linux-kernel - Re: [RFC PATCH] shrink_dcache

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Message-ID: <CA+55aFy-XiMR6XCudvjbPV8Q0cyDxy+iB_BnDxYOJTnskCkw9A@mail.gmail.com>
Date:	Mon, 9 Jan 2012 08:43:32 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, mgorman@...e.de, gregkh@...e.de,
	hch@...radead.org, akpm@...ux-foundation.org
Subject: Re: [RFC PATCH] shrink_dcache_parent() deadlock

On Mon, Jan 9, 2012 at 2:58 AM, Miklos Szeredi <miklos@...redi.hu> wrote:
>
> This patch adds a new dentry flag that is set when the dentry is removed
> from the lru and put on the list being processed by
> shrink_dentry_list().  The flag is cleared in dentry_lru_del() which is
> called if the dentry gets a new reference just before it's pruned.
>
> Thoughts?

Looks reasonable. Were you actually able to reproduce the hang, or how
did you notice?

Al, comments?

                           Linus
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