diff options
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 65 |
1 files changed, 57 insertions, 8 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index e6b51fb3ddc1..af545b6b1190 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -421,7 +421,7 @@ BTRFS_ATTR(static_feature, supported_sectorsizes, static ssize_t acl_show(struct kobject *kobj, struct kobj_attribute *a, char *buf) { - return sysfs_emit(buf, "%d\n", !!IS_ENABLED(CONFIG_BTRFS_FS_POSIX_ACL)); + return sysfs_emit(buf, "%d\n", IS_ENABLED(CONFIG_BTRFS_FS_POSIX_ACL)); } BTRFS_ATTR(static_feature, acl, acl_show); @@ -1228,11 +1228,12 @@ static ssize_t btrfs_read_policy_show(struct kobject *kobj, struct kobj_attribute *a, char *buf) { struct btrfs_fs_devices *fs_devices = to_fs_devs(kobj); + const enum btrfs_read_policy policy = READ_ONCE(fs_devices->read_policy); ssize_t ret = 0; int i; for (i = 0; i < BTRFS_NR_READ_POLICY; i++) { - if (fs_devices->read_policy == i) + if (policy == i) ret += sysfs_emit_at(buf, ret, "%s[%s]", (ret == 0 ? "" : " "), btrfs_read_policy_name[i]); @@ -1256,8 +1257,8 @@ static ssize_t btrfs_read_policy_store(struct kobject *kobj, for (i = 0; i < BTRFS_NR_READ_POLICY; i++) { if (sysfs_streq(buf, btrfs_read_policy_name[i])) { - if (i != fs_devices->read_policy) { - fs_devices->read_policy = i; + if (i != READ_ONCE(fs_devices->read_policy)) { + WRITE_ONCE(fs_devices->read_policy, i); btrfs_info(fs_devices->fs_info, "read policy set to '%s'", btrfs_read_policy_name[i]); @@ -1306,6 +1307,47 @@ static ssize_t btrfs_bg_reclaim_threshold_store(struct kobject *kobj, BTRFS_ATTR_RW(, bg_reclaim_threshold, btrfs_bg_reclaim_threshold_show, btrfs_bg_reclaim_threshold_store); +#ifdef CONFIG_BTRFS_DEBUG +static ssize_t btrfs_offload_csum_show(struct kobject *kobj, + struct kobj_attribute *a, char *buf) +{ + struct btrfs_fs_devices *fs_devices = to_fs_devs(kobj); + + switch (READ_ONCE(fs_devices->offload_csum_mode)) { + case BTRFS_OFFLOAD_CSUM_AUTO: + return sysfs_emit(buf, "auto\n"); + case BTRFS_OFFLOAD_CSUM_FORCE_ON: + return sysfs_emit(buf, "1\n"); + case BTRFS_OFFLOAD_CSUM_FORCE_OFF: + return sysfs_emit(buf, "0\n"); + default: + WARN_ON(1); + return -EINVAL; + } +} + +static ssize_t btrfs_offload_csum_store(struct kobject *kobj, + struct kobj_attribute *a, const char *buf, + size_t len) +{ + struct btrfs_fs_devices *fs_devices = to_fs_devs(kobj); + int ret; + bool val; + + ret = kstrtobool(buf, &val); + if (ret == 0) + WRITE_ONCE(fs_devices->offload_csum_mode, + val ? BTRFS_OFFLOAD_CSUM_FORCE_ON : BTRFS_OFFLOAD_CSUM_FORCE_OFF); + else if (ret == -EINVAL && sysfs_streq(buf, "auto")) + WRITE_ONCE(fs_devices->offload_csum_mode, BTRFS_OFFLOAD_CSUM_AUTO); + else + return -EINVAL; + + return len; +} +BTRFS_ATTR_RW(, offload_csum, btrfs_offload_csum_show, btrfs_offload_csum_store); +#endif + /* * Per-filesystem information and stats. * @@ -1325,6 +1367,9 @@ static const struct attribute *btrfs_attrs[] = { BTRFS_ATTR_PTR(, bg_reclaim_threshold), BTRFS_ATTR_PTR(, commit_stats), BTRFS_ATTR_PTR(, temp_fsid), +#ifdef CONFIG_BTRFS_DEBUG + BTRFS_ATTR_PTR(, offload_csum), +#endif NULL, }; @@ -1783,6 +1828,10 @@ static ssize_t btrfs_devinfo_scrub_speed_max_store(struct kobject *kobj, unsigned long long limit; limit = memparse(buf, &endptr); + /* There could be trailing '\n', also catch any typos after the value. */ + endptr = skip_spaces(endptr); + if (*endptr != 0) + return -EINVAL; WRITE_ONCE(device->scrub_speed_max, limit); return len; } @@ -2290,7 +2339,7 @@ int btrfs_sysfs_add_one_qgroup(struct btrfs_fs_info *fs_info, struct kobject *qgroups_kobj = fs_info->qgroups_kobj; int ret; - if (test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state)) + if (btrfs_is_testing(fs_info)) return 0; if (qgroup->kobj.state_initialized) return 0; @@ -2311,7 +2360,7 @@ void btrfs_sysfs_del_qgroups(struct btrfs_fs_info *fs_info) struct btrfs_qgroup *qgroup; struct btrfs_qgroup *next; - if (test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state)) + if (btrfs_is_testing(fs_info)) return; rbtree_postorder_for_each_entry_safe(qgroup, next, @@ -2332,7 +2381,7 @@ int btrfs_sysfs_add_qgroups(struct btrfs_fs_info *fs_info) struct btrfs_qgroup *next; int ret = 0; - if (test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state)) + if (btrfs_is_testing(fs_info)) return 0; ASSERT(fsid_kobj); @@ -2364,7 +2413,7 @@ out: void btrfs_sysfs_del_one_qgroup(struct btrfs_fs_info *fs_info, struct btrfs_qgroup *qgroup) { - if (test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state)) + if (btrfs_is_testing(fs_info)) return; if (qgroup->kobj.state_initialized) { |