btrfs-progs: subvol list: remove useless comments

The search ioctl follows a well known usage pattern.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/btrfs-list.c b/btrfs-list.c
index 4a2476b..1cf3be8 100644 (file)
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -979,32 +979,21 @@ static int list_subvol_search(int fd, struct root_lookup *root_lookup)
        memset(&args, 0, sizeof(args));
 
        sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
-
-       /*
-        * set the min and max to backref keys.  The search will
-        * only send back this type of key now.
-        */
+       /* Search both live and deleted subvolumes */
        sk->max_type = BTRFS_ROOT_BACKREF_KEY;
        sk->min_type = BTRFS_ROOT_ITEM_KEY;
 
        sk->min_objectid = BTRFS_FIRST_FREE_OBJECTID;
 
-       /*
-        * set all the other params to the max, we'll take any objectid
-        * and any trans
-        */
        sk->max_objectid = BTRFS_LAST_FREE_OBJECTID;
        sk->max_offset = (u64)-1;
        sk->max_transid = (u64)-1;
-
-       /* just a big number, doesn't matter much */
        sk->nr_items = 4096;
 
        while(1) {
                ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
                if (ret < 0)
                        return ret;
-               /* the ioctl returns the number of item it found in nr_items */
                if (sk->nr_items == 0)
                        break;
 
@@ -1052,17 +1041,13 @@ static int list_subvol_search(int fd, struct root_lookup *root_lookup)
 
                        off += sh.len;
 
-                       /*
-                        * record the mins in sk so we can make sure the
-                        * next search doesn't repeat this root
-                        */
                        sk->min_objectid = sh.objectid;
                        sk->min_type = sh.type;
                        sk->min_offset = sh.offset;
                }
                sk->nr_items = 4096;
                sk->min_offset++;
-               if (!sk->min_offset)    /* overflow */
+               if (!sk->min_offset)
                        sk->min_type++;
                else
                        continue;