linux-kernel - Re: [PATCH 17/21] Percpu tag allocator

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Message-ID: <20130515161045.GA27213@redhat.com>
Date:	Wed, 15 May 2013 18:10:45 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Kent Overstreet <koverstreet@...gle.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-aio@...ck.org, akpm@...ux-foundation.org,
	Tejun Heo <tj@...nel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH 17/21] Percpu tag allocator

Damn, sorry for extra noise, I forgot to ask this twice...

And what about cpu_down()? Perhaps tag_pool should do move_tags()
on CPU_DEAD?

Or at least it should be documented that the dead cpu can lose up
to 2 * watermark entries.

Oleg.

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