diff options
| author |   NeilBrown <neilb@suse.de> | 2014-09-24 11:28:32 +1000 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@primarydata.com> | 2014-09-25 08:25:09 -0400 |
| commit | a4796e37c12e177572b80864cbab9c907ea250b0 (patch) | |
| tree | 0b268cf842c4b2531f408ff35559f0135bf32df6 /mm/filemap.c | |
| parent | SCHED: add some "wait..on_bit...timeout()" interfaces. (diff) | |
| download | linux-dev-a4796e37c12e177572b80864cbab9c907ea250b0.tar.xz linux-dev-a4796e37c12e177572b80864cbab9c907ea250b0.zip | |
MM: export page_wakeup functions
This will allow NFS to wait for PG_private to be cleared and,
particularly, to send a wake-up when it is.
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index cbe5a9013f70..b9b1413080be 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -670,17 +670,13 @@ EXPORT_SYMBOL(__page_cache_alloc); * at a cost of "thundering herd" phenomena during rare hash * collisions. */ -static wait_queue_head_t *page_waitqueue(struct page *page) +wait_queue_head_t *page_waitqueue(struct page *page) { const struct zone *zone = page_zone(page); return &zone->wait_table[hash_ptr(page, zone->wait_table_bits)]; } - -static inline void wake_up_page(struct page *page, int bit) -{ - __wake_up_bit(page_waitqueue(page), &page->flags, bit); -} +EXPORT_SYMBOL(page_waitqueue); void wait_on_page_bit(struct page *page, int bit_nr) { |