Btrfs: drop unused variable in block_alloc_rsv

The alloc_target variable is not really used.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index df75410..a541bc8 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3607,18 +3607,14 @@ struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root)
 {
        struct btrfs_block_rsv *block_rsv;
        struct btrfs_fs_info *fs_info = root->fs_info;
-       u64 alloc_target;
 
        block_rsv = kmalloc(sizeof(*block_rsv), GFP_NOFS);
        if (!block_rsv)
                return NULL;
 
        btrfs_init_block_rsv(block_rsv);
-
-       alloc_target = btrfs_get_alloc_profile(root, 0);
        block_rsv->space_info = __find_space_info(fs_info,
                                                  BTRFS_BLOCK_GROUP_METADATA);
-
        return block_rsv;
 }