From: Christoph Hellwig <hch@infradead.org>
To: "zhaoyang.huang" <zhaoyang.huang@unisoc.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Vlastimil Babka <vbabka@suse.cz>,
Zhaoyang Huang <huangzhaoyang@gmail.com>,
linux-mm@kvack.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, ke.wang@unisoc.com,
steve.kang@unisoc.com
Subject: Re: [RFC PATCH] mm: skip GFP_IO if swap is zram only
Date: Mon, 10 Oct 2022 06:09:43 -0700 [thread overview]
Message-ID: <Y0QZlxhPIRMTcqgE@infradead.org> (raw)
In-Reply-To: <1665399622-20236-1-git-send-email-zhaoyang.huang@unisoc.com>
On Mon, Oct 10, 2022 at 07:00:22PM +0800, zhaoyang.huang wrote:
> From: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
>
> __GFP_IO is believed to prevent the allocation being suspended due to accessing
> physical block devices when reclaiming dirty pages. Zram is not considered as
> such kind of device from kernel perspective of view. Do swap things if the system
> is zram only.
No, zram is not in any way special, and for sure not important enough
to add special case hacks to the VM code.
prev parent reply other threads:[~2022-10-10 13:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 11:00 zhaoyang.huang
2022-10-10 13:09 ` Christoph Hellwig [this message]
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