Commit f5da8354 authored by Al Viro's avatar Al Viro
Browse files

iterate_and_advance(): get rid of magic in case when n is 0 



iov_iter_advance() needs to do some non-trivial work when it's given
0 as argument (skip all empty iovecs, mostly).  We used to implement
it via iterate_and_advance(); we no longer do so and for all other
users of iterate_and_advance() zero length is a no-op.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 594e450b

lib/iov_iter.c

+1 −1
Original line number Diff line number Diff line
@@ -117,7 +117,7 @@ 
#define iterate_and_advance(i, n, v, I, B, K, X) {		\

	if (unlikely(i->count < n))				\

		n = i->count;					\

	if (i->count) {						\

	if (likely(n)) {					\

		size_t skip = i->iov_offset;			\

		if (likely(iter_is_iovec(i))) {			\

			const struct iovec *iov;		\