From: Andrea Arcangeli <andrea@suse.de>
To: Andrew Morton <akpm@osdl.org>
Cc: Hugh Dickins <hugh@veritas.com>, linux-kernel@vger.kernel.org
Subject: Re: VMA_MERGING_FIXUP and patch
Date: Mon, 22 Mar 2004 21:05:05 +0100 [thread overview]
Message-ID: <20040322200505.GB22639@dualathlon.random> (raw)
In-Reply-To: <20040322115734.064f24f4.akpm@osdl.org>
On Mon, Mar 22, 2004 at 11:57:34AM -0800, Andrew Morton wrote:
> set_page_dirty() takes ->tree_lock and inode_lock. tree_lock surely is OK
> and while I cannot think of any deadlocks which could occur with taking
> inode_lock inside the rmap lock, it doesn't sound very nice.
>
> It would of course be best if we could avoid adding a new ranking
> relationship between these locks.
agreed. the inode_lock especially is more a vfs thing than a mm thing,
so it lives quite far away. (btw, in my last email I only mentioned
the mapping tree_lock because I was thinking at the swapcache, with
filebacked pagecache and the inode_lock it gets worse, probably still ok
today though)
next prev parent reply other threads:[~2004-03-22 20:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-22 17:05 Hugh Dickins
2004-03-22 17:52 ` Andrea Arcangeli
2004-03-22 19:02 ` Hugh Dickins
2004-03-22 19:58 ` Andrea Arcangeli
2004-03-23 21:44 ` nonlinear swapping w/o pte_chains [Re: VMA_MERGING_FIXUP and patch] Andrea Arcangeli
2004-03-24 2:35 ` Andrea Arcangeli
2004-03-24 4:38 ` Andrea Arcangeli
2004-03-24 10:12 ` Hugh Dickins
2004-03-24 12:18 ` Hugh Dickins
2004-03-24 14:47 ` Andrea Arcangeli
2004-03-24 14:37 ` Andrea Arcangeli
2004-03-24 18:42 ` Andrea Arcangeli
2004-03-22 19:57 ` VMA_MERGING_FIXUP and patch Andrew Morton
2004-03-22 20:05 ` Andrea Arcangeli [this message]
2004-03-22 20:33 ` Andrew Morton
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