[patch] trivial doc patch for partitions

[Martin Pool <mbp@sourcefrog.net>]

It's slightly hard to see how these variables are used; this patch
adds a short description.

I am planning to change rescan_partitions so that it allows you to
change partitions on a disk that has active partitions, so long as the
active partitions themselves are not changed.  Would anyone object?


Index: linux-2.6/include/linux/fs.h
===================================================================
--- linux-2.6.orig/include/linux/fs.h	2004-06-18 15:16:35.000000000 -0700
+++ linux-2.6/include/linux/fs.h	2004-07-27 11:50:01.483618248 -0700
@@ -354,6 +354,7 @@
 	struct block_device *	bd_contains;
 	unsigned		bd_block_size;
 	struct hd_struct *	bd_part;
+	/* number of times partitions within this device have been opened. */
 	unsigned		bd_part_count;
 	int			bd_invalidated;
 	struct gendisk *	bd_disk;
Index: linux-2.6/include/linux/genhd.h
===================================================================
--- linux-2.6.orig/include/linux/genhd.h	2004-03-14 19:24:17.000000000 -0800
+++ linux-2.6/include/linux/genhd.h	2004-07-25 09:58:22.000000000 -0700
@@ -82,7 +82,8 @@
 struct gendisk {
 	int major;			/* major number of driver */
 	int first_minor;
-	int minors;
+	int minors;                     /* maximum number of minors, =1 for
+                                         * disks that can't be partitioned. */
 	char disk_name[32];		/* name of major driver */
 	struct hd_struct **part;	/* [indexed by minor] */
 	struct block_device_operations *fops;


-- 
Martin