f2fs: use nm_i->next_scan_nid as default for next_free_nid

Now, if there is no free nid in nm_i->free_nid_list, 0 may be saved
into next_free_nid of checkpoint, this may cause useless scanning for
next mount.  nm_i->next_scan_nid should be a better default value than
0.

Signed-off-by: Huang, Ying <ying.huang@intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 5af7e3d1bb6e46b354e20b81d18733b185543b11..d44d287cdae955b5ac8932738a0371345957c1cd 100644 (file)
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -808,7 +808,8 @@ 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;
+       struct f2fs_nm_info *nm_i = NM_I(sbi);
+       nid_t last_nid = nm_i->next_scan_nid;
        block_t start_blk;
        struct page *cp_page;
        unsigned int data_sum_blocks, orphan_blocks;