f2fs: print type for each segment in segment_info's show

The original segment_info's show looks out-of-format:
cat /proc/fs/f2fs/loop0/segment_info
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 512
512 512 512 512 512 512 512 0 0 512
348 0 263 0 0 512 0 0 512 512
512 512 0 512 512 512 512 512 512 512
512 512 511 328 512 512 512 512 512 512
512 512 512 512 512 512 512 0 0 175

Let's fix this and show type for each segment.
cat /proc/fs/f2fs/loop0/segment_info
format: segment_type|valid_blocks
segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)
0    2|0   1|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0
10   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0
20   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0
30   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0
40   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0   0|0
50   3|0   3|0   3|0   3|0   3|0   3|0   3|0   0|0   3|0   3|0
60   3|0   3|0   3|0   3|0   3|0   3|0   3|0   3|0   3|0   3|512
70   3|512 3|512 3|512 3|512 3|512 3|512 3|512 3|0   3|0   3|512
80   3|0   3|0   3|0   3|0   3|0   3|512 3|0   3|0   3|512 3|512
90   3|512 0|512 3|274 0|512 0|512 0|512 0|512 0|512 0|512 3|512
100  3|512 0|512 3|511 0|328 3|512 0|512 0|512 3|512 0|512 0|512
110  0|512 0|512 0|512 0|512 0|512 0|512 0|512 5|0   4|0   3|512

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 3a51d7a4a6c9..057a3efb2487 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -544,8 +544,16 @@ static int segment_info_seq_show(struct seq_file *seq, void *offset)
                         le32_to_cpu(sbi->raw_super->segment_count_main);
         int i;
 
+        seq_puts(seq, "format: segment_type|valid_blocks\n"
+                "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
+
         for (i = 0; i < total_segs; i++) {
-                seq_printf(seq, "%u", get_valid_blocks(sbi, i, 1));
+                struct seg_entry *se = get_seg_entry(sbi, i);
+
+                if ((i % 10) == 0)
+                        seq_printf(seq, "%-5d", i);
+                seq_printf(seq, "%d|%-3u", se->type,
+                                        get_valid_blocks(sbi, i, 1));
                 if ((i % 10) == 9 || i == (total_segs - 1))
                         seq_putc(seq, '\n');
                 else