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TAKE - fix use of kmap and kunmap in xfs address space ops

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Subject: TAKE - fix use of kmap and kunmap in xfs address space ops
From: Steve Lord <lord@xxxxxxx>
Date: Wed, 31 Jan 2001 13:16:31 -0600
Sender: owner-linux-xfs@xxxxxxxxxxx
XFS was not leaving highmem pages kmapped after the prepare_write
call. This reworks when we map and unmap pages in pagebuf to give
the expected behavior. Probably will not affect people using xfs
except maybe with loop devices on highmem systems.

Date:  Wed Jan 31 11:14:05 PST 2001
Workarea:  128.162.184.86:/src/lord/linux-jen

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.x-xfs


Modid:  2.4.x-xfs:slinx:84534a
linux/fs/pagebuf/page_buf_io.c - 1.47
        - Do the correct thing with prepare_write and commit_write and kmapping 
pages.



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