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[2/9] Btrfs-progs: search subvolumes with proper objectid

Message ID 1343987338-10612-4-git-send-email-Anand.Jain@oracle.com (mailing list archive)
State New, archived
Headers show

Commit Message

Anand Jain Aug. 3, 2012, 9:48 a.m. UTC 
From: Liu Bo <liubo2009@cn.fujitsu.com>

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>
---
 btrfs-list.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/btrfs-list.c b/btrfs-list.c
index 35e6139..680dd03 100644
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -585,11 +585,13 @@  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;
 
@@ -641,7 +643,7 @@  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;