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Update documentation for inode32 allocator rotorstep change.
Merge of 2.6.x-xfs-melb:linux:19817a by kenmcd.

Index: 2.6.x-xfs/Documentation/filesystems/xfs.txt
===================================================================
--- 2.6.x-xfs.orig/Documentation/filesystems/xfs.txt	Tue Oct 12 09:49:13 2004
+++ 2.6.x-xfs/Documentation/filesystems/xfs.txt	Tue Oct 19 10:19:23 2004
@@ -181,17 +181,24 @@
   	Controls whether unprivileged users can use chown to "give away"
 	a file to another user.
 
-  fs.xfs.inherit_sync		(Min: 0  Default: 1  Max 1)
+  fs.xfs.inherit_sync		(Min: 0  Default: 1  Max: 1)
 	Setting this to "1" will cause the "sync" flag set 
 	by the chattr(1) command on a directory to be
 	inherited by files in that directory.
 
-  fs.xfs.inherit_nodump		(Min: 0  Default: 1  Max 1)
+  fs.xfs.inherit_nodump		(Min: 0  Default: 1  Max: 1)
 	Setting this to "1" will cause the "nodump" flag set 
 	by the chattr(1) command on a directory to be
 	inherited by files in that directory.
 
-  fs.xfs.inherit_noatime	(Min: 0  Default: 1  Max 1)
+  fs.xfs.inherit_noatime	(Min: 0  Default: 1  Max: 1)
 	Setting this to "1" will cause the "noatime" flag set 
 	by the chattr(1) command on a directory to be
 	inherited by files in that directory.
+
+  fs.xfs.rotorstep		(Min: 1  Default: 1  Max: 256)
+	In "inode32" allocation mode, this option determines how many
+	files the allocator attempts to allocate in the same allocation
+	group before moving to the next allocation group.  The intent
+	is to control the rate at which the allocator moves between
+	allocation groups when allocating extents for new files.