linux-kernel - Re: [PATCH v3 31/35] lib: add memory allocations report in show

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Message-ID: <38e34171-e116-46ee-8e2b-de7cc96d265e@intel.com>
Date: Thu, 15 Feb 2024 15:19:33 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: Steven Rostedt <rostedt@...dmis.org>,
 Kent Overstreet <kent.overstreet@...ux.dev>
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Subject: Re: [PATCH v3 31/35] lib: add memory allocations report in show_mem()

On 2/15/24 15:07, Steven Rostedt wrote:
> Just adding the patches increases the size by 5k. But the rest shows an
> increase of 259k, and you are worried about 4k (and possibly less?)???

Doesn't the new page_ext thingy add a pointer per 'struct page', or
~0.2% of RAM, or ~32MB on a 16GB laptop?  I, too, am confused why 4k is
even remotely an issue.