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Btrfs-progs: search subvolumes with proper objectid 

Btrfs's subvolume/snapshot is limited to
[BTRFS_FIRST_FREE_OBJECTID, BTRFS_LAST_FREE_OBJECTID], so just apply the range.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
master
Liu Bo 2012-08-03 17:48:51 +08:00 committed by root
parent 50dcf9a5b4
commit a8975893cf
1 changed files with 4 additions and 2 deletions
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6
btrfs-list.c
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@ -634,11 +634,13 @@ static int __list_subvol_search(int fd, struct root_lookup *root_lookup)
sk->max_type = BTRFS_ROOT_BACKREF_KEY;
sk->min_type = BTRFS_ROOT_BACKREF_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 = (u64)-1;
sk->max_objectid = BTRFS_LAST_FREE_OBJECTID;
sk->max_offset = (u64)-1;
sk->max_transid = (u64)-1;
@ -690,7 +692,7 @@ static int __list_subvol_search(int fd, struct root_lookup *root_lookup)
if (sk->min_type < BTRFS_ROOT_BACKREF_KEY) {
sk->min_type = BTRFS_ROOT_BACKREF_KEY;
sk->min_offset = 0;
} else if (sk->min_objectid < (u64)-1) {
} else if (sk->min_objectid < BTRFS_LAST_FREE_OBJECTID) {
sk->min_objectid++;
sk->min_type = BTRFS_ROOT_BACKREF_KEY;
sk->min_offset = 0;