From: Linus Torvalds <torvalds@linux-foundation.org>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: jens.axboe@oracle.com, akpm@linux-foundation.org,
nickpiggin@yahoo.com.au, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch v3] splice: fix race with page invalidation
Date: Wed, 30 Jul 2008 10:00:28 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.1.10.0807300958390.3334@nehalem.linux-foundation.org> (raw)
In-Reply-To: <E1KO8DV-0004E4-6H@pomaz-ex.szeredi.hu>
On Wed, 30 Jul 2008, Miklos Szeredi wrote:
>
> There are no real disadvantages: splice() from a file was originally meant to
> be asynchronous, but in reality it only did that for non-readahead pages,
> which happen rarely.
I still don't like this. I still don't see the point, and I still think
there is something fundamentally wrong elsewhere.
I also object to just dismissing the async nature as unimportant. Fix it
instead. Make it use generic_file_readahead() or something. This is fixing
things in all the wrong places, imnsho.
Linus
next prev parent reply other threads:[~2008-07-30 17:03 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-30 9:43 [patch v3] splice: fix race with page invalidation Miklos Szeredi
2008-07-30 17:00 ` Linus Torvalds [this message]
2008-07-30 17:29 ` Miklos Szeredi
2008-07-30 17:54 ` Jens Axboe
2008-07-30 18:32 ` Miklos Szeredi
2008-07-30 18:43 ` Miklos Szeredi
2008-07-30 19:45 ` Jens Axboe
2008-07-30 20:05 ` Miklos Szeredi
2008-07-30 20:13 ` Linus Torvalds
2008-07-30 20:45 ` Miklos Szeredi
2008-07-30 20:51 ` Linus Torvalds
2008-07-30 21:16 ` Miklos Szeredi
2008-07-30 21:22 ` Linus Torvalds
2008-07-30 21:46 ` Miklos Szeredi
2008-07-30 21:56 ` Linus Torvalds
2008-07-31 0:11 ` Jamie Lokier
2008-07-31 0:42 ` Jamie Lokier
2008-07-31 0:51 ` Linus Torvalds
2008-07-31 0:54 ` Linus Torvalds
2008-07-31 6:12 ` Jamie Lokier
2008-07-31 10:26 ` Evgeniy Polyakov
2008-07-31 12:33 ` Jamie Lokier
2008-07-31 12:49 ` Nick Piggin
2008-07-31 13:29 ` Evgeniy Polyakov
2008-07-31 16:56 ` Linus Torvalds
2008-07-31 16:34 ` Linus Torvalds
2008-07-31 17:21 ` Jamie Lokier
2008-07-31 18:54 ` Linus Torvalds
2008-07-31 7:30 ` Miklos Szeredi
2008-07-31 2:16 ` Nick Piggin
2008-07-31 12:59 ` Nick Piggin
2008-07-31 17:00 ` Linus Torvalds
2008-07-31 18:13 ` Miklos Szeredi
2008-08-01 1:22 ` Nick Piggin
2008-08-01 18:28 ` Miklos Szeredi
2008-08-01 18:32 ` Linus Torvalds
2008-08-02 4:26 ` Nick Piggin
2008-08-04 15:29 ` Jamie Lokier
2008-08-05 2:57 ` Nick Piggin
2008-08-11 3:22 ` Michael Kerrisk
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