Slab allocators: remove useless __GFP_NO_GROW flag

There is no user remaining and I have never seen any use of that flag.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 2a7d15b..97a36c3 100644 (file)
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -40,7 +40,6 @@ struct vm_area_struct;
 #define __GFP_REPEAT   ((__force gfp_t)0x400u) /* Retry the allocation.  Might fail */
 #define __GFP_NOFAIL   ((__force gfp_t)0x800u) /* Retry for ever.  Cannot fail */
 #define __GFP_NORETRY  ((__force gfp_t)0x1000u)/* Do not retry.  Might fail */
-#define __GFP_NO_GROW  ((__force gfp_t)0x2000u)/* Slab internal usage */
 #define __GFP_COMP     ((__force gfp_t)0x4000u)/* Add compound page metadata */
 #define __GFP_ZERO     ((__force gfp_t)0x8000u)/* Return zeroed page on success */
 #define __GFP_NOMEMALLOC ((__force gfp_t)0x10000u) /* Don't use emergency reserves */
@@ -53,7 +52,7 @@ struct vm_area_struct;
 /* if you forget to add the bitmask here kernel will crash, period */
 #define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
                        __GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
-                       __GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP| \
+                       __GFP_NOFAIL|__GFP_NORETRY|__GFP_COMP| \
                        __GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE)
 
 /* This equals 0, but use constants in case they ever change */

diff --git a/mm/slab.c b/mm/slab.c
index 52ecf75..5920a41 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2746,9 +2746,7 @@ static int cache_grow(struct kmem_cache *cachep,
         * Be lazy and only check for valid flags here,  keeping it out of the
         * critical path in kmem_cache_alloc().
         */
-       BUG_ON(flags & ~(GFP_DMA | GFP_LEVEL_MASK | __GFP_NO_GROW));
-       if (flags & __GFP_NO_GROW)
-               return 0;
+       BUG_ON(flags & ~(GFP_DMA | GFP_LEVEL_MASK));
 
        ctor_flags = SLAB_CTOR_CONSTRUCTOR;
        local_flags = (flags & GFP_LEVEL_MASK);
@@ -3252,7 +3250,7 @@ retry:
                                        flags | GFP_THISNODE, nid);
        }
 
-       if (!obj && !(flags & __GFP_NO_GROW)) {
+       if (!obj) {
                /*
                 * This allocation will be performed within the constraints
                 * of the current cpuset / memory policy requirements.

diff --git a/mm/slub.c b/mm/slub.c
index 347e448..a632348 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -815,9 +815,6 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
        void *last;
        void *p;
 
-       if (flags & __GFP_NO_GROW)
-               return NULL;
-
        BUG_ON(flags & ~(GFP_DMA | GFP_LEVEL_MASK));
 
        if (flags & __GFP_WAIT)