mm: Extend gfp masking to the page allocator

The page allocator also needs the masking of gfp flags during boot,
so this moves it out of slab/slub and uses it with the page allocator
as well.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 11 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 4c6449310a0e..ce62b770e2fc 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -179,12 +179,6 @@ static enum {
         SYSFS           /* Sysfs up */
 } slab_state = DOWN;
 
-/*
- * The slab allocator is initialized with interrupts disabled. Therefore, make
- * sure early boot allocations don't accidentally enable interrupts.
- */
-static gfp_t slab_gfp_mask __read_mostly = SLAB_GFP_BOOT_MASK;
-
 /* A list of all slab caches on the system */
 static DECLARE_RWSEM(slub_lock);
 static LIST_HEAD(slab_caches);
@@ -1692,7 +1686,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
         unsigned long flags;
         unsigned int objsize;
 
-        gfpflags &= slab_gfp_mask;
+        gfpflags &= gfp_allowed_mask;
 
         lockdep_trace_alloc(gfpflags);
         might_sleep_if(gfpflags & __GFP_WAIT);
@@ -3220,10 +3214,6 @@ void __init kmem_cache_init(void)
 
 void __init kmem_cache_init_late(void)
 {
-        /*
-         * Interrupts are enabled now so all GFP allocations are safe.
-         */
-        slab_gfp_mask = __GFP_BITS_MASK;
 }
 
 /*