From owner-cvs-all  Sun Mar  7 13:25:59 1999
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From: Alan Cox <alc@FreeBSD.org>
Date: Sun, 7 Mar 1999 13:25:43 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/vm vm_map.c
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alc         1999/03/07 13:25:43 PST

  Modified files:
    sys/vm               vm_map.c 
  Log:
  Change vm_map_growstack to acquire and hold a read lock (instead of a write
  lock) until it actually needs to modify the vm_map.
  
  Note: it is legal to modify vm_map::hint without holding a write lock.
  
  Submitted by:	"Richard Seaman, Jr." <dick@tar.com> with minor changes
  		by myself.
  
  Revision  Changes    Path
  1.154     +17 -11    src/sys/vm/vm_map.c


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