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TAKE - small extension to the page buf stats interface

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Subject: TAKE - small extension to the page buf stats interface
From: Steve Lord <lord@xxxxxxx>
Date: Wed, 9 Aug 2000 17:14:40 -0500
Sender: owner-linux-xfs@xxxxxxxxxxx
Add a counter for the number of times we end up sleeping trying to
get a pagebuf lock.

Date:  Wed Aug  9 15:15:40 PDT 2000
Workarea:  jen.americas.sgi.com:/src/lord/xfs-linux.2.4.0-test5

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.0-test1-xfs


Modid:  2.4.0-test1-xfs:slinx:71722a
linux/include/linux/page_buf.h - 1.59
        - Add a new stat counter for page buf locks which have to sleep.  

linux/fs/pagebuf/page_buf_locking.c - 1.6
        - Add a new stat counter for page buf locks which have to sleep.



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