powerpc: Convert hugepd_free() to use call_rcu()

Now that call_rcu()'s callback is not invoked until after all
preempt-disable regions of code have completed (in addition to explicitly
marked RCU read-side critical sections), call_rcu() can be used in place
of call_rcu_sched().  This commit therefore makes that change.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: <linuxppc-dev@lists.ozlabs.org>

diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 8cf035e68378b70b99a49261bc02ef28cda026fd..4c01e9a01a741537c104ae64c9a30cfc867322aa 100644 (file)
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -289,7 +289,7 @@ static void hugepd_free(struct mmu_gather *tlb, void *hugepte)
 
        (*batchp)->ptes[(*batchp)->index++] = hugepte;
        if ((*batchp)->index == HUGEPD_FREELIST_SIZE) {
-               call_rcu_sched(&(*batchp)->rcu, hugepd_free_rcu_callback);
+               call_rcu(&(*batchp)->rcu, hugepd_free_rcu_callback);
                *batchp = NULL;
        }
        put_cpu_var(hugepd_freelist_cur);