Re: [BUG?] possible recursive locking detected
From: Ingo Molnar
Date: Thu Jul 27 2006 - 05:50:52 EST
* Anton Altaparmakov <aia21@xxxxxxxxx> wrote:
> An example is the potential deadlock in generic buffered file write
> where we fault in a page via fault_in_pages_readable() but there is
> nothing to guarantee that page will not go away between us doing this
> and us using the page.
isnt this solved by:
commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83
Author: Vladimir V. Saveliev <vs@xxxxxxxxxxx>
Date: Tue Jun 27 02:53:57 2006 -0700
[PATCH] generic_file_buffered_write(): deadlock on vectored write
?
if not, do you have any description of the problem or a link to previous
discussion[s] outlining the problem? To me it appears this is a kernel
bug where we simply dropped the ball to fix it. I personally dont find
it acceptable to have deadlocks in the kernel, where all that is needed
to trigger it is "high i/o loads", no matter how hard it is to fix the
deadlock.
Ingo
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