Commit cd0bd57a authored by Jens Axboe's avatar Jens Axboe
Browse files

iov_iter: set nr_segs = 1 for ITER_UBUF 



To avoid needing to check if a given user backed iov_iter is of type
ITER_IOVEC or ITER_UBUF, set the number of segments for the ITER_UBUF
case to 1 as we're carrying a single segment.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 6eb203e1

include/linux/uio.h

+2 −1
Original line number Diff line number Diff line
@@ -355,7 +355,8 @@ static inline void iov_iter_ubuf(struct iov_iter *i, unsigned int direction, 
		.user_backed = true,

		.data_source = direction,

		.ubuf = buf,

		.count = count

		.count = count,

		.nr_segs = 1

	};

}

/* Flags for iov_iter_get/extract_pages*() */