On 10/03/2015 12:37 AM, Andrew Morton wrote:
> On Fri,  2 Oct 2015 15:35:49 +0200 Vlastimil Babka <vbabka@suse.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.