From 74d81bfae8e3f52e956367f6ed764db269b87091 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Wed, 22 Feb 2017 15:44:41 -0800 Subject: [PATCH] mm: un-export wake_up_page functions These are no longer used outside mm/filemap.c, so un-export them and make them static where possible. These were exported specifically for NFS use in commit a4796e37c12e ("MM: export page_wakeup functions"). Link: http://lkml.kernel.org/r/20170103182234.30141-3-npiggin@gmail.com Signed-off-by: Nicholas Piggin Cc: Trond Myklebust Cc: Anna Schumaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 12 ++---------- mm/filemap.c | 10 ++++++++-- 2 files changed, 10 insertions(+), 12 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 324c8dbad1e1..b572f5530392 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -482,19 +482,11 @@ static inline int lock_page_or_retry(struct page *page, struct mm_struct *mm, } /* - * This is exported only for wait_on_page_locked/wait_on_page_writeback, - * and for filesystems which need to wait on PG_private. + * This is exported only for wait_on_page_locked/wait_on_page_writeback, etc., + * and should not be used directly. */ extern void wait_on_page_bit(struct page *page, int bit_nr); extern int wait_on_page_bit_killable(struct page *page, int bit_nr); -extern void wake_up_page_bit(struct page *page, int bit_nr); - -static inline void wake_up_page(struct page *page, int bit) -{ - if (!PageWaiters(page)) - return; - wake_up_page_bit(page, bit); -} /* * Wait for a page to be unlocked. diff --git a/mm/filemap.c b/mm/filemap.c index 3f9afded581b..a3dbe9eff213 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -788,7 +788,7 @@ static int wake_page_function(wait_queue_t *wait, unsigned mode, int sync, void return autoremove_wake_function(wait, mode, sync, key); } -void wake_up_page_bit(struct page *page, int bit_nr) +static void wake_up_page_bit(struct page *page, int bit_nr) { wait_queue_head_t *q = page_waitqueue(page); struct wait_page_key key; @@ -821,7 +821,13 @@ void wake_up_page_bit(struct page *page, int bit_nr) } spin_unlock_irqrestore(&q->lock, flags); } -EXPORT_SYMBOL(wake_up_page_bit); + +static void wake_up_page(struct page *page, int bit) +{ + if (!PageWaiters(page)) + return; + wake_up_page_bit(page, bit); +} static inline int wait_on_page_bit_common(wait_queue_head_t *q, struct page *page, int bit_nr, int state, bool lock)