Messages in this thread | ![/](/images/icornerl.gif) | | From | Linus Torvalds <> | Date | Sun, 28 Apr 2019 17:10:15 -0700 | Subject | Re: [PATCH-tip v7 00/20] locking/rwsem: Rwsem rearchitecture part 2 |
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On Sun, Apr 28, 2019 at 4:12 PM Waiman Long <longman@redhat.com> wrote: > > I implemented your suggestion in patch 1 as it will produce simpler and > faster code. However, one of the changes in my patchset is to wake up > all the readers in the wait list. This means I have to jump over the > writers and wake up the readers behind them as well. See patch 11 for > details. As a result, I have to revert back to use list_add_tail() and > list_for_each_entry_safe() for the first pass. That is why the diff for > the whole patchset is just the below change. It is done on purpose, not > an omission.
Ahh, ok. In that case I suspect the clever code isn't even worth it, since it very much depends on just splitting the list in a fixed place.
Linus
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