From mboxrd@z Thu Jan  1 00:00:00 1970
From: Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 0/23] File descriptor hot-unplug support v2
Date: Mon, 8 Jun 2009 11:01:51 -0700 (PDT)
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References: <m1skkf761y.fsf@fess.ebiederm.org> <m1oct739xu.fsf@fess.ebiederm.org> <20090606080334.GA15204@ZenIV.linux.org.uk> <E1MDbLz-0003wm-Db@pomaz-ex.szeredi.hu> <20090608162913.GL8633@ZenIV.linux.org.uk> <E1MDhxh-0004nz-Qm@pomaz-ex.szeredi.hu>
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Cc: Miklos Szeredi <miklos@szeredi.hu>, ebiederm@xmission.com,
        linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, hugh@veritas.com,
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To: Al Viro <viro@ZenIV.linux.org.uk>
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On Mon, 8 Jun 2009, Al Viro wrote:
> 
> Welcome to reality...
> 
> * bread() is non-interruptible
> * so's copy_from_user()/copy_to_user()
> * IO we are stuck upon _might_ be interruptible, but by sending a signal
> to some other process

We can probably improve on these, though.

Like the copy_to/from_user thing. We might well be able to do that whole 
"if it's a fatal signal, return early" thing.

So in the _general_ case - no, we probably can't fix things. But we could 
likely at least improve in some common cases if we cared.

			Linus

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