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Re: [patch 0/9] buffered write deadlock fix

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From: Andrew Morton <akpm@...>
To: Nick Piggin <npiggin@...>, Hugh Dickins <hugh@...>, Linux Kernel <linux-kernel@...>, Linux Filesystems <linux-fsdevel@...>, Linux Memory Management <linux-mm@...>
Subject: Re: [patch 0/9] buffered write deadlock fix
Date: Tuesday, January 30, 2007 - 7:21 pm

On Tue, 30 Jan 2007 12:55:58 -0800
Andrew Morton <akpm@osdl.org> wrote:


And he was right, of course.  Task A holds file a's i_mutex and takes a
fault against file b's page.  Task B holds file b's i_mutex and takes a
fault against file a's page.  Drat.

I wonder if there's a sane way of preventing that.
-
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Messages in current thread:
[patch 0/9] buffered write deadlock fix, Nick Piggin, (Mon Jan 29, 6:31 am)
Re: [patch 0/9] buffered write deadlock fix, Andrew Morton, (Fri Feb 2, 7:52 pm)
Re: [patch 0/9] buffered write deadlock fix, Fengguang Wu, (Sat Feb 3, 11:31 am)
Re: [patch 0/9] buffered write deadlock fix, Suparna Bhattacharya, (Sat Feb 3, 2:43 am)
Re: [patch 0/9] buffered write deadlock fix, Nick Piggin, (Fri Feb 2, 9:22 pm)
Re: [patch 0/9] buffered write deadlock fix, Andrew Morton, (Tue Jan 30, 4:55 pm)
Re: [patch 0/9] buffered write deadlock fix, Nick Piggin, (Tue Jan 30, 8:32 pm)
Re: [patch 0/9] buffered write deadlock fix, Andrew Morton, (Tue Jan 30, 7:21 pm)
Re: [patch 0/9] buffered write deadlock fix, Nick Piggin, (Tue Jan 30, 9:31 pm)
[patch 8/9] mm: generic_file_buffered_write iovec cleanup, Nick Piggin, (Mon Jan 29, 6:32 am)
[patch 7/9] mm: cleanup pagecache insertion operations, Nick Piggin, (Mon Jan 29, 6:32 am)
[patch 9/9] mm: fix pagecache write deadlocks, Nick Piggin, (Mon Jan 29, 6:33 am)
Re: [patch 9/9] mm: fix pagecache write deadlocks, Andrew Morton, (Fri Feb 2, 7:53 pm)
Re: [patch 9/9] mm: fix pagecache write deadlocks, Nick Piggin, (Fri Feb 2, 9:38 pm)
Re: [patch 9/9] mm: fix pagecache write deadlocks, Nick Piggin, (Mon Jan 29, 7:11 am)
[patch 6/9] mm: be sure to trim blocks, Nick Piggin, (Mon Jan 29, 6:32 am)
[patch 5/9] mm: debug write deadlocks, Nick Piggin, (Mon Jan 29, 6:32 am)
[patch 3/9] mm: revert "generic_file_buffered_write(): deadl..., Nick Piggin, (Mon Jan 29, 6:32 am)
[patch 4/9] mm: generic_file_buffered_write cleanup, Nick Piggin, (Mon Jan 29, 6:32 am)
[patch 1/9] fs: libfs buffered write leak fix, Nick Piggin, (Mon Jan 29, 6:31 am)
Re: [patch 1/9] fs: libfs buffered write leak fix, Andrew Morton, (Fri Feb 2, 7:52 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Nick Piggin, (Fri Feb 2, 9:33 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Jörn, (Sat Feb 3, 1:49 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Nick Piggin, (Sat Feb 3, 11:55 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Andrew Morton, (Fri Feb 2, 9:58 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Nick Piggin, (Fri Feb 2, 10:09 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Andrew Morton, (Fri Feb 2, 10:19 pm)
Re: [patch 1/9] fs: libfs buffered write leak fix, Nick Piggin, (Fri Feb 2, 10:28 pm)
[patch 2/9] mm: revert "generic_file_buffered_write(): handl..., Nick Piggin, (Mon Jan 29, 6:31 am)