btrfs: move file_extent_item helpers into file-item.h

These helpers use functions that are in multiple places, which makes it
tricky to sync them into btrfs-progs.  Move them to file-item.h and then
include file-item.h in places that use these helpers.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/accessors.h

@@ -915,16 +915,6 @@ BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
 			 struct btrfs_file_extent_item, compression, 8);
 
-static inline unsigned long btrfs_file_extent_inline_start(
-				const struct btrfs_file_extent_item *e)
-{
-	return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
-}
-
-static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
-{
-	return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
-}
 
 BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
@@ -946,18 +936,6 @@ BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
 BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
 		   other_encoding, 16);
 
-/*
- * Returns the number of bytes used by the item on disk, minus the size of any
- * extent headers.  If a file is compressed on disk, this is the compressed
- * size.
- */
-static inline u32 btrfs_file_extent_inline_item_len(
-						const struct extent_buffer *eb,
-						int nr)
-{
-	return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
-}
-
 /* btrfs_qgroup_status_item */
 BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
 		   generation, 64);

fs/btrfs/ctree.c

@@ -22,6 +22,7 @@
 #include "accessors.h"
 #include "extent-tree.h"
 #include "relocation.h"
+#include "file-item.h"
 
 static struct kmem_cache *btrfs_path_cachep;
 

fs/btrfs/ctree.h

@@ -461,14 +461,6 @@ static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info)
 	return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr);
 }
 
-#define BTRFS_FILE_EXTENT_INLINE_DATA_START		\
-		(offsetof(struct btrfs_file_extent_item, disk_bytenr))
-static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
-{
-	return BTRFS_MAX_ITEM_SIZE(info) -
-	       BTRFS_FILE_EXTENT_INLINE_DATA_START;
-}
-
 static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
 {
 	return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);

fs/btrfs/file-item.h

@@ -3,6 +3,39 @@
 #ifndef BTRFS_FILE_ITEM_H
 #define BTRFS_FILE_ITEM_H
 
+#include "accessors.h"
+
+#define BTRFS_FILE_EXTENT_INLINE_DATA_START		\
+		(offsetof(struct btrfs_file_extent_item, disk_bytenr))
+
+static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
+{
+	return BTRFS_MAX_ITEM_SIZE(info) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
+}
+
+/*
+ * Return the number of bytes used by the item on disk, minus the size of any
+ * extent headers.  If a file is compressed on disk, this is the compressed
+ * size.
+ */
+static inline u32 btrfs_file_extent_inline_item_len(
+						const struct extent_buffer *eb,
+						int nr)
+{
+	return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
+}
+
+static inline unsigned long btrfs_file_extent_inline_start(
+				const struct btrfs_file_extent_item *e)
+{
+	return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
+}
+
+static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
+{
+	return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
+}
+
 int btrfs_del_csums(struct btrfs_trans_handle *trans,
 		    struct btrfs_root *root, u64 bytenr, u64 len);
 blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u8 *dst);

fs/btrfs/tree-checker.c

@@ -28,6 +28,7 @@
 #include "btrfs_inode.h"
 #include "fs.h"
 #include "accessors.h"
+#include "file-item.h"
 
 /*
  * Error message should follow the following format: