+                discard_next_dnode(sbi, blkaddr);
+
+                /* Flush all the NAT/SIT pages */
+                while (get_pages(sbi, F2FS_DIRTY_META))
+                        sync_meta_pages(sbi, META, LONG_MAX);
+        } else if (need_writecp) {
                 write_checkpoint(sbi, false);
+        }
         return err;
 }
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 9fce0f47eb35..e016b97be2ac 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -379,11 +379,8 @@ static int f2fs_issue_discard(struct f2fs_sb_info *sbi,
         return blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0);
 }
 
-void discard_next_dnode(struct f2fs_sb_info *sbi)
+void discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr)
 {
-        struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
-        block_t blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
-
         if (f2fs_issue_discard(sbi, blkaddr, 1)) {
                 struct page *page = grab_meta_page(sbi, blkaddr);
                 /* zero-filled page */