On Mon, 30 Apr 2018 11:50:04 +1000
NeilBrown <ne...@suse.com> wrote:
> This patch simplifies the interface for first/next iteration and
> simplifies the code, while maintaining complete backward
> compatability. Now:
>
> - if ->start() is given a pos of zero, it should return an iterator
> placed at the start of the sequence
> - if ->start() is given a non-zero pos, it should return the iterator
> in the same state it was after the last ->start or ->next.
>
> This is particularly useful for interators which walk the multiple
> chains in a hash table, e.g. using rhashtable_walk*. See
> fs/gfs2/glock.c and drivers/staging/lustre/lustre/llite/vvp_dev.c
For the docs part:
Acked-by: Jonathan Corbet <cor...@lwn.net>
jon
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