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-rw-r--r--mm/vmalloc.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 46aab4dbf618..04f5e320e744 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -522,13 +522,24 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end,
}
/*
+ * Kick off a purge of the outstanding lazy areas. Don't bother if somebody
+ * is already purging.
+ */
+static void try_purge_vmap_area_lazy(void)
+{
+ unsigned long start = ULONG_MAX, end = 0;
+
+ __purge_vmap_area_lazy(&start, &end, 0, 0);
+}
+
+/*
* Kick off a purge of the outstanding lazy areas.
*/
static void purge_vmap_area_lazy(void)
{
unsigned long start = ULONG_MAX, end = 0;
- __purge_vmap_area_lazy(&start, &end, 0, 0);
+ __purge_vmap_area_lazy(&start, &end, 1, 0);
}
/*
@@ -539,7 +550,7 @@ static void free_unmap_vmap_area(struct vmap_area *va)
va->flags |= VM_LAZY_FREE;
atomic_add((va->va_end - va->va_start) >> PAGE_SHIFT, &vmap_lazy_nr);
if (unlikely(atomic_read(&vmap_lazy_nr) > lazy_max_pages()))
- purge_vmap_area_lazy();
+ try_purge_vmap_area_lazy();
}
static struct vmap_area *find_vmap_area(unsigned long addr)