From: Linus Torvalds <torvalds@linux-foundation.org>
To: Hugh Dickins <hugh@veritas.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
a.p.zijlstra@chello.nl, salikhmetov@gmail.com,
linux-mm@kvack.org, jakob@unthought.net,
linux-kernel@vger.kernel.org, valdis.kletnieks@vt.edu,
riel@redhat.com, ksm@42.dk, staubach@redhat.com,
jesper.juhl@gmail.com, akpm@linux-foundation.org,
protasnb@gmail.com, r.e.wolff@bitwizard.nl,
hidave.darkstar@gmail.com, hch@infradead.org
Subject: Re: [PATCH -v8 3/4] Enable the MS_ASYNC functionality in sys_msync()
Date: Wed, 23 Jan 2008 14:41:53 -0800 (PST) [thread overview]
Message-ID: <alpine.LFD.1.00.0801231438530.2803@woody.linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0801232216460.5465@blonde.site>
On Wed, 23 Jan 2008, Hugh Dickins wrote:
>
> Something I dislike about it, though, is that it leaves the RAM-backed
> filesystems (ramfs, tmpfs, whatever) behaving visibly differently from
> the others.
I hear you.
But I'm not seeing many alternatives, unless we start taking write faults
on them unnecessarily. Do we care? Probably not really.
So we certainly *could* make ramfs/tmpfs claim they do dirty accounting,
but just having a no-op writeback. Without that, they'd need something
really special in the file time updates.
Personally, I don't really see anybody really caring one way or the other,
but who knows..
Linus
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next prev parent reply other threads:[~2008-01-23 22:41 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-22 23:21 [PATCH -v8 0/4] Fixing the issue with memory-mapped file times Anton Salikhmetov
2008-01-22 23:21 ` [PATCH -v8 1/4] Massive code cleanup of sys_msync() Anton Salikhmetov
2008-01-22 23:21 ` [PATCH -v8 2/4] Update ctime and mtime for memory-mapped files Anton Salikhmetov
2008-01-23 18:03 ` Linus Torvalds
2008-01-23 23:14 ` Anton Salikhmetov
2008-01-22 23:21 ` [PATCH -v8 3/4] Enable the MS_ASYNC functionality in sys_msync() Anton Salikhmetov
2008-01-23 8:47 ` Peter Zijlstra
2008-01-23 8:51 ` Peter Zijlstra
2008-01-23 9:34 ` Miklos Szeredi
2008-01-23 9:51 ` Miklos Szeredi
2008-01-23 13:09 ` Anton Salikhmetov
2008-01-23 12:53 ` Anton Salikhmetov
2008-01-23 9:41 ` Miklos Szeredi
2008-01-23 17:05 ` Linus Torvalds
2008-01-23 17:26 ` Anton Salikhmetov
2008-01-23 17:41 ` Peter Zijlstra
2008-01-23 19:35 ` Linus Torvalds
2008-01-23 19:55 ` Miklos Szeredi
2008-01-23 21:00 ` Linus Torvalds
2008-01-23 21:16 ` Miklos Szeredi
2008-01-23 21:36 ` Linus Torvalds
2008-01-23 22:29 ` Hugh Dickins
2008-01-23 22:41 ` Linus Torvalds [this message]
2008-01-24 0:03 ` Hugh Dickins
2008-01-24 0:05 ` Miklos Szeredi
2008-01-24 0:11 ` Linus Torvalds
2008-01-24 1:36 ` Nick Piggin
2008-01-24 18:56 ` Matt Mackall
2008-01-22 23:21 ` [PATCH -v8 4/4] The design document for memory-mapped file times update Anton Salikhmetov
2008-01-23 9:26 ` Miklos Szeredi
2008-01-23 10:37 ` Anton Salikhmetov
2008-01-23 10:53 ` Miklos Szeredi
2008-01-23 11:16 ` Miklos Szeredi
2008-01-23 12:25 ` Anton Salikhmetov
2008-01-23 13:55 ` Miklos Szeredi
2008-01-25 16:27 ` Randy Dunlap
2008-01-25 16:40 ` Anton Salikhmetov
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