On 03/19/2015 09:09 PM, Chris Wilson wrote:
On Thu, Mar 19, 2015 at 05:35:35PM +0000, Tvrtko Ursulin wrote:
- list_for_each_entry_safe(tmp, next,
- &pool->cache_list, batch_pool_list) {
+ n = fls(size >> PAGE_SHIFT) - 1;
Is this better in some way that size / PAGE_SIZE - 1? Or I went from
trusting compiler smartness to little to too much? :)
The month has 31 days in it, we use >> PAGE_SHIFT, otherwise /
PAGE_SIZE. Note the fls() puts these into power-of-two buckets not pure
page-count buckets.
Yeah silly me.. was thinking about 1-2 page buckets form the commit
message only. Perhaps add a comment about bucket sizes above n = fls
line if you feel like it. Shouldn't harm.
Regards,
Tvrtko
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