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From:   "Matthew Wilcox (Oracle)" <willy@infradead.org>
To:     linux-fsdevel@vger.kernel.org
Cc:     "Matthew Wilcox (Oracle)" <willy@infradead.org>,
        linux-mm@kvack.org, v9fs-developer@lists.sourceforge.net,
        linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org,
        ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org,
        ecryptfs@vger.kernel.org, linux-um@lists.infradead.org,
        linux-mtd@lists.infradead.org, Richard Weinberger <richard@nod.at>
Subject: [PATCH 13/13] vboxsf: Tell the VFS that readpage was synchronous
Date:   Thu, 17 Sep 2020 16:10:50 +0100
Message-Id: <20200917151050.5363-14-willy@infradead.org>
In-Reply-To: <20200917151050.5363-1-willy@infradead.org>
References: <20200917151050.5363-1-willy@infradead.org>
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The vboxsf inline data readpage implementation was already synchronous,
so use AOP_UPDATED_PAGE to avoid cycling the page lock.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 fs/vboxsf/file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/vboxsf/file.c b/fs/vboxsf/file.c
index c4ab5996d97a..c2a144e5cb5a 100644
--- a/fs/vboxsf/file.c
+++ b/fs/vboxsf/file.c
@@ -228,6 +228,8 @@ static int vboxsf_readpage(struct file *file, struct page *page)
 	}
 
 	kunmap(page);
+	if (!err)
+		return AOP_UPDATED_PAGE;
 	unlock_page(page);
 	return err;
 }
-- 
2.28.0