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authorNeilBrown <neilb@suse.de>2014-09-24 11:28:32 +1000
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-09-25 08:25:09 -0400
commita4796e37c12e177572b80864cbab9c907ea250b0 (patch)
tree0b268cf842c4b2531f408ff35559f0135bf32df6 /mm/filemap.c
parentcbbce82209490df8b68da9aec0d642451fe0a668 (diff)
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.c8
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)
{