You can monitor valid block counts of whole segments in:
/proc/fs/f2fs/sdb1/segment_info.
Signed-off-by: Jaegeuk Kim <[email protected]>
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/super.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 47 insertions(+)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 82e187f..e3a611d 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -365,6 +365,7 @@ enum page_type {
struct f2fs_sb_info {
struct super_block *sb; /* pointer to VFS super block */
+ struct proc_dir_entry *s_proc; /* proc entry */
struct buffer_head *raw_super_buf; /* buffer head of raw sb */
struct f2fs_super_block *raw_super; /* raw super block pointer */
int s_dirty; /* dirty flag for checkpoint */
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index d48d995..1ed0279 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -18,6 +18,7 @@
#include <linux/parser.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/proc_fs.h>
#include <linux/random.h>
#include <linux/exportfs.h>
#include <linux/blkdev.h>
@@ -31,6 +32,7 @@
#define CREATE_TRACE_POINTS
#include <trace/events/f2fs.h>
+static struct proc_dir_entry *f2fs_proc_root;
static struct kmem_cache *f2fs_inode_cachep;
enum {
@@ -404,6 +406,11 @@ static void f2fs_put_super(struct super_block *sb)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ if (sbi->s_proc) {
+ remove_proc_entry("segment_info", sbi->s_proc);
+ remove_proc_entry(sb->s_id, f2fs_proc_root);
+ }
+
f2fs_destroy_stats(sbi);
stop_gc_thread(sbi);
@@ -521,6 +528,36 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
return 0;
}
+static int segment_info_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;
+
+ for (i = 0; i < total_segs; i++) {
+ seq_printf(seq, "%u", get_valid_blocks(sbi, i, 1));
+ if (i != 0 && (i % 10) == 0)
+ seq_puts(seq, "\n");
+ else
+ seq_puts(seq, " ");
+ }
+ return 0;
+}
+
+static int segment_info_open_fs(struct inode *inode, struct file *file)
+{
+ return single_open(file, segment_info_seq_show, PDE_DATA(inode));
+}
+
+static const struct file_operations f2fs_seq_segment_info_fops = {
+ .owner = THIS_MODULE,
+ .open = segment_info_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static int f2fs_remount(struct super_block *sb, int *flags, char *data)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
@@ -947,6 +984,13 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
if (err)
goto fail;
+ if (f2fs_proc_root)
+ sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
+
+ if (sbi->s_proc)
+ proc_create_data("segment_info", S_IRUGO, sbi->s_proc,
+ &f2fs_seq_segment_info_fops, sb);
+
if (test_opt(sbi, DISCARD)) {
struct request_queue *q = bdev_get_queue(sb->s_bdev);
if (!blk_queue_discard(q))
@@ -1033,12 +1077,14 @@ static int __init init_f2fs_fs(void)
if (err)
goto fail;
f2fs_create_root_stats();
+ f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
fail:
return err;
}
static void __exit exit_f2fs_fs(void)
{
+ remove_proc_entry("fs/f2fs", NULL);
f2fs_destroy_root_stats();
unregister_filesystem(&f2fs_fs_type);
destroy_checkpoint_caches();
--
1.8.3.1.437.g0dbd812