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Date: Thu, 29 Dec 2005 10:08:19 -0500
From: Brian Fundakowski Feldman <green@FreeBSD.org>
To: Diomidis Spinellis <dds@FreeBSD.org>
Message-ID: <20051229150819.GA27794@green.homeunix.org>
References: <200512261347.jBQDlKUB022385@repoman.freebsd.org>
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern kern_exec.c vfs_subr.c src/sys/sys
	vnode.h src/sys/ufs/ufs ufs_vnops.c src/sys/vm vm_mmap.c
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On Mon, Dec 26, 2005 at 01:47:20PM +0000, Diomidis Spinellis wrote:
> dds         2005-12-26 13:47:20 UTC
> 
>   FreeBSD src repository
> 
>   Modified files:        (Branch: RELENG_6)
>     sys/kern             kern_exec.c vfs_subr.c 
>     sys/sys              vnode.h 
>     sys/ufs/ufs          ufs_vnops.c 
>     sys/vm               vm_mmap.c 
>   Log:
>   MFC changes from 2005.10.26:
>   Move execve's access time update functionality into a
>   new vfs_mark_atime() function, and use the new function
>   for performing efficient atime updates in mmap().

Do you have any particular use cases that are improved a lot by
(seemingly) reducing gratuitous seeks for R/W file mappings?
Substantial improvement for the general case of not-noatime?

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\