linux-kernel - Re: [PATCH v4 2/4] mm, proc: account for shmem swap in /proc/pid/smaps

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Message-ID: <56137353.2010600@suse.cz>
Date:	Tue, 6 Oct 2015 09:08:03 +0200
From:	Vlastimil Babka <vbabka@...e.cz>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, Jerome Marchand <jmarchan@...hat.com>,
	Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, Michal Hocko <mhocko@...e.cz>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	linux-s390@...r.kernel.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Linux API <linux-api@...r.kernel.org>,
	Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Subject: Re: [PATCH v4 2/4] mm, proc: account for shmem swap in
 /proc/pid/smaps

On 10/03/2015 12:37 AM, Andrew Morton wrote:
> On Fri,  2 Oct 2015 15:35:49 +0200 Vlastimil Babka <vbabka@...e.cz> wrote:
>
>>
>> --- a/include/linux/shmem_fs.h
>> +++ b/include/linux/shmem_fs.h
>> @@ -60,6 +60,12 @@ extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
>>   extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
>>   extern int shmem_unuse(swp_entry_t entry, struct page *page);
>>
>> +#ifdef CONFIG_SWAP
>> +extern unsigned long shmem_swap_usage(struct inode *inode);
>> +extern unsigned long shmem_partial_swap_usage(struct address_space *mapping,
>> +						pgoff_t start, pgoff_t end);
>> +#endif
>
> CONFIG_SWAP is wrong, isn't it?  It should be CONFIG_SHMEM if anything.

Yeah, I overlooked this while removing the other ifdefs. Thanks.

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