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Date: Fri, 1 Mar 1996 20:40:58 -0800 (PST)
From: John Dyson <dyson>
Message-Id: <199603020440.UAA08302@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-sys
Subject: cvs commit:  src/sys/kern vfs_bio.c vfs_cluster.c
Sender: owner-cvs-sys@FreeBSD.ORG
Precedence: bulk

dyson       96/03/01 20:40:58

  Modified:    sys/kern  vfs_bio.c vfs_cluster.c
  Log:
  1)	Fix a bug that a buffer is removed from a queue, but the
  	queue type is not set to QUEUE_NONE.  This appears to have
  	caused a hang bug that has been lurking.
  2)	Fix bugs that brelse'ing locked buffers do not "free" them, but the
  	code assumes so.  This can cause hangs when LFS is used.
  3)	Use malloced memory for directories when applicable.  The amount
  	of malloced memory is seriously limited, but should decrease the
  	amount of memory used by an average directory to 1/4 - 1/2 previous.
  	This capability is fully tunable.  (Note that there is no config
  	parameter, and might never be.)
  4)	Bias slightly the buffer cache usage towards non-VMIO buffers.  Since
  	the data in VMIO buffers is not lost when the buffer is reclaimed, this
  	will help performance.  This is adjustable also.
  
  Revision  Changes    Path
  1.86      +121 -25   src/sys/kern/vfs_bio.c
  1.35      +3 -3      src/sys/kern/vfs_cluster.c