From: David Howells dhowells@redhat.com
[ Upstream commit 330de47d14af0c3995db81cc03cf5ca683d94d81 ]
Fix netfs_clear_unread() to pass READ to iov_iter_xarray() instead of WRITE (the flag is about the operation accessing the buffer, not what sort of access it is doing to the buffer).
Fixes: 3d3c95046742 ("netfs: Provide readahead and readpage netfs helpers") Signed-off-by: David Howells dhowells@redhat.com Reviewed-by: Jeff Layton jlayton@kernel.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: ceph-devel@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: linux-nfs@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Link: https://lore.kernel.org/r/162729351325.813557.9242842205308443901.stgit@wart... Link: https://lore.kernel.org/r/162886603464.3940407.3790841170414793899.stgit@war... Link: https://lore.kernel.org/r/163239074602.1243337.14154704004485867017.stgit@wa... Signed-off-by: Sasha Levin sashal@kernel.org --- fs/netfs/read_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c index 0b6cd3b8734c..994ec22d4040 100644 --- a/fs/netfs/read_helper.c +++ b/fs/netfs/read_helper.c @@ -150,7 +150,7 @@ static void netfs_clear_unread(struct netfs_read_subrequest *subreq) { struct iov_iter iter;
- iov_iter_xarray(&iter, WRITE, &subreq->rreq->mapping->i_pages, + iov_iter_xarray(&iter, READ, &subreq->rreq->mapping->i_pages, subreq->start + subreq->transferred, subreq->len - subreq->transferred); iov_iter_zero(iov_iter_count(&iter), &iter);