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authorIlya Dryomov <idryomov@gmail.com>2013-02-12 16:28:59 +0000
committerJosef Bacik <jbacik@fusionio.com>2013-02-20 12:59:54 -0500
commit3e39cea61c4ecb5774c08f3e30507fdd58c1cca9 (patch)
tree6f3f4600f5bb0fa8aebf6847bebcd96b0aa7631c
parentbf023ecfcaf114c410759f375073e78b0871c120 (diff)
Btrfs: allow for selecting only completely empty chunks
Enhance balance usage filter by making it possible to balance out only completely empty chunks. Today, usage filter properly acts on values from 1 to 99 inclusive, usage=100 selects all chunks, and usage=0 selects no chunks. This commit changes the usage=0 case: the new meaning is to restripe only completely empty chunks and nothing else. Suggested-by: David Sterba <dsterba@suse.cz> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
-rw-r--r--fs/btrfs/volumes.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d778e9666597..567076542d1d 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2679,7 +2679,7 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset,
chunk_used = btrfs_block_group_used(&cache->item);
if (bargs->usage == 0)
- user_thresh = 0;
+ user_thresh = 1;
else if (bargs->usage > 100)
user_thresh = cache->key.offset;
else