summaryrefslogtreecommitdiff
path: root/mm/filemap.c
diff options
context:
space:
mode:
authorMatthew Wilcox (Oracle) <willy@infradead.org>2021-02-24 23:02:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-25 00:38:28 +0300
commitf32b5dd721fb8861f3c1b8e7c06ac978236d0236 (patch)
tree8a01a80b3836fb2c2a841f638105e851b64f5f67 /mm/filemap.c
parentbd8a1f3655a704b9a1924fb3feffa3ecd6e5f8ae (diff)
downloadlinux-f32b5dd721fb8861f3c1b8e7c06ac978236d0236.tar.xz
mm/filemap: inline __wait_on_page_locked_async into caller
The previous patch removed wait_on_page_locked_async(), so inline __wait_on_page_locked_async into __lock_page_async(). Link: https://lkml.kernel.org/r/20210122160140.223228-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Kent Overstreet <kent.overstreet@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c53
1 files changed, 22 insertions, 31 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index f62b589cbfe4..43448d4d66f3 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1343,36 +1343,6 @@ int wait_on_page_bit_killable(struct page *page, int bit_nr)
}
EXPORT_SYMBOL(wait_on_page_bit_killable);
-static int __wait_on_page_locked_async(struct page *page,
- struct wait_page_queue *wait, bool set)
-{
- struct wait_queue_head *q = page_waitqueue(page);
- int ret = 0;
-
- wait->page = page;
- wait->bit_nr = PG_locked;
-
- spin_lock_irq(&q->lock);
- __add_wait_queue_entry_tail(q, &wait->wait);
- SetPageWaiters(page);
- if (set)
- ret = !trylock_page(page);
- else
- ret = PageLocked(page);
- /*
- * If we were successful now, we know we're still on the
- * waitqueue as we're still under the lock. This means it's
- * safe to remove and return success, we know the callback
- * isn't going to trigger.
- */
- if (!ret)
- __remove_wait_queue(q, &wait->wait);
- else
- ret = -EIOCBQUEUED;
- spin_unlock_irq(&q->lock);
- return ret;
-}
-
/**
* put_and_wait_on_page_locked - Drop a reference and wait for it to be unlocked
* @page: The page to wait for.
@@ -1548,7 +1518,28 @@ EXPORT_SYMBOL_GPL(__lock_page_killable);
int __lock_page_async(struct page *page, struct wait_page_queue *wait)
{
- return __wait_on_page_locked_async(page, wait, true);
+ struct wait_queue_head *q = page_waitqueue(page);
+ int ret = 0;
+
+ wait->page = page;
+ wait->bit_nr = PG_locked;
+
+ spin_lock_irq(&q->lock);
+ __add_wait_queue_entry_tail(q, &wait->wait);
+ SetPageWaiters(page);
+ ret = !trylock_page(page);
+ /*
+ * If we were successful now, we know we're still on the
+ * waitqueue as we're still under the lock. This means it's
+ * safe to remove and return success, we know the callback
+ * isn't going to trigger.
+ */
+ if (!ret)
+ __remove_wait_queue(q, &wait->wait);
+ else
+ ret = -EIOCBQUEUED;
+ spin_unlock_irq(&q->lock);
+ return ret;
}
/*