Re: [PATCH v4] page_alloc: consider highatomic reserve in watermark fast

On Wed, Sep 14, 2022 at 08:46:15AM +0800, yong w wrote:

Greg KH gregkh@linuxfoundation.org 于2022年9月13日周二 21:54写道：

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On Tue, Sep 13, 2022 at 09:09:47PM +0800, yong wrote:

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Hello, This patch is required to be patched in linux-5.4.y and linux-4.19.y.

What is "this patch"? There is no context here :(

Sorry, I forgot to quote the original patch. the patch is as follows

f27ce0e page_alloc: consider highatomic reserve in watermark fast

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In addition to that, the following two patches are somewhat related:

  3334a45 mm/page_alloc: use ac->high_zoneidx for classzone_idx
  9282012 page_alloc: fix invalid watermark check on a negative value

In what way? What should be done here by us?

I think these two patches should also be merged.

The classzone_idx  parameter is used in the zone_watermark_fast

functionzone, and 3334a45 use ac->high_zoneidx for classzone_idx. "9282012 page_alloc: fix invalid watermark check on a negative value" fix f27ce0e introduced issues

Ok, I need an ack by all the developers involved in those commits, as well as the subsystem maintainer so that I know it's ok to take them.

Can you provide a series of backported and tested patches so that they are easy to review?

thanks,

greg k-h