XFS: update pagebuf comments

Date:  Fri Sep 13 06:24:23 PDT 2002
Workarea:  dhcp212.munich.sgi.com:/home/hch/repo/ptools/linux-2.5-xfs
Author:  hch
Merged by:  hch
Merged mods:  2.4.x-xfs:slinx:127345a

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.5.x-xfs


Modid:  2.5.x-xfs:slinx:127345a
linux/fs/xfs/pagebuf/page_buf_locking.c - 1.28
linux/fs/xfs/pagebuf/page_buf.c - 1.58
	- Merge of 2.4.x-xfs:slinx:127345a by hch.
	  Fix up comments:  Pagebuf is only used for metadata nowdays

fs/xfs/pagebuf/page_buf.c

@@ -34,12 +34,10 @@
  *	page_buf.c
  *
  *	The page_buf module provides an abstract buffer cache model on top of
- *	the Linux page cache.  Cached blocks for a file are hashed to the
- *	inode for that file, and can be held dirty in delayed write mode in
- *	the page cache.	 Cached metadata blocks for a file system are hashed
- *	to the inode for the mounted device.  The page_buf module assembles
- *	buffer (page_buf_t) objects on demand to aggregate such cached pages
- *	for I/O.
+ *	the Linux page cache.  Cached metadata blocks for a file system are
+ *	hashed to the inode for the block device.  The page_buf module
+ *	assembles buffer (page_buf_t) objects on demand to aggregate such
+ *	cached pages for I/O.
  *
  *
  *	Written by Steve Lord, Jim Mostek, Russell Cattelan

fs/xfs/pagebuf/page_buf_locking.c

@@ -35,13 +35,11 @@
  *	page_buf_locking.c
  *
  *	The page_buf module provides an abstract buffer cache model on top of
- *	the Linux page cache.  Cached blocks for a file are hashed to the
- *	inode for that file, and can be held dirty in delayed write mode in
- *	the page cache.	 Cached metadata blocks for a file system are hashed
- *	to the inode for the mounted device.  The page_buf module assembles
- *	buffer (page_buf_t) objects on demand to aggregate such cached pages
- *	for I/O.  The page_buf_locking module adds support for locking such
- *	page buffers.
+ *	the Linux page cache.  Cached metadata blocks for a file system are
+ *	hashed to the inode for the block device.  The page_buf module
+ *	assembles buffer (page_buf_t) objects on demand to aggregate such
+ *	cached pages for I/O.  The page_buf_locking module adds support for
+ *	locking such page buffers.
  *
  *	Written by Steve Lord at SGI
  *