diff options
| -rw-r--r-- | fs/super.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/super.c b/fs/super.c index b9163aea216b..4a81d2c98125 100644 --- a/fs/super.c +++ b/fs/super.c @@ -36,6 +36,7 @@ #include <linux/lockdep.h> #include <linux/user_namespace.h> #include <linux/fs_context.h> +#include <linux/seq_buf.h> #include <uapi/linux/mount.h> #include "internal.h" @@ -270,6 +271,17 @@ static unsigned long super_cache_count(struct shrinker *shrink, return total_objects; } +static void super_cache_to_text(struct seq_buf *out, struct shrinker *shrink) +{ + struct super_block *sb = shrink->private_data; + + seq_buf_printf(out, "sb: %s\n", sb->s_id); + seq_buf_printf(out, "inodes: total %zu shrinkable %lu\n", + per_cpu_sum(*sb->s_inodes_nr), list_lru_count(&sb->s_inode_lru)); + seq_buf_printf(out, "dentries: toal %zu shrinkbale %lu\n", + per_cpu_sum(*sb->s_dentry_nr), list_lru_count(&sb->s_dentry_lru)); +} + static void destroy_super_work(struct work_struct *work) { struct super_block *s = container_of(work, struct super_block, @@ -396,6 +408,7 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags, s->s_shrink->scan_objects = super_cache_scan; s->s_shrink->count_objects = super_cache_count; + s->s_shrink->to_text = super_cache_to_text; s->s_shrink->batch = 1024; s->s_shrink->private_data = s; |