diff options
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 360d6093476f..c58cea0da597 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -973,6 +973,39 @@ BTRFS_ATTR_RW(space_info, dynamic_reclaim, btrfs_sinfo_dynamic_reclaim_show, btrfs_sinfo_dynamic_reclaim_store); +static ssize_t btrfs_sinfo_periodic_reclaim_show(struct kobject *kobj, + struct kobj_attribute *a, + char *buf) +{ + struct btrfs_space_info *space_info = to_space_info(kobj); + + return sysfs_emit(buf, "%d\n", READ_ONCE(space_info->periodic_reclaim)); +} + +static ssize_t btrfs_sinfo_periodic_reclaim_store(struct kobject *kobj, + struct kobj_attribute *a, + const char *buf, size_t len) +{ + struct btrfs_space_info *space_info = to_space_info(kobj); + int periodic_reclaim; + int ret; + + ret = kstrtoint(buf, 10, &periodic_reclaim); + if (ret) + return ret; + + if (periodic_reclaim < 0) + return -EINVAL; + + WRITE_ONCE(space_info->periodic_reclaim, periodic_reclaim != 0); + + return len; +} + +BTRFS_ATTR_RW(space_info, periodic_reclaim, + btrfs_sinfo_periodic_reclaim_show, + btrfs_sinfo_periodic_reclaim_store); + /* * Allocation information about block group types. * @@ -996,6 +1029,7 @@ static struct attribute *space_info_attrs[] = { BTRFS_ATTR_PTR(space_info, reclaim_count), BTRFS_ATTR_PTR(space_info, reclaim_bytes), BTRFS_ATTR_PTR(space_info, reclaim_errors), + BTRFS_ATTR_PTR(space_info, periodic_reclaim), #ifdef CONFIG_BTRFS_DEBUG BTRFS_ATTR_PTR(space_info, force_chunk_alloc), #endif |