btrfs: sysfs: add UUID/debug/discard directory (e4faab84) · Commits · 戴 / test

fs/btrfs/ctree.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -930,6 +930,7 @@ struct btrfs_fs_info {

		#ifdef CONFIG_BTRFS_DEBUG
		struct kobject *debug_kobj;
		struct kobject *discard_debug_kobj;
		#endif
		};

+26 −0

Original line number	Diff line number	Diff line
		@@ -338,6 +338,13 @@ static const struct attribute_group btrfs_static_feature_attr_group = {

		#ifdef CONFIG_BTRFS_DEBUG

		/*
		* Discard statistics and tunables
		*/
		static const struct attribute *discard_debug_attrs[] = {
		NULL,
		};

		/*
		* Runtime debugging exported via sysfs
		*
		@@ -776,6 +783,12 @@ void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info)
		kobject_put(fs_info->space_info_kobj);
		}
		#ifdef CONFIG_BTRFS_DEBUG
		if (fs_info->discard_debug_kobj) {
		sysfs_remove_files(fs_info->discard_debug_kobj,
		discard_debug_attrs);
		kobject_del(fs_info->discard_debug_kobj);
		kobject_put(fs_info->discard_debug_kobj);
		}
		if (fs_info->debug_kobj) {
		sysfs_remove_files(fs_info->debug_kobj, btrfs_debug_mount_attrs);
		kobject_del(fs_info->debug_kobj);
		@@ -1127,6 +1140,19 @@ int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info)
		error = sysfs_create_files(fs_info->debug_kobj, btrfs_debug_mount_attrs);
		if (error)
		goto failure;

		/* Discard directory */
		fs_info->discard_debug_kobj = kobject_create_and_add("discard",
		fs_info->debug_kobj);
		if (!fs_info->discard_debug_kobj) {
		error = -ENOMEM;
		goto failure;
		}

		error = sysfs_create_files(fs_info->discard_debug_kobj,
		discard_debug_attrs);
		if (error)
		goto failure;
		#endif

		error = addrm_unknown_feature_attrs(fs_info, true);