[RFC PATCH 5/7] NFS: direct-io: convert to FOLL_PIN pages

From: John Hubbard <jhubbard@nvidia.com>
To: Jens Axboe <axboe@kernel.dk>, Jan Kara <jack@suse.cz>,
	Christoph Hellwig <hch@infradead.org>,
	Dave Chinner <dchinner@redhat.com>,
	"Darrick J . Wong" <djwong@kernel.org>,
	Theodore Ts'o <tytso@mit.edu>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Chaitanya Kulkarni <kch@nvidia.com>
Cc: <linux-block@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
	<linux-xfs@vger.kernel.org>, <linux-mm@kvack.org>,
	LKML <linux-kernel@vger.kernel.org>,
	John Hubbard <jhubbard@nvidia.com>
Subject: [RFC PATCH 5/7] NFS: direct-io: convert to FOLL_PIN pages
Date: Fri, 25 Feb 2022 00:50:23 -0800	[thread overview]
Message-ID: <20220225085025.3052894-6-jhubbard@nvidia.com> (raw)
In-Reply-To: <20220225085025.3052894-1-jhubbard@nvidia.com>

Now that Direct IO's core allocators invoke pin_user_pages_fast(), those
pages must free released via unpin_user_page(), instead of put_page().

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 fs/nfs/direct.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index eabfdab543c8..2e0d399c5a5a 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -181,7 +181,7 @@ static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
 {
 	unsigned int i;
 	for (i = 0; i < npages; i++)
-		put_page(pages[i]);
+		dio_w_unpin_user_page(pages[i]);
 }
 
 void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
-- 
2.35.1

