The vmalloc purge lock can be a mutex so we can sleep while a purge is
going on (purge involves a global kernel TLB invalidate, so it can take
quite a while).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
#include <linux/highmem.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/highmem.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
+#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end,
int sync, int force_flush)
{
static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end,
int sync, int force_flush)
{
- static DEFINE_SPINLOCK(purge_lock);
+ static DEFINE_MUTEX(purge_lock);
LIST_HEAD(valist);
struct vmap_area *va;
int nr = 0;
LIST_HEAD(valist);
struct vmap_area *va;
int nr = 0;
* the case that isn't actually used at the moment anyway.
*/
if (!sync && !force_flush) {
* the case that isn't actually used at the moment anyway.
*/
if (!sync && !force_flush) {
- if (!spin_trylock(&purge_lock))
+ if (!mutex_trylock(&purge_lock))
- spin_lock(&purge_lock);
+ mutex_lock(&purge_lock);
rcu_read_lock();
list_for_each_entry_rcu(va, &vmap_area_list, list) {
rcu_read_lock();
list_for_each_entry_rcu(va, &vmap_area_list, list) {
__free_vmap_area(va);
spin_unlock(&vmap_area_lock);
}
__free_vmap_area(va);
spin_unlock(&vmap_area_lock);
}
- spin_unlock(&purge_lock);
+ mutex_unlock(&purge_lock);