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| H A D | iov_iter.c | f5da8354 Wed Apr 28 19:59:08 CDT 2021 Al Viro <viro@zeniv.linux.org.uk> 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: Al Viro <viro@zeniv.linux.org.uk>
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