diff options
| -rw-r--r-- | fs/btrfs/ioctl.c | 1 | ||||
| -rw-r--r-- | fs/btrfs/sysfs.c | 37 |
2 files changed, 38 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f30231596fe0..8091324341a5 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -387,6 +387,7 @@ bool btrfs_exclop_start(struct btrfs_fs_info *fs_info, void btrfs_exclop_finish(struct btrfs_fs_info *fs_info) { WRITE_ONCE(fs_info->exclusive_operation, BTRFS_EXCLOP_NONE); + sysfs_notify(&fs_info->fs_devices->fsid_kobj, NULL, "exclusive_operation"); } /* diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 438a367371c4..eb8f23578c16 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -809,6 +809,42 @@ static ssize_t btrfs_checksum_show(struct kobject *kobj, BTRFS_ATTR(, checksum, btrfs_checksum_show); +static ssize_t btrfs_exclusive_operation_show(struct kobject *kobj, + struct kobj_attribute *a, char *buf) +{ + struct btrfs_fs_info *fs_info = to_fs_info(kobj); + const char *str; + + switch (READ_ONCE(fs_info->exclusive_operation)) { + case BTRFS_EXCLOP_NONE: + str = "none\n"; + break; + case BTRFS_EXCLOP_BALANCE: + str = "balance\n"; + break; + case BTRFS_EXCLOP_DEV_ADD: + str = "device add\n"; + break; + case BTRFS_EXCLOP_DEV_REMOVE: + str = "device remove\n"; + break; + case BTRFS_EXCLOP_DEV_REPLACE: + str = "device replace\n"; + break; + case BTRFS_EXCLOP_RESIZE: + str = "resize\n"; + break; + case BTRFS_EXCLOP_SWAP_ACTIVATE: + str = "swap activate\n"; + break; + default: + str = "UNKNOWN\n"; + break; + } + return scnprintf(buf, PAGE_SIZE, "%s", str); +} +BTRFS_ATTR(, exclusive_operation, btrfs_exclusive_operation_show); + static const struct attribute *btrfs_attrs[] = { BTRFS_ATTR_PTR(, label), BTRFS_ATTR_PTR(, nodesize), @@ -817,6 +853,7 @@ static const struct attribute *btrfs_attrs[] = { BTRFS_ATTR_PTR(, quota_override), BTRFS_ATTR_PTR(, metadata_uuid), BTRFS_ATTR_PTR(, checksum), + BTRFS_ATTR_PTR(, exclusive_operation), NULL, }; |