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TAKE - start of work to access realtime device

Subject: TAKE - start of work to access realtime device
From: Steve Lord <lord@xxxxxxx>
Date: Fri, 8 Jun 2001 22:27:26 -0500
Sender: owner-linux-xfs@xxxxxxxxxxx
Been running with this for days without problem, no actual
realtime testing yet, but this at least gives us the
technology to get there.

Date:  Fri Jun  8 20:23:46 PDT 2001
Workarea:  jen.americas.sgi.com:/src/lord/xfs-base

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


Modid:  2.4.x-xfs:slinx:96615a
linux/fs/xfs/linux/xfs_lrw.c - 1.101
        - Fill in pb_dev to indicate target device for I/O

linux/include/linux/page_buf.h - 1.92
        - Add pbm_dev to the pbm_bmap structure

linux/fs/pagebuf/page_buf_io.c - 1.80
        - Use kdev_t from pbbmap structure rather than from inode for device
          mapping.



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