TAKE - streamline pagebuf I/O completion thread handling.

To:	undisclosed-recipients:;
Subject:	TAKE - streamline pagebuf I/O completion thread handling.
From:	Christoph Hellwig <hch@xxxxxxxxxxxxxxxxxxxxx>
Date:	Mon, 31 Mar 2003 18:58:25 +0200
Resent-date:	Mon, 31 Mar 2003 19:18:54 -0500
Resent-from:	hch@xxxxxxx
Resent-message-id:	<200304010018.h310Itp30990@taclab54.munich.sgi.com>
Resent-to:	linux-xfs@xxxxxxxxxxx
Sender:	linux-xfs-bounce@xxxxxxxxxxx

Replace the task queue with a simple list_head and wake the threads
directly instead of using a semaphore.  Cleanup code a bit in preparation
of examining different thread-pool models.


Date:  Mon Mar 31 09:00:46 PST 2003
Workarea:  lab343.munich.sgi.com:/home/hch/repo/slinx/2.4.x-xfs

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


Modid:  2.4.x-xfs:slinx:143110a
linux/fs/xfs/pagebuf/page_buf.c - 1.107
        - revamp I/O completion thread handling

linux/fs/xfs/pagebuf/page_buf.h - 1.63
        - replace I/O completion taskqueue with simple list_head

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