Re: [PATCH 01/10] mm/ksm: reduce the flush action for ksm merging page

[David Hildenbrand]

On 04.06.24 06:24, alexs@xxxxxxxxxx wrote:
> From: "Alex Shi (tencent)" <alexs@xxxxxxxxxx>
>
> We can put off the flush action util a merging is realy coming. That
> could reduce some unmerge page flushing.
> BTW, flushing only do at arm, mips and few other archs.

I'm no expert on that flushing, but I thought we would have to do the 
flushing before accessing page content -- before calculating the 
checksum etc.

Now you would only do it before the pages_identical() check, but not 
when calculating the checksum.

--
Cheers,

David / dhildenb