On Wed 11-05-16 10:32:11, Christoph Lameter wrote: > Subject: Do not build vmstat_refresh if there is no procfs support > > It makes no sense to build functionality into the kernel that > cannot be used and causes build issues. > > Signed-off-by: Christoph Lameter <c...@linux.com> > > Index: linux/mm/vmstat.c > =================================================================== > --- linux.orig/mm/vmstat.c > +++ linux/mm/vmstat.c > @@ -1358,7 +1358,6 @@ static const struct file_operations proc > .llseek = seq_lseek, > .release = seq_release, > }; > -#endif /* CONFIG_PROC_FS */ > > #ifdef CONFIG_SMP > static struct workqueue_struct *vmstat_wq;
This doesn't work because it makes the whole vmstat_wq depend on CONFIG_PROC_FS. Which is obviously bad because we both rely on doing the periodic sync even when counters are not exported to the userspace and it wound't compile anyway... -- Michal Hocko SUSE Labs
