[PATCH v3 14/18] hostfs: Tell the VFS that readpage was synchronous

["Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>]

The hostfs readpage implementation was already synchronous, so use
AOP_UPDATED_PAGE to avoid cycling the page lock.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Acked-by: Richard Weinberger <richard@xxxxxx>
---
 fs/hostfs/hostfs_kern.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index c070c0d8e3e9..c49221c09c4b 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -455,6 +455,8 @@ static int hostfs_readpage(struct file *file, struct page *page)
  out:
 	flush_dcache_page(page);
 	kunmap(page);
+	if (!ret)
+		return AOP_UPDATED_PAGE;
 	unlock_page(page);
 	return ret;
 }
-- 
2.28.0