[PATCH 16/20] btrfs: relocation: remove unnecessary calls to btrfs_mark_buffer_dirty()

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

We have several places explicitly calling btrfs_mark_buffer_dirty() but
that is not necessarily since the target leaf came from a path that was
obtained for a btree search function that modifies the btree, something
like btrfs_insert_empty_item() or anything else that ends up calling
btrfs_search_slot() with a value of 1 for its 'cow' argument.

These just make the code more verbose, confusing and add a little extra
overhead and well as increase the module's text size, so remove them.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
---
 fs/btrfs/relocation.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index cdd9a7b15a11..d4100e58172f 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -856,7 +856,6 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
 	u32 i;
 	int ret = 0;
 	int first = 1;
-	int dirty = 0;
 
 	if (rc->stage != UPDATE_DATA_PTRS)
 		return 0;
@@ -936,7 +935,6 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
 		}
 
 		btrfs_set_file_extent_disk_bytenr(leaf, fi, new_bytenr);
-		dirty = 1;
 
 		key.offset -= btrfs_file_extent_offset(leaf, fi);
 		ref.action = BTRFS_ADD_DELAYED_REF;
@@ -967,8 +965,6 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
 			break;
 		}
 	}
-	if (dirty)
-		btrfs_mark_buffer_dirty(trans, leaf);
 	if (inode)
 		btrfs_add_delayed_iput(inode);
 	return ret;
@@ -1161,13 +1157,11 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc,
 		 */
 		btrfs_set_node_blockptr(parent, slot, new_bytenr);
 		btrfs_set_node_ptr_generation(parent, slot, new_ptr_gen);
-		btrfs_mark_buffer_dirty(trans, parent);
 
 		btrfs_set_node_blockptr(path->nodes[level],
 					path->slots[level], old_bytenr);
 		btrfs_set_node_ptr_generation(path->nodes[level],
 					      path->slots[level], old_ptr_gen);
-		btrfs_mark_buffer_dirty(trans, path->nodes[level]);
 
 		ref.action = BTRFS_ADD_DELAYED_REF;
 		ref.bytenr = old_bytenr;
@@ -3728,7 +3722,6 @@ static int __insert_orphan_inode(struct btrfs_trans_handle *trans,
 	btrfs_set_inode_mode(leaf, item, S_IFREG | 0600);
 	btrfs_set_inode_flags(leaf, item, BTRFS_INODE_NOCOMPRESS |
 					  BTRFS_INODE_PREALLOC);
-	btrfs_mark_buffer_dirty(trans, leaf);
 out:
 	btrfs_free_path(path);
 	return ret;
-- 
2.45.2