Commit 3c6a4cba authored by Luis Chamberlain's avatar Luis Chamberlain
Browse files

mm: fix unused variable kernel warning when SYSCTL=n 



When CONFIG_SYSCTL=n the variable dirty_bytes_min which is just used
as a minimum to a proc handler is not used. So just move this under
the ifdef for CONFIG_SYSCTL.

Fixes: aa779e51 ("mm: move page-writeback sysctls to their own file")
Reported-by: default avatarkernel test robot <lkp@intel.com>
Acked-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLuis Chamberlain <mcgrof@kernel.org>
parent 988f11e0

mm/page-writeback.c

+4 −3
Original line number Diff line number Diff line
@@ -89,9 +89,6 @@ static int vm_highmem_is_dirtyable; 
 */

static int vm_dirty_ratio = 20;



/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */

static const unsigned long dirty_bytes_min = 2 * PAGE_SIZE;



/*

 * vm_dirty_bytes starts at 0 (disabled) so that it is a function of

 * vm_dirty_ratio * the amount of dirtyable memory
@@ -2077,6 +2074,10 @@ static int page_writeback_cpu_online(unsigned int cpu) 
}



#ifdef CONFIG_SYSCTL



/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */

static const unsigned long dirty_bytes_min = 2 * PAGE_SIZE;



static struct ctl_table vm_page_writeback_sysctls[] = {

	{

		.procname   = "dirty_background_ratio",