btrfs: move file prototypes to file.h

Move these out of ctree.h into file.h to cut down on code in ctree.h.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ctree.h

@@ -688,32 +688,6 @@ int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
 int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root, u64 offset);
 
-/* file.c */
-int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
-extern const struct file_operations btrfs_file_operations;
-int btrfs_drop_extents(struct btrfs_trans_handle *trans,
-		       struct btrfs_root *root, struct btrfs_inode *inode,
-		       struct btrfs_drop_extents_args *args);
-int btrfs_replace_file_extents(struct btrfs_inode *inode,
-			   struct btrfs_path *path, const u64 start,
-			   const u64 end,
-			   struct btrfs_replace_extent_info *extent_info,
-			   struct btrfs_trans_handle **trans_out);
-int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
-			      struct btrfs_inode *inode, u64 start, u64 end);
-ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from,
-			    const struct btrfs_ioctl_encoded_io_args *encoded);
-int btrfs_release_file(struct inode *inode, struct file *file);
-int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,
-		      size_t num_pages, loff_t pos, size_t write_bytes,
-		      struct extent_state **cached, bool noreserve);
-int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end);
-int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos,
-			   size_t *write_bytes, bool nowait);
-void btrfs_check_nocow_unlock(struct btrfs_inode *inode);
-bool btrfs_find_delalloc_in_range(struct btrfs_inode *inode, u64 start, u64 end,
-				  u64 *delalloc_start_ret, u64 *delalloc_end_ret);
-
 /* super.c */
 int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
 			unsigned long new_flags);

fs/btrfs/extent_io.c

@@ -33,6 +33,7 @@
 #include "fs.h"
 #include "accessors.h"
 #include "file-item.h"
+#include "file.h"
 
 static struct kmem_cache *extent_buffer_cache;
 

fs/btrfs/file.c

@@ -35,6 +35,7 @@
 #include "extent-tree.h"
 #include "file-item.h"
 #include "ioctl.h"
+#include "file.h"
 
 /* simple helper to fault in pages and copy.  This should go away
  * and be replaced with calls into generic code.

fs/btrfs/file.h

@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef BTRFS_FILE_H
+#define BTRFS_FILE_H
+
+extern const struct file_operations btrfs_file_operations;
+
+int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
+int btrfs_drop_extents(struct btrfs_trans_handle *trans,
+		       struct btrfs_root *root, struct btrfs_inode *inode,
+		       struct btrfs_drop_extents_args *args);
+int btrfs_replace_file_extents(struct btrfs_inode *inode,
+			   struct btrfs_path *path, const u64 start,
+			   const u64 end,
+			   struct btrfs_replace_extent_info *extent_info,
+			   struct btrfs_trans_handle **trans_out);
+int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
+			      struct btrfs_inode *inode, u64 start, u64 end);
+ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from,
+			    const struct btrfs_ioctl_encoded_io_args *encoded);
+int btrfs_release_file(struct inode *inode, struct file *file);
+int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,
+		      size_t num_pages, loff_t pos, size_t write_bytes,
+		      struct extent_state **cached, bool noreserve);
+int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end);
+int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos,
+			   size_t *write_bytes, bool nowait);
+void btrfs_check_nocow_unlock(struct btrfs_inode *inode);
+bool btrfs_find_delalloc_in_range(struct btrfs_inode *inode, u64 start, u64 end,
+				  u64 *delalloc_start_ret, u64 *delalloc_end_ret);
+
+#endif

fs/btrfs/free-space-cache.c

@@ -28,6 +28,7 @@
 #include "inode-item.h"
 #include "accessors.h"
 #include "file-item.h"
+#include "file.h"
 
 #define BITS_PER_BITMAP		(PAGE_SIZE * 8UL)
 #define MAX_CACHE_BYTES_PER_GIG	SZ_64K

fs/btrfs/inode.c

@@ -64,6 +64,7 @@
 #include "file-item.h"
 #include "uuid-tree.h"
 #include "ioctl.h"
+#include "file.h"
 
 struct btrfs_iget_args {
 	u64 ino;

fs/btrfs/ioctl.c

@@ -58,6 +58,7 @@
 #include "dir-item.h"
 #include "uuid-tree.h"
 #include "ioctl.h"
+#include "file.h"
 
 #ifdef CONFIG_64BIT
 /* If we have a 32-bit userspace and 64-bit kernel, then the UAPI

fs/btrfs/ordered-data.c

@@ -18,6 +18,7 @@
 #include "delalloc-space.h"
 #include "qgroup.h"
 #include "subpage.h"
+#include "file.h"
 
 static struct kmem_cache *btrfs_ordered_extent_cache;
 

fs/btrfs/reflink.c

@@ -13,6 +13,7 @@
 #include "subpage.h"
 #include "accessors.h"
 #include "file-item.h"
+#include "file.h"
 
 #define BTRFS_MAX_DEDUPE_LEN	SZ_16M
 

fs/btrfs/tree-log.c

@@ -27,6 +27,7 @@
 #include "root-tree.h"
 #include "dir-item.h"
 #include "file-item.h"
+#include "file.h"
 
 #define MAX_CONFLICT_INODES 10