OpenAFS Master Repository branch, openafs-stable-1_6_x, updated. openafs-devel-1_5_77-35-ge57578c

[Gerrit Code Review]

The following commit has been merged in the openafs-stable-1_6_x branch:
commit e57578c1d4945c63eb63897e08b983aa596a55a1
Author: Jeffrey Altman <jaltman@your-file-system.com>
Date:   Mon Sep 20 05:11:20 2010 -0700

    Rx: Do not hold call lock across memcpy in rx_ReadProc/rx_WriteProc
    
    1.4.x does not hold the call lock across memcpy operations in
    rx_ReadProc, rx_ReadProc32, rx_WriteProc, rx_WriteProc32.  The
    claim is that the call curpos, curlen, and nLeft fields which
    refer to the current packet being processed will not be touched
    by any other thread.  Therefore it is safe to drop the call lock
    to permit another thread to add packets to the call while the memcpy
    is performed in parallel.
    
    This patchset continues to hold the call lock longer than the
    original implementation but does drop it for the length of time
    it takes to copy data from the packet buffer to the application
    buffer.
    
    Change-Id: I87dacdf541ba50db80ab55e500b38edab5126dc2
    Reviewed-on: http://gerrit.openafs.org/2817
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Derrick Brashear <shadow@dementia.org>
    Tested-by: Derrick Brashear <shadow@dementia.org>
    (cherry picked from commit e197c19cedaafa0d2bb59212fb171083f2140041)
    Reviewed-on: http://gerrit.openafs.org/2822

 src/rx/rx_rdwr.c |   60 ++++++++++++++++++++++++++++++++++++++++++++---------
 1 files changed, 49 insertions(+), 11 deletions(-)

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