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Date: Mon, 19 Jul 2021 16:47:04 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk> Subject: [PATCH 4.19 013/421] [xarray] iov_iter_fault_in_readable() should do nothing in xarray case From: Al Viro <viro@...iv.linux.org.uk> commit 0e8f0d67401589a141950856902c7d0ec8d9c985 upstream. ... and actually should just check it's given an iovec-backed iterator in the first place. Cc: stable@...r.kernel.org Signed-off-by: Al Viro <viro@...iv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- lib/iov_iter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -417,7 +417,7 @@ int iov_iter_fault_in_readable(struct io int err; struct iovec v; - if (!(i->type & (ITER_BVEC|ITER_KVEC))) { + if (iter_is_iovec(i)) { iterate_iovec(i, bytes, v, iov, skip, ({ err = fault_in_pages_readable(v.iov_base, v.iov_len); if (unlikely(err))
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