* Stanislaw Gruszka <sgruszka@xxxxxxxxxx> wrote: > On Fri, Aug 09, 2013 at 03:56:03PM -0400, Mike Snitzer wrote: > > This reverts commit f3002134158092178be81339ec5a22ff80e6c308. > > > > div64_u64_rem was removed because there were no other users. > > > > But Device Mapper's I/O statistics support has a need for > > div64_u64_rem; reintroduce this helper. > > This slows down div64_u64 operation, especially on 32-bit > systems. > > Since dm statistic code is possibly not performance > critical perhaps you could use something like below > instead to calculate remainder: > > res = div64_u64(a, b); > rem = a - b*res; Or introduce a separately named helper without touching the existing methods. Thanks, Ingo -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
