diff options
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 5d752f791950..07bc2bfbdb96 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -914,8 +914,8 @@ static int btrfs_parse_subvol_options(const char *options, fmode_t flags, { substring_t args[MAX_OPT_ARGS]; char *opts, *orig, *p; - char *num = NULL; int error = 0; + u64 subvolid; if (!options) return 0; @@ -945,18 +945,15 @@ static int btrfs_parse_subvol_options(const char *options, fmode_t flags, } break; case Opt_subvolid: - num = match_strdup(&args[0]); - if (num) { - *subvol_objectid = memparse(num, NULL); - kfree(num); - /* we want the original fs_tree */ - if (!*subvol_objectid) - *subvol_objectid = - BTRFS_FS_TREE_OBJECTID; - } else { - error = -EINVAL; + error = match_u64(&args[0], &subvolid); + if (error) goto out; - } + + /* we want the original fs_tree */ + if (subvolid == 0) + subvolid = BTRFS_FS_TREE_OBJECTID; + + *subvol_objectid = subvolid; break; case Opt_subvolrootid: pr_warn("BTRFS: 'subvolrootid' mount option is deprecated and has no effect\n"); |