mkfs: remove stale node blocks

If the device does not support discard, we should write zero blocks
to avoid roll-forward recovery.

Reported-and-tested-by: Huajun Li <huajun.li@intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index 8234b00..18ded79 100644 (file)
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_format.c
@@ -788,7 +788,12 @@ static int f2fs_write_root_inode(void)
 
        memset(raw_node, 0xff, sizeof(struct f2fs_node));
 
-       main_area_node_seg_blk_offset += F2FS_BLKSIZE;
+       /* avoid power-off-recovery based on roll-forward policy */
+       main_area_node_seg_blk_offset = le32_to_cpu(super_block.main_blkaddr);
+       main_area_node_seg_blk_offset += config.cur_seg[CURSEG_WARM_NODE] *
+                                       config.blks_per_seg;
+        main_area_node_seg_blk_offset *= blk_size_bytes;
+
        if (dev_write(raw_node, main_area_node_seg_blk_offset, F2FS_BLKSIZE)) {
                MSG(1, "\tError: While writing the raw_node to disk!!!\n");
                return -1;