[PATCH] fuse: add bmap support

Add support for the BMAP operation for block device based filesystems.  This
is needed to support swap-files and lilo.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/fuse.h b/include/linux/fuse.h
index 7633632..162a754 100644
--- a/include/linux/fuse.h
+++ b/include/linux/fuse.h
@@ -132,6 +132,7 @@
 	FUSE_ACCESS        = 34,
 	FUSE_CREATE        = 35,
 	FUSE_INTERRUPT     = 36,
+	FUSE_BMAP          = 37,
 };
 
 /* The read buffer is required to be at least 8k, but may be much larger */
@@ -302,6 +303,16 @@
 	__u64	unique;
 };
 
+struct fuse_bmap_in {
+	__u64	block;
+	__u32	blocksize;
+	__u32	padding;
+};
+
+struct fuse_bmap_out {
+	__u64	block;
+};
+
 struct fuse_in_header {
 	__u32	len;
 	__u32	opcode;