btrfs: use write_extent_buffer() to implement write_extent_buffer_*id()

[sfrench/cifs-2.6.git] / fs / btrfs / extent_io.h

diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index c01f9c5ddc13c06fdee955395804b58d72bb3604..adda14c1b763e342126587cad1f952049572719a 100644 (file)
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -236,11 +236,24 @@ void read_extent_buffer(const struct extent_buffer *eb, void *dst,
 int read_extent_buffer_to_user_nofault(const struct extent_buffer *eb,
                                       void __user *dst, unsigned long start,
                                       unsigned long len);
-void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *src);
-void write_extent_buffer_chunk_tree_uuid(const struct extent_buffer *eb,
-               const void *src);
 void write_extent_buffer(const struct extent_buffer *eb, const void *src,
                         unsigned long start, unsigned long len);
+
+static inline void write_extent_buffer_chunk_tree_uuid(
+               const struct extent_buffer *eb, const void *chunk_tree_uuid)
+{
+       write_extent_buffer(eb, chunk_tree_uuid,
+                           offsetof(struct btrfs_header, chunk_tree_uuid),
+                           BTRFS_FSID_SIZE);
+}
+
+static inline void write_extent_buffer_fsid(const struct extent_buffer *eb,
+                                           const void *fsid)
+{
+       write_extent_buffer(eb, fsid, offsetof(struct btrfs_header, fsid),
+                           BTRFS_FSID_SIZE);
+}
+
 void copy_extent_buffer_full(const struct extent_buffer *dst,
                             const struct extent_buffer *src);
 void copy_extent_buffer(const struct extent_buffer *dst,