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f2fs: add proc entry to show valid block bitmap

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This patch adds a new proc entry to show segment information in more detail.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-04-27 16:29:05 -07:00
parent b7a15f3dbe
commit f00d6fa727
1 changed files with 31 additions and 1 deletions
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32
fs/f2fs/super.c
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@ -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 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
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 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
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);