Re: [PATCH v2 1/7] Introduce delete_from_page_cache

[Minchan Kim]

On Sun, Jan 9, 2011 at 7:16 AM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote:
> On Mon, Jan 03, 2011 at 12:44:30AM +0900, Minchan Kim wrote:
>> This function works as just wrapper remove_from_page_cache.
>> The difference is that it decreases page references in itself.
>> So caller have to make sure it has a page reference before calling.
>>
>> This patch is ready for removing remove_from_page_cache.
>>
>> Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
>> Acked-by: Hugh Dickins <hughd@xxxxxxxxxx>
>> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
>> Signed-off-by: Minchan Kim <minchan.kim@xxxxxxxxx>
>> ---
>>  include/linux/pagemap.h |    1 +
>>  mm/filemap.c            |   17 +++++++++++++++++
>>  2 files changed, 18 insertions(+), 0 deletions(-)
>>
>> diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
>> index 9c66e99..7a1cb49 100644
>> --- a/include/linux/pagemap.h
>> +++ b/include/linux/pagemap.h
>> @@ -457,6 +457,7 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
>>                               pgoff_t index, gfp_t gfp_mask);
>>  extern void remove_from_page_cache(struct page *page);
>>  extern void __remove_from_page_cache(struct page *page);
>> +extern void delete_from_page_cache(struct page *page);
>>
>>  /*
>>   * Like add_to_page_cache_locked, but used to add newly allocated pages:
>> diff --git a/mm/filemap.c b/mm/filemap.c
>> index 095c393..1ca7475 100644
>> --- a/mm/filemap.c
>> +++ b/mm/filemap.c
>> @@ -166,6 +166,23 @@ void remove_from_page_cache(struct page *page)
>>  }
>>  EXPORT_SYMBOL(remove_from_page_cache);
>>
>> +/**
>> + * delete_from_page_cache - delete page from page cache
>> + *
>
> This empty line is invalid kerneldoc, the argument descriptions must
> follow the short function description line immediately.

Thanks, Hannes.
Will fix.

>
> Otherwise,
> Reviewed-by: Johannes Weiner <hannes@xxxxxxxxxxx>
>


-- 
Kind regards,
Minchan Kim
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