iov_iter: massage iterate_iovec and iterate_kvec to logics similar to iterate_bvec

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Premature optimization is the root of all evil...  Trying
to unroll the first pass through the loop makes it harder
to follow and not just for readers - compiler ends up
generating worse code than it would on a "non-optimized"
loop.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Al Viro 2021-04-25 23:46:09 -04:00

parent f5da83545f

commit 7a1bcb5d25

1 changed files with 36 additions and 55 deletions

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lib/iov_iter.c

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