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Subject[RFC PATCH v2 1/5] new helper: iov_iter_rw()
Date
Get either READ or WRITE out of iter->type.

Signed-off-by: Omar Sandoval <osandov@osandov.com>
---
Thanks, Al, this is much better. Anything else you'd like me to address
for this series?

include/linux/uio.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 7188029..3d80a36 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -111,6 +111,12 @@ 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.
+ */
+#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


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