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authorTakashi Iwai <tiwai@suse.de>2014-10-27 12:52:29 +0100
committerTakashi Iwai <tiwai@suse.de>2014-10-27 12:52:29 +0100
commitd5432503bfb49f3425bad0b850714ffd8b533cfc (patch)
tree97926e7eea0b6d8b0e8bf98748dd9c0ef4c718ad /mm/filemap.c
parentALSA: hda/realtek - New SSID for Headset quirk (diff)
parentMerge remote-tracking branches 'asoc/fix/adau1761', 'asoc/fix/fsl', 'asoc/fix/intel', 'asoc/fix/s6000' and 'asoc/fix/sgtl5000' into asoc-linus (diff)
downloadwireguard-linux-d5432503bfb49f3425bad0b850714ffd8b533cfc.tar.xz
wireguard-linux-d5432503bfb49f3425bad0b850714ffd8b533cfc.zip
Merge tag 'asoc-v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.18 A few small driver fixes for v3.18 plus the removal of the s6000 support since the relevant chip is no longer supported in mainline.
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 90effcdf948d..14b4642279f1 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)
{
@@ -703,6 +699,19 @@ int wait_on_page_bit_killable(struct page *page, int bit_nr)
bit_wait_io, TASK_KILLABLE);
}
+int wait_on_page_bit_killable_timeout(struct page *page,
+ int bit_nr, unsigned long timeout)
+{
+ DEFINE_WAIT_BIT(wait, &page->flags, bit_nr);
+
+ wait.key.timeout = jiffies + timeout;
+ if (!test_bit(bit_nr, &page->flags))
+ return 0;
+ return __wait_on_bit(page_waitqueue(page), &wait,
+ bit_wait_io_timeout, TASK_KILLABLE);
+}
+EXPORT_SYMBOL_GPL(wait_on_page_bit_killable_timeout);
+
/**
* add_page_wait_queue - Add an arbitrary waiter to a page's wait queue
* @page: Page defining the wait queue of interest
@@ -727,7 +736,7 @@ EXPORT_SYMBOL_GPL(add_page_wait_queue);
*
* Unlocks the page and wakes up sleepers in ___wait_on_page_locked().
* Also wakes sleepers in wait_on_page_writeback() because the wakeup
- * mechananism between PageLocked pages and PageWriteback pages is shared.
+ * mechanism between PageLocked pages and PageWriteback pages is shared.
* But that's OK - sleepers in wait_on_page_writeback() just go back to sleep.
*
* The mb is necessary to enforce ordering between the clear_bit and the read
@@ -1744,7 +1753,7 @@ EXPORT_SYMBOL(generic_file_read_iter);
static int page_cache_read(struct file *file, pgoff_t offset)
{
struct address_space *mapping = file->f_mapping;
- struct page *page;
+ struct page *page;
int ret;
do {
@@ -1761,7 +1770,7 @@ static int page_cache_read(struct file *file, pgoff_t offset)
page_cache_release(page);
} while (ret == AOP_TRUNCATED_PAGE);
-
+
return ret;
}