On Fri, Aug 02, 2019 at 11:07:53AM +0200, Thomas Gleixner wrote: > Last time I did, there was resistance :)
Do you have a pointer? Note that in the buffer head case maybe a hash lock based on the page address is even better, as we only ever use the lock in the first buffer head of a page anyway.. > What about the page lock? > > mm/slub.c: bit_spin_lock(PG_locked, &page->flags); One caller ouf of a gazillion that spins on the page lock instead of sleepign on it like everyone else. That should not have passed your smell test to start with :)
