diff options
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index c6569905d3d1..1f157fba8940 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -77,7 +77,7 @@ static int can_modify_feature(struct btrfs_feature_attr *fa) clear = BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR; break; default: - printk(KERN_WARNING "btrfs: sysfs: unknown feature set %d\n", + pr_warn("btrfs: sysfs: unknown feature set %d\n", fa->feature_set); return 0; } @@ -430,7 +430,8 @@ static ssize_t btrfs_sectorsize_show(struct kobject *kobj, { struct btrfs_fs_info *fs_info = to_fs_info(kobj); - return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize); + return snprintf(buf, PAGE_SIZE, "%u\n", + fs_info->super_copy->sectorsize); } BTRFS_ATTR(sectorsize, btrfs_sectorsize_show); @@ -440,7 +441,8 @@ static ssize_t btrfs_clone_alignment_show(struct kobject *kobj, { struct btrfs_fs_info *fs_info = to_fs_info(kobj); - return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize); + return snprintf(buf, PAGE_SIZE, "%u\n", + fs_info->super_copy->sectorsize); } BTRFS_ATTR(clone_alignment, btrfs_clone_alignment_show); @@ -836,9 +838,18 @@ static int btrfs_init_debugfs(void) if (!btrfs_debugfs_root_dentry) return -ENOMEM; - debugfs_create_u64("test", S_IRUGO | S_IWUGO, btrfs_debugfs_root_dentry, + /* + * Example code, how to export data through debugfs. + * + * file: /sys/kernel/debug/btrfs/test + * contents of: btrfs_debugfs_test + */ +#ifdef CONFIG_BTRFS_DEBUG + debugfs_create_u64("test", S_IRUGO | S_IWUSR, btrfs_debugfs_root_dentry, &btrfs_debugfs_test); #endif + +#endif return 0; } |