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From: Robert Watson <rwatson@FreeBSD.org>
Date: Sun, 17 Apr 2005 16:25:36 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/nfsserver nfs.h nfs_serv.c
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rwatson     2005-04-17 16:25:36 UTC

  FreeBSD src repository

  Modified files:
    sys/nfsserver        nfs.h nfs_serv.c 
  Log:
  NFS write gathering defers execution of NFS server write requests to wait
  to see if additional write requests will arrive that can be coalesced and
  clustered with earlier ones.  When doing so, it must determine whether
  the two requests are made by credentials with the same access writes, so
  as not to coalesce improperly.  NFSW_SAMECRED() implements a test of two
  credentials using a binary compare.
  
  Replace NFSW_SAMECRED() macro with nfsrv_samecred() function, which is
  aware of the contents and layout of a struct ucred, rather than a simple
  binary compare.  While the binary compare works when ucred is simply a
  zero'd and embedded 'struct ucred' in the NFS descriptor, it will work
  less well when the ucred associated with an NFS descriptor is "real", so
  has defined and populated reference count, mutex, etc.
  
  MFC after:      1 week
  Obtained from:  TrustedBSD Project
  
  Revision  Changes    Path
  1.78      +0 -4      src/sys/nfsserver/nfs.h
  1.156     +23 -1     src/sys/nfsserver/nfs_serv.c