This patch adds a new proc entry to show segment information in more detail.
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
fs/f2fs/super.c | 32 +++++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index b006de6..90d4b86 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);
--
2.6.3
------------------------------------------------------------------------------
Find and fix application performance issues faster with Applications Manager
Applications Manager provides deep performance insights into multiple tiers of
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
