On Mon, 11 Sep 2023 20:30:40 +0000 Chuck Lever III <chuck.lever@xxxxxxxxxx> wrote: > > > > On Sep 11, 2023, at 2:13 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > On Mon, 11 Sep 2023 10:39:43 -0400 Chuck Lever <cel@xxxxxxxxxx> wrote: > > > >> lwq is a FIFO single-linked queue that only requires a spinlock > >> for dequeueing, which happens in process context. Enqueueing is atomic > >> with no spinlock and can happen in any context. > > > > What is the advantage of this over using one of the library > > facilities which we already have? > > I'll let the patch author respond to that question, but let me pose > one of my own: What pre-existing facilities are you thinking of, so > that I may have a look? Well, I assume that plain old list_heads could be recruited for this requirement. And I hope that a FIFO could be implemented using kfifo ;)
