From 17504584f52af944960f1ad16752aa10a0755b3b Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Sun, 29 Dec 2013 21:44:50 +0800 Subject: [PATCH] Btrfs: return free space to global_rsv as much as possible @full is not protected within global_rsv.lock, so we may think global_rsv is already full but in fact it's not, so we miss the opportunity to return free space to global_rsv directly when we release other block_rsvs. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 3d19dcc..41fe80b 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4674,7 +4674,7 @@ void btrfs_block_rsv_release(struct btrfs_root *root, u64 num_bytes) { struct btrfs_block_rsv *global_rsv = &root->fs_info->global_block_rsv; - if (global_rsv->full || global_rsv == block_rsv || + if (global_rsv == block_rsv || block_rsv->space_info != global_rsv->space_info) global_rsv = NULL; block_rsv_release_bytes(root->fs_info, block_rsv, global_rsv, -- 2.7.4