Re: [PATCH] mm/filemap: Make folio_put_wait_locked static

[Ke Sun <sunke@kylinos.cn>]

On 2022/9/15 15:30, Matthew Wilcox wrote:
> On Thu, Sep 15, 2022 at 08:45:33AM +0800, Ke Sun wrote:
>> Ping.
> Don't be rude.  I'm at a conference this week and on holiday next week.
> This is hardly an urgent patch.
So sorry to bother you. Some duplicate emails were sent due to issues 
with mailbox app settings.
>> On 2022/9/14 09:58, Ke Sun wrote:
>>> It's only used in mm/filemap.c, since commit <ffa65753c431>
>>> ("mm/migrate.c: rework migration_entry_wait() to not take a pageref").
>>>
>>> Make it static.
>>>
>>> Cc: Andrew Morton <akpm@linux-foundation.org>
>>> Cc: linux-mm@kvack.org
>>> Cc: linux-kernel@vger.kernel.org
>>> Reported-by: k2ci <kernel-bot@kylinos.cn>
>>> Signed-off-by: Ke Sun <sunke@kylinos.cn>
>>> ---
>>> include/linux/pagemap.h | 1 -
>>> mm/filemap.c | 2 +-
>>> 2 files changed, 1 insertion(+), 2 deletions(-)
>>>
>>> diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
>>> index 0178b2040ea3..82880993dd1a 100644
>>> --- a/include/linux/pagemap.h
>>> +++ b/include/linux/pagemap.h
>>> @@ -1042,7 +1042,6 @@ static inline int
>>> wait_on_page_locked_killable(struct page *page)
>>> return folio_wait_locked_killable(page_folio(page));
>>> }
>>> -int folio_put_wait_locked(struct folio *folio, int state);
>>> void wait_on_page_writeback(struct page *page);
>>> void folio_wait_writeback(struct folio *folio);
>>> int folio_wait_writeback_killable(struct folio *folio);
>>> diff --git a/mm/filemap.c b/mm/filemap.c
>>> index 15800334147b..ade9b7bfe7fc 100644
>>> --- a/mm/filemap.c
>>> +++ b/mm/filemap.c
>>> @@ -1467,7 +1467,7 @@ EXPORT_SYMBOL(folio_wait_bit_killable);
>>> *
>>> * Return: 0 if the folio was unlocked or -EINTR if interrupted by a
>>> signal.
>>> */
>>> -int folio_put_wait_locked(struct folio *folio, int state)
>>> +static int folio_put_wait_locked(struct folio *folio, int state)
>>> {
>>> return folio_wait_bit_common(folio, PG_locked, state, DROP);
>>> }