s390/mm: use shared variables for sysctl range check

Since commit eec4844fae7c ("proc/sysctl: add shared variables for range
check") special shared variables are available for sysctl range check.
Reuse them for /proc/sys/vm/allocate_pgste proc handler.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 99e0621..54fcdf6 100644 (file)
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -17,8 +17,6 @@
 
 #ifdef CONFIG_PGSTE
 
-static int page_table_allocate_pgste_min = 0;
-static int page_table_allocate_pgste_max = 1;
 int page_table_allocate_pgste = 0;
 EXPORT_SYMBOL(page_table_allocate_pgste);
 
@@ -29,8 +27,8 @@ static struct ctl_table page_table_sysctl[] = {
                .maxlen         = sizeof(int),
                .mode           = S_IRUGO | S_IWUSR,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &page_table_allocate_pgste_min,
-               .extra2         = &page_table_allocate_pgste_max,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_ONE,
        },
        { }
 };