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Message-Id: <d80b0e1347c7df986754cedbf35abbc441affc59.1426626029.git.osandov@osandov.com> Date: Tue, 17 Mar 2015 14:04:02 -0700 From: Omar Sandoval <osandov@...ndov.com> To: Al Viro <viro@...IV.linux.org.uk>, David Sterba <dsterba@...e.cz> Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, Omar Sandoval <osandov@...ndov.com> Subject: [RFC PATCH v3 1/5] new helper: iov_iter_rw() Get either READ or WRITE out of iter->type. Signed-off-by: Omar Sandoval <osandov@...ndov.com> --- Ok, let's do that, then. include/linux/uio.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/uio.h b/include/linux/uio.h index 7188029..71889c9 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -111,6 +111,14 @@ static inline bool iter_is_iovec(struct iov_iter *i) } /* + * Get one of READ or WRITE out of iter->type without any other flags OR'd in + * with it. + * + * The ?: is just for type safety. + */ +#define iov_iter_rw(i) ((0 ? (struct iov_iter *)0 : (i))->type & RW_MASK) + +/* * Cap the iov_iter by given limit; note that the second argument is * *not* the new size - it's upper limit for such. Passing it a value * greater than the amount of data in iov_iter is fine - it'll just do -- 2.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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