linux-kernel - Re: [PATCH v2 7/7] swap, put_swap_page: Share more between huge/normal code path

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Date:   Tue, 17 Jul 2018 11:36:54 -0700
From:   Dave Hansen <dave.hansen@...ux.intel.com>
To:     "Huang, Ying" <ying.huang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shaohua Li <shli@...nel.org>, Hugh Dickins <hughd@...gle.com>,
        Minchan Kim <minchan@...nel.org>,
        Rik van Riel <riel@...hat.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH v2 7/7] swap, put_swap_page: Share more between
 huge/normal code path

On 07/16/2018 05:55 PM, Huang, Ying wrote:
> 		text	   data	    bss	    dec	    hex	filename
> base:	       24215	   2028	    340	  26583	   67d7	mm/swapfile.o
> unified:       24577	   2028	    340	  26945	   6941	mm/swapfile.o

That's a bit more than I'd expect looking at the rest of the diff.  Make
me wonder if we missed an #ifdef somewhere or the compiler is getting
otherwise confused.

Might be worth a 10-minute look at the disassembly.