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 <dste...@suse.cz>
Signed-off-by: Ilya Dryomov <idryo...@gmail.com>
---
fs/btrfs/volumes.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 15f6efd..7e41619 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2615,7 +2615,7 @@ 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
--
1.7.9.1
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