linux-kernel - Re: [PATCH 1/2] mm/kmemleak: Compact kmemleak

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Date: Tue, 26 Mar 2024 17:33:12 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: Waiman Long <longman@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm/kmemleak: Compact kmemleak_object further

On Thu, Mar 07, 2024 at 02:05:47PM -0500, Waiman Long wrote:
> With commit 56a61617dd22 ("mm: use stack_depot for recording kmemleak's
> backtrace"), the size of kmemleak_object has been reduced by 128 bytes
> for 64-bit arches. The replacement "depot_stack_handle_t trace_handle"
> is actually just 4 bytes long leaving a hole of 4 bytes. By moving up
> trace_handle to another existing 4-byte hold, we can save 8 more bytes
> from kmemleak_object reducing its overall size from 248 to 240 bytes.
> 
> Signed-off-by: Waiman Long <longman@...hat.com>

Acked-by: Catalin Marinas <catalin.marinas@....com>