btrfs: make run_delalloc_nocow take btrfs_inode

It only really uses btrfs_inode.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -1444,28 +1444,27 @@ static int fallback_to_cow(struct btrfs_inode *inode, struct page *locked_page,
  * If no cow copies or snapshots exist, we write directly to the existing
  * blocks on disk
  */
-static noinline int run_delalloc_nocow(struct inode *inode,
+static noinline int run_delalloc_nocow(struct btrfs_inode *inode,
 				       struct page *locked_page,
 				       const u64 start, const u64 end,
 				       int *page_started, int force,
 				       unsigned long *nr_written)
 {
-	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
-	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_fs_info *fs_info = inode->root->fs_info;
+	struct btrfs_root *root = inode->root;
 	struct btrfs_path *path;
 	u64 cow_start = (u64)-1;
 	u64 cur_offset = start;
 	int ret;
 	bool check_prev = true;
-	const bool freespace_inode = btrfs_is_free_space_inode(BTRFS_I(inode));
-	u64 ino = btrfs_ino(BTRFS_I(inode));
+	const bool freespace_inode = btrfs_is_free_space_inode(inode);
+	u64 ino = btrfs_ino(inode);
 	bool nocow = false;
 	u64 disk_bytenr = 0;
 
 	path = btrfs_alloc_path();
 	if (!path) {
-		extent_clear_unlock_delalloc(BTRFS_I(inode), start, end,
-					     locked_page,
+		extent_clear_unlock_delalloc(inode, start, end, locked_page,
 					     EXTENT_LOCKED | EXTENT_DELALLOC |
 					     EXTENT_DO_ACCOUNTING |
 					     EXTENT_DEFRAG, PAGE_UNLOCK |
@@ -1685,7 +1684,7 @@ static noinline int run_delalloc_nocow(struct inode *inode,
 		 * NOCOW, following one which needs to be COW'ed
 		 */
 		if (cow_start != (u64)-1) {
-			ret = fallback_to_cow(BTRFS_I(inode), locked_page,
+			ret = fallback_to_cow(inode, locked_page,
 					      cow_start, found_key.offset - 1,
 					      page_started, nr_written);
 			if (ret)
@@ -1697,7 +1696,7 @@ static noinline int run_delalloc_nocow(struct inode *inode,
 			u64 orig_start = found_key.offset - extent_offset;
 			struct extent_map *em;
 
-			em = create_io_em(BTRFS_I(inode), cur_offset, num_bytes,
+			em = create_io_em(inode, cur_offset, num_bytes,
 					  orig_start,
 					  disk_bytenr, /* block_start */
 					  num_bytes, /* block_len */
@@ -1709,19 +1708,18 @@ static noinline int run_delalloc_nocow(struct inode *inode,
 				goto error;
 			}
 			free_extent_map(em);
-			ret = btrfs_add_ordered_extent(BTRFS_I(inode), cur_offset,
+			ret = btrfs_add_ordered_extent(inode, cur_offset,
 						       disk_bytenr, num_bytes,
 						       num_bytes,
 						       BTRFS_ORDERED_PREALLOC);
 			if (ret) {
-				btrfs_drop_extent_cache(BTRFS_I(inode),
-							cur_offset,
+				btrfs_drop_extent_cache(inode, cur_offset,
 							cur_offset + num_bytes - 1,
 							0);
 				goto error;
 			}
 		} else {
-			ret = btrfs_add_ordered_extent(BTRFS_I(inode), cur_offset,
+			ret = btrfs_add_ordered_extent(inode, cur_offset,
 						       disk_bytenr, num_bytes,
 						       num_bytes,
 						       BTRFS_ORDERED_NOCOW);
@@ -1740,10 +1738,10 @@ static noinline int run_delalloc_nocow(struct inode *inode,
 			 * extent_clear_unlock_delalloc() in error handler
 			 * from freeing metadata of created ordered extent.
 			 */
-			ret = btrfs_reloc_clone_csums(BTRFS_I(inode), cur_offset,
+			ret = btrfs_reloc_clone_csums(inode, cur_offset,
 						      num_bytes);
 
-		extent_clear_unlock_delalloc(BTRFS_I(inode), cur_offset,
+		extent_clear_unlock_delalloc(inode, cur_offset,
 					     cur_offset + num_bytes - 1,
 					     locked_page, EXTENT_LOCKED |
 					     EXTENT_DELALLOC |
@@ -1769,8 +1767,8 @@ static noinline int run_delalloc_nocow(struct inode *inode,
 
 	if (cow_start != (u64)-1) {
 		cur_offset = end;
-		ret = fallback_to_cow(BTRFS_I(inode), locked_page, cow_start,
-				      end, page_started, nr_written);
+		ret = fallback_to_cow(inode, locked_page, cow_start, end,
+				      page_started, nr_written);
 		if (ret)
 			goto error;
 	}
@@ -1780,7 +1778,7 @@ static noinline int run_delalloc_nocow(struct inode *inode,
 		btrfs_dec_nocow_writers(fs_info, disk_bytenr);
 
 	if (ret && cur_offset < end)
-		extent_clear_unlock_delalloc(BTRFS_I(inode), cur_offset, end,
+		extent_clear_unlock_delalloc(inode, cur_offset, end,
 					     locked_page, EXTENT_LOCKED |
 					     EXTENT_DELALLOC | EXTENT_DEFRAG |
 					     EXTENT_DO_ACCOUNTING, PAGE_UNLOCK |
@@ -1823,10 +1821,10 @@ int btrfs_run_delalloc_range(struct inode *inode, struct page *locked_page,
 	int force_cow = need_force_cow(inode, start, end);
 
 	if (BTRFS_I(inode)->flags & BTRFS_INODE_NODATACOW && !force_cow) {
-		ret = run_delalloc_nocow(inode, locked_page, start, end,
+		ret = run_delalloc_nocow(BTRFS_I(inode), locked_page, start, end,
 					 page_started, 1, nr_written);
 	} else if (BTRFS_I(inode)->flags & BTRFS_INODE_PREALLOC && !force_cow) {
-		ret = run_delalloc_nocow(inode, locked_page, start, end,
+		ret = run_delalloc_nocow(BTRFS_I(inode), locked_page, start, end,
 					 page_started, 0, nr_written);
 	} else if (!inode_can_compress(inode) ||
 		   !inode_need_compress(inode, start, end)) {