btrfs: make cow_file_range take btrfs_inode

All its children functions take btrfs_inode so convert it to taking
btrfs_inode.
Signed-off-by: NNikolay Borisov <nborisov@suse.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -80,7 +80,7 @@ struct kmem_cache *btrfs_free_space_bitmap_cachep;
 static int btrfs_setsize(struct inode *inode, struct iattr *attr);
 static int btrfs_truncate(struct inode *inode, bool skip_writeback);
 static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent);
-static noinline int cow_file_range(struct inode *inode,
+static noinline int cow_file_range(struct btrfs_inode *inode,
 				   struct page *locked_page,
 				   u64 start, u64 end, int *page_started,
 				   unsigned long *nr_written, int unlock);
@@ -789,7 +789,8 @@ static noinline void submit_compressed_extents(struct async_chunk *async_chunk)
 			unsigned long nr_written = 0;
 
 			/* allocate blocks */
-			ret = cow_file_range(inode, async_chunk->locked_page,
+			ret = cow_file_range(BTRFS_I(inode),
+					     async_chunk->locked_page,
 					     async_extent->start,
 					     async_extent->start +
 					     async_extent->ram_size - 1,
@@ -976,13 +977,13 @@ static u64 get_extent_allocation_hint(struct btrfs_inode *inode, u64 start,
  * required to start IO on it.  It may be clean and already done with
  * IO when we return.
  */
-static noinline int cow_file_range(struct inode *inode,
+static noinline int cow_file_range(struct btrfs_inode *inode,
 				   struct page *locked_page,
 				   u64 start, u64 end, int *page_started,
 				   unsigned long *nr_written, int unlock)
 {
-	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
-	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_root *root = inode->root;
+	struct btrfs_fs_info *fs_info = root->fs_info;
 	u64 alloc_hint = 0;
 	u64 num_bytes;
 	unsigned long ram_size;
@@ -996,7 +997,7 @@ static noinline int cow_file_range(struct inode *inode,
 	bool extent_reserved = false;
 	int ret = 0;
 
-	if (btrfs_is_free_space_inode(BTRFS_I(inode))) {
+	if (btrfs_is_free_space_inode(inode)) {
 		WARN_ON_ONCE(1);
 		ret = -EINVAL;
 		goto out_unlock;
@@ -1006,11 +1007,11 @@ static noinline int cow_file_range(struct inode *inode,
 	num_bytes = max(blocksize,  num_bytes);
 	ASSERT(num_bytes <= btrfs_super_total_bytes(fs_info->super_copy));
 
-	inode_should_defrag(BTRFS_I(inode), start, end, num_bytes, SZ_64K);
+	inode_should_defrag(inode, start, end, num_bytes, SZ_64K);
 
 	if (start == 0) {
 		/* lets try to make an inline extent */
-		ret = cow_file_range_inline(BTRFS_I(inode), start, end, 0,
+		ret = cow_file_range_inline(inode, start, end, 0,
 					    BTRFS_COMPRESS_NONE, NULL);
 		if (ret == 0) {
 			/*
@@ -1019,8 +1020,7 @@ static noinline int cow_file_range(struct inode *inode,
 			 * our outstanding extent for clearing delalloc for this
 			 * range.
 			 */
-			extent_clear_unlock_delalloc(BTRFS_I(inode), start, end,
-				     NULL,
+			extent_clear_unlock_delalloc(inode, start, end, NULL,
 				     EXTENT_LOCKED | EXTENT_DELALLOC |
 				     EXTENT_DELALLOC_NEW | EXTENT_DEFRAG |
 				     EXTENT_DO_ACCOUNTING, PAGE_UNLOCK |
@@ -1035,10 +1035,8 @@ static noinline int cow_file_range(struct inode *inode,
 		}
 	}
 
-	alloc_hint = get_extent_allocation_hint(BTRFS_I(inode), start,
-						num_bytes);
-	btrfs_drop_extent_cache(BTRFS_I(inode), start,
-			start + num_bytes - 1, 0);
+	alloc_hint = get_extent_allocation_hint(inode, start, num_bytes);
+	btrfs_drop_extent_cache(inode, start, start + num_bytes - 1, 0);
 
 	/*
 	 * Relocation relies on the relocated extents to have exactly the same
@@ -1067,7 +1065,7 @@ static noinline int cow_file_range(struct inode *inode,
 		extent_reserved = true;
 
 		ram_size = ins.offset;
-		em = create_io_em(BTRFS_I(inode), start, ins.offset, /* len */
+		em = create_io_em(inode, start, ins.offset, /* len */
 				  start, /* orig_start */
 				  ins.objectid, /* block_start */
 				  ins.offset, /* block_len */
@@ -1081,15 +1079,14 @@ static noinline int cow_file_range(struct inode *inode,
 		}
 		free_extent_map(em);
 
-		ret = btrfs_add_ordered_extent(BTRFS_I(inode), start,
-					       ins.objectid, ram_size,
-					       cur_alloc_size, 0);
+		ret = btrfs_add_ordered_extent(inode, start, ins.objectid,
+					       ram_size, cur_alloc_size, 0);
 		if (ret)
 			goto out_drop_extent_cache;
 
 		if (root->root_key.objectid ==
 		    BTRFS_DATA_RELOC_TREE_OBJECTID) {
-			ret = btrfs_reloc_clone_csums(BTRFS_I(inode), start,
+			ret = btrfs_reloc_clone_csums(inode, start,
 						      cur_alloc_size);
 			/*
 			 * Only drop cache here, and process as normal.
@@ -1103,7 +1100,7 @@ static noinline int cow_file_range(struct inode *inode,
 			 * skip current ordered extent.
 			 */
 			if (ret)
-				btrfs_drop_extent_cache(BTRFS_I(inode), start,
+				btrfs_drop_extent_cache(inode, start,
 						start + ram_size - 1, 0);
 		}
 
@@ -1119,8 +1116,7 @@ static noinline int cow_file_range(struct inode *inode,
 		page_ops = unlock ? PAGE_UNLOCK : 0;
 		page_ops |= PAGE_SET_PRIVATE2;
 
-		extent_clear_unlock_delalloc(BTRFS_I(inode), start,
-					     start + ram_size - 1,
+		extent_clear_unlock_delalloc(inode, start, start + ram_size - 1,
 					     locked_page,
 					     EXTENT_LOCKED | EXTENT_DELALLOC,
 					     page_ops);
@@ -1144,7 +1140,7 @@ static noinline int cow_file_range(struct inode *inode,
 	return ret;
 
 out_drop_extent_cache:
-	btrfs_drop_extent_cache(BTRFS_I(inode), start, start + ram_size - 1, 0);
+	btrfs_drop_extent_cache(inode, start, start + ram_size - 1, 0);
 out_reserve:
 	btrfs_dec_block_group_reservations(fs_info, ins.objectid);
 	btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 1);
@@ -1164,7 +1160,7 @@ static noinline int cow_file_range(struct inode *inode,
 	 * it the flag EXTENT_CLEAR_DATA_RESV.
 	 */
 	if (extent_reserved) {
-		extent_clear_unlock_delalloc(BTRFS_I(inode), start,
+		extent_clear_unlock_delalloc(inode, start,
 					     start + cur_alloc_size - 1,
 					     locked_page,
 					     clear_bits,
@@ -1173,7 +1169,7 @@ static noinline int cow_file_range(struct inode *inode,
 		if (start >= end)
 			goto out;
 	}
-	extent_clear_unlock_delalloc(BTRFS_I(inode), start, end, locked_page,
+	extent_clear_unlock_delalloc(inode, start, end, locked_page,
 				     clear_bits | EXTENT_CLEAR_DATA_RESV,
 				     page_ops);
 	goto out;
@@ -1441,8 +1437,8 @@ static int fallback_to_cow(struct inode *inode, struct page *locked_page,
 					 0, 0, NULL);
 	}
 
-	return cow_file_range(inode, locked_page, start, end, page_started,
-			      nr_written, 1);
+	return cow_file_range(BTRFS_I(inode), locked_page, start, end,
+			      page_started, nr_written, 1);
 }
 
 /*
@@ -1838,7 +1834,7 @@ int btrfs_run_delalloc_range(struct inode *inode, struct page *locked_page,
 					 page_started, 0, nr_written);
 	} else if (!inode_can_compress(inode) ||
 		   !inode_need_compress(inode, start, end)) {
-		ret = cow_file_range(inode, locked_page, start, end,
+		ret = cow_file_range(BTRFS_I(inode), locked_page, start, end,
 				      page_started, nr_written, 1);
 	} else {
 		set_bit(BTRFS_INODE_HAS_ASYNC_EXTENT,