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Commit f00d6fa7 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

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: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent b7a15f3d

fs/f2fs/super.c

+31 −1
Original line number Diff line number Diff line
@@ -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);