Re: [PATCH -next RFC v2 8/8] sbitmap: wake up the number of threads based on required tags

From: Bart Van Assche
Date: Sat Apr 09 2022 - 00:16:45 EST


On 4/8/22 19:17, yukuai (C) wrote:
I think the reason to wake up 'wake_batch' waiters is to make sure
wakers will use up 'wake_batch' tags that is just freed, because each
wakers should aquire at least one tag. Thus I think if we can make sure
wakers will use up 'wake_batch' tags, it's ok to wake up less waiters.

Hmm ... I think it's up to you to (a) explain this behavior change in detail in the commit message and (b) to prove that this behavior change won't cause trouble (I guess this change will cause trouble).

Thanks,

Bart.