btrfs-progs: remove code for setup mntid in cmd_subvol_show

We don't need to use value of mntid in cmd_subvol_show(), no need
to get its value.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/cmds-subvolume.c b/cmds-subvolume.c
index 61f08f5..4258ea1 100644 (file)
--- a/cmds-subvolume.c
+++ b/cmds-subvolume.c
@@ -938,7 +938,7 @@ static int cmd_subvol_show(int argc, char **argv)
        char uuidparse[BTRFS_UUID_UNPARSED_SIZE];
        char *fullpath = NULL, *svpath = NULL, *mnt = NULL;
        char raw_prefix[] = "\t\t\t\t";
-       u64 sv_id, mntid;
+       u64 sv_id;
        int fd = -1, mntfd = -1;
        int ret = 1;
        DIR *dirstream1 = NULL, *dirstream2 = NULL;
@@ -998,12 +998,6 @@ static int cmd_subvol_show(int argc, char **argv)
                goto out;
        }
 
-       ret = btrfs_list_get_path_rootid(mntfd, &mntid);
-       if (ret) {
-               fprintf(stderr, "ERROR: can't get rootid for '%s'\n", mnt);
-               goto out;
-       }
-
        if (sv_id == BTRFS_FS_TREE_OBJECTID) {
                printf("%s is btrfs root\n", fullpath);
                goto out;