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authorJaegeuk Kim <jaegeuk@kernel.org>2016-04-28 02:29:05 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2016-05-07 20:32:19 +0300
commitf00d6fa727a4c4977241bd21910cafc139f77989 (patch)
tree3585063cb9f002e8b857f617ae00b10aebf937d5
parentb7a15f3dbe3f3d009360273b62a633e47a1a65d6 (diff)
downloadlinux-f00d6fa727a4c4977241bd21910cafc139f77989.tar.xz
f2fs: add proc entry to show valid block bitmap
This patch adds a new proc entry to show segment information in more detail. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
-rw-r--r--fs/f2fs/super.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index b006de60e99b..90d4b864590c 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -539,6 +539,7 @@ static void f2fs_put_super(struct super_block *sb)
if (sbi->s_proc) {
remove_proc_entry("segment_info", sbi->s_proc);
+ remove_proc_entry("segment_bits", sbi->s_proc);
remove_proc_entry(sb->s_id, f2fs_proc_root);
}
kobject_del(&sbi->s_kobj);
@@ -745,6 +746,30 @@ static int segment_info_seq_show(struct seq_file *seq, void *offset)
return 0;
}
+static int segment_bits_seq_show(struct seq_file *seq, void *offset)
+{
+ struct super_block *sb = seq->private;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ unsigned int total_segs =
+ le32_to_cpu(sbi->raw_super->segment_count_main);
+ int i, j;
+
+ seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
+ "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
+
+ for (i = 0; i < total_segs; i++) {
+ struct seg_entry *se = get_seg_entry(sbi, i);
+
+ seq_printf(seq, "%-10d", i);
+ seq_printf(seq, "%d|%-3u|", se->type,
+ get_valid_blocks(sbi, i, 1));
+ for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
+ seq_printf(seq, "%x ", se->cur_valid_map[j]);
+ seq_putc(seq, '\n');
+ }
+ return 0;
+}
+
#define F2FS_PROC_FILE_DEF(_name) \
static int _name##_open_fs(struct inode *inode, struct file *file) \
{ \
@@ -760,6 +785,7 @@ static const struct file_operations f2fs_seq_##_name##_fops = { \
};
F2FS_PROC_FILE_DEF(segment_info);
+F2FS_PROC_FILE_DEF(segment_bits);
static void default_options(struct f2fs_sb_info *sbi)
{
@@ -1541,9 +1567,12 @@ try_onemore:
if (f2fs_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
- if (sbi->s_proc)
+ if (sbi->s_proc) {
proc_create_data("segment_info", S_IRUGO, sbi->s_proc,
&f2fs_seq_segment_info_fops, sb);
+ proc_create_data("segment_bits", S_IRUGO, sbi->s_proc,
+ &f2fs_seq_segment_bits_fops, sb);
+ }
sbi->s_kobj.kset = f2fs_kset;
init_completion(&sbi->s_kobj_unregister);
@@ -1619,6 +1648,7 @@ free_kobj:
free_proc:
if (sbi->s_proc) {
remove_proc_entry("segment_info", sbi->s_proc);
+ remove_proc_entry("segment_bits", sbi->s_proc);
remove_proc_entry(sb->s_id, f2fs_proc_root);
}
f2fs_destroy_stats(sbi);