btrfs: Remove unused variable in btrfs_get_extent

trans was statically assigned to NULL and this never changed over the
course of btrfs_get_extent. So remove any code which checks whether
trans != NULL and just hardcode the fact trans is always NULL.

Resolves-coverity-id: 112806
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e87ec11..8b6c59a 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6948,7 +6948,6 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
        struct extent_map *em = NULL;
        struct extent_map_tree *em_tree = &inode->extent_tree;
        struct extent_io_tree *io_tree = &inode->io_tree;
-       struct btrfs_trans_handle *trans = NULL;
        const bool new_inline = !page || create;
 
        read_lock(&em_tree->lock);
@@ -6989,8 +6988,7 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
                path->reada = READA_FORWARD;
        }
 
-       ret = btrfs_lookup_file_extent(trans, root, path,
-                                      objectid, start, trans != NULL);
+       ret = btrfs_lookup_file_extent(NULL, root, path, objectid, start, 0);
        if (ret < 0) {
                err = ret;
                goto out;
@@ -7186,11 +7184,6 @@ out:
        trace_btrfs_get_extent(root, inode, em);
 
        btrfs_free_path(path);
-       if (trans) {
-               ret = btrfs_end_transaction(trans);
-               if (!err)
-                       err = ret;
-       }
        if (err) {
                free_extent_map(em);
                return ERR_PTR(err);