diff options
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 436ac7b4b334..c45d9b6dfdb5 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -1455,6 +1455,33 @@ static ssize_t btrfs_devinfo_replace_target_show(struct kobject *kobj, } BTRFS_ATTR(devid, replace_target, btrfs_devinfo_replace_target_show); +static ssize_t btrfs_devinfo_scrub_speed_max_show(struct kobject *kobj, + struct kobj_attribute *a, + char *buf) +{ + struct btrfs_device *device = container_of(kobj, struct btrfs_device, + devid_kobj); + + return scnprintf(buf, PAGE_SIZE, "%llu\n", + READ_ONCE(device->scrub_speed_max)); +} + +static ssize_t btrfs_devinfo_scrub_speed_max_store(struct kobject *kobj, + struct kobj_attribute *a, + const char *buf, size_t len) +{ + struct btrfs_device *device = container_of(kobj, struct btrfs_device, + devid_kobj); + char *endptr; + unsigned long long limit; + + limit = memparse(buf, &endptr); + WRITE_ONCE(device->scrub_speed_max, limit); + return len; +} +BTRFS_ATTR_RW(devid, scrub_speed_max, btrfs_devinfo_scrub_speed_max_show, + btrfs_devinfo_scrub_speed_max_store); + static ssize_t btrfs_devinfo_writeable_show(struct kobject *kobj, struct kobj_attribute *a, char *buf) { @@ -1472,6 +1499,7 @@ static struct attribute *devid_attrs[] = { BTRFS_ATTR_PTR(devid, in_fs_metadata), BTRFS_ATTR_PTR(devid, missing), BTRFS_ATTR_PTR(devid, replace_target), + BTRFS_ATTR_PTR(devid, scrub_speed_max), BTRFS_ATTR_PTR(devid, writeable), NULL }; |