btrfs: drop gfp parameter from find_extent_buffer

pass GFP_NOFS directly to kmem_cache_alloc
Signed-off-by: NDavid Sterba <dsterba@suse.cz>

fs/btrfs/disk-io.c

@@ -963,7 +963,7 @@ struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
 	struct inode *btree_inode = root->fs_info->btree_inode;
 	struct extent_buffer *eb;
 	eb = find_extent_buffer(&BTRFS_I(btree_inode)->io_tree,
-				bytenr, blocksize, GFP_NOFS);
+				bytenr, blocksize);
 	return eb;
 }
 
@@ -2696,7 +2696,7 @@ int btree_lock_page_hook(struct page *page)
 		goto out;
 
 	len = page->private >> 2;
-	eb = find_extent_buffer(io_tree, bytenr, len, GFP_NOFS);
+	eb = find_extent_buffer(io_tree, bytenr, len);
 	if (!eb)
 		goto out;
 

fs/btrfs/extent_io.c

@@ -3377,8 +3377,7 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
 }
 
 struct extent_buffer *find_extent_buffer(struct extent_io_tree *tree,
-					 u64 start, unsigned long len,
-					  gfp_t mask)
+					 u64 start, unsigned long len)
 {
 	struct extent_buffer *eb;
 

fs/btrfs/extent_io.h

@@ -263,8 +263,7 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
 					  struct page *page0,
 					  gfp_t mask);
 struct extent_buffer *find_extent_buffer(struct extent_io_tree *tree,
-					 u64 start, unsigned long len,
-					  gfp_t mask);
+					 u64 start, unsigned long len);
 void free_extent_buffer(struct extent_buffer *eb);
 int read_extent_buffer_pages(struct extent_io_tree *tree,
 			     struct extent_buffer *eb, u64 start, int wait,