linux-kernel - Re: [PATCH v2 2/5] dax: increase granularity of dax_clear

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Message-ID: <x49611qaeqk.fsf@segfault.boston.devel.redhat.com>
Date:	Wed, 28 Oct 2015 17:02:27 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	"Williams\, Dan J" <dan.j.williams@...el.com>
Cc:	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-nvdimm\@ml01.01.org" <linux-nvdimm@...1.01.org>,
	"hch\@lst.de" <hch@....de>,
	"akpm\@linux-foundation.org" <akpm@...ux-foundation.org>,
	"axboe\@fb.com" <axboe@...com>, "jack\@suse.com" <jack@...e.com>,
	"david\@fromorbit.com" <david@...morbit.com>,
	"jack\@suse.cz" <jack@...e.cz>
Subject: Re: [PATCH v2 2/5] dax: increase granularity of dax_clear_blocks() operations

"Williams, Dan J" <dan.j.williams@...el.com> writes:

> The problem is that intervening call to cond_resched().  I later want to
> inject an rcu_read_lock()/unlock() pair to allow flushing active
> dax_map_atomic() usages at driver teardown time [1].  But, I think the
> patch stands alone as a cleanup outside of that admittedly hidden
> motivation.

I'm not going to split hairs.

Reviewed-by: Jeff Moyer <jmoyer@...hat.com>
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