diff options
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index bfe5e27617b0..c1261309a817 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -984,7 +984,8 @@ static ssize_t btrfs_bg_reclaim_threshold_show(struct kobject *kobj, struct btrfs_fs_info *fs_info = to_fs_info(kobj); ssize_t ret; - ret = scnprintf(buf, PAGE_SIZE, "%d\n", fs_info->bg_reclaim_threshold); + ret = scnprintf(buf, PAGE_SIZE, "%d\n", + READ_ONCE(fs_info->bg_reclaim_threshold)); return ret; } @@ -1001,10 +1002,10 @@ static ssize_t btrfs_bg_reclaim_threshold_store(struct kobject *kobj, if (ret) return ret; - if (thresh <= 50 || thresh > 100) + if (thresh != 0 && (thresh <= 50 || thresh > 100)) return -EINVAL; - fs_info->bg_reclaim_threshold = thresh; + WRITE_ONCE(fs_info->bg_reclaim_threshold, thresh); return len; } |