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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 a4796e37c1 ("MM: export page_wakeup functions").

Link: http://lkml.kernel.org/r/20170103182234.30141-3-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nicholas Piggin 2017-02-22 15:44:41 -08:00 committed by Linus Torvalds
parent d94e0c05eb
commit 74d81bfae8
2 changed files with 10 additions and 12 deletions
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12
include/linux/pagemap.h
View File

@ -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.

10
mm/filemap.c
View File

@ -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)