On Fri, 26 Nov 2010 15:38:51 +0100 Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote: > Make mmu_gather preemptible by using a small on stack list and use > an option allocation to speed things up. > > Preemptible mmu_gather is desired in general and usable once > i_mmap_lock becomes a mutex. Doing it before the mutex conversion > saves us from having to rework the code by moving the mmu_gather > bits inside the i_mmap_lock. > > Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > Cc: David Miller <davem@xxxxxxxxxxxxx> > Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> > Cc: Russell King <rmk@xxxxxxxxxxxxxxxx> > Cc: Paul Mundt <lethal@xxxxxxxxxxxx> > Cc: Jeff Dike <jdike@xxxxxxxxxxx> > Cc: Tony Luck <tony.luck@xxxxxxxxx> > Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Interesting, Hmm, how about using the 1st freed pages as tlb->pages rathet than calling alloc_page() ? no benefits ? Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>