btrfs-progs: volumes: Remove unnecessary trans parameter

Remove @trans parameter for find_free_dev_extent_start() and its
callers.

The function itself is doing read-only tree search, no use of
transaction.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/volumes.c b/volumes.c
index 1fda594..a9ce0bf 100644 (file)
--- a/volumes.c
+++ b/volumes.c
@@ -309,9 +309,9 @@ int btrfs_scan_one_device(int fd, const char *path,
  * But if we don't find suitable free space, it is used to store the size of
  * the max free space.
  */
-static int find_free_dev_extent_start(struct btrfs_trans_handle *trans,
-                              struct btrfs_device *device, u64 num_bytes,
-                              u64 search_start, u64 *start, u64 *len)
+static int find_free_dev_extent_start(struct btrfs_device *device,
+                                     u64 num_bytes, u64 search_start,
+                                     u64 *start, u64 *len)
 {
        struct btrfs_key key;
        struct btrfs_root *root = device->dev_root;
@@ -450,13 +450,11 @@ out:
        return ret;
 }
 
-static int find_free_dev_extent(struct btrfs_trans_handle *trans,
-                        struct btrfs_device *device, u64 num_bytes,
-                        u64 *start)
+static int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
+                               u64 *start)
 {
        /* FIXME use last free of some kind */
-       return find_free_dev_extent_start(trans, device,
-                                         num_bytes, 0, start, NULL);
+       return find_free_dev_extent_start(device, num_bytes, 0, start, NULL);
 }
 
 static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
@@ -481,8 +479,7 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
         * is responsible to make sure it's free.
         */
        if (!convert) {
-               ret = find_free_dev_extent(trans, device, num_bytes,
-                                          start);
+               ret = find_free_dev_extent(device, num_bytes, start);
                if (ret)
                        goto err;
        }