iov_iter: add iter_iovec() helper

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This returns a pointer to the current iovec entry in the iterator. Only
useful with ITER_IOVEC right now, but it prepares us to treat ITER_UBUF
and ITER_IOVEC identically for the first segment.

Rename struct iov_iter->iov to iov_iter->__iov to find any potentially
troublesome spots, and also to prevent anyone from adding new code that
accesses iter->iov directly.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Jens Axboe 2023-03-29 08:52:15 -06:00

parent 0a2481cde2

commit de4f5fed3f

12 changed files with 73 additions and 53 deletions

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lib/iov_iter.c

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