slob: Remove various small accessors

Those have become so simple that they are no longer needed.

Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
signed-off-by: Christoph Lameter <cl@linux.com>

Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/mm/slob.c b/mm/slob.c
index 74c3bb2..c85265d 100644 (file)
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -92,14 +92,6 @@ struct slob_block {
 typedef struct slob_block slob_t;
 
 /*
- * free_slob_page: call before a slob_page is returned to the page allocator.
- */
-static inline void free_slob_page(struct page *sp)
-{
-       reset_page_mapcount(sp);
-}
-
-/*
  * All partially free slob pages go on these lists.
  */
 #define SLOB_BREAK1 256
@@ -109,29 +101,6 @@ static LIST_HEAD(free_slob_medium);
 static LIST_HEAD(free_slob_large);
 
 /*
- * is_slob_page: True for all slob pages (false for bigblock pages)
- */
-static inline int is_slob_page(struct page *sp)
-{
-       return PageSlab(sp);
-}
-
-static inline void set_slob_page(struct page *sp)
-{
-       __SetPageSlab(sp);
-}
-
-static inline void clear_slob_page(struct page *sp)
-{
-       __ClearPageSlab(sp);
-}
-
-static inline struct page *slob_page(const void *addr)
-{
-       return virt_to_page(addr);
-}
-
-/*
  * slob_page_free: true for pages on free_slob_pages list.
  */
 static inline int slob_page_free(struct page *sp)
@@ -347,8 +316,8 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node)
                b = slob_new_pages(gfp & ~__GFP_ZERO, 0, node);
                if (!b)
                        return NULL;
-               sp = slob_page(b);
-               set_slob_page(sp);
+               sp = virt_to_page(b);
+               __SetPageSlab(sp);
 
                spin_lock_irqsave(&slob_lock, flags);
                sp->units = SLOB_UNITS(PAGE_SIZE);
@@ -380,7 +349,7 @@ static void slob_free(void *block, int size)
                return;
        BUG_ON(!size);
 
-       sp = slob_page(block);
+       sp = virt_to_page(block);
        units = SLOB_UNITS(size);
 
        spin_lock_irqsave(&slob_lock, flags);
@@ -390,8 +359,8 @@ static void slob_free(void *block, int size)
                if (slob_page_free(sp))
                        clear_slob_page_free(sp);
                spin_unlock_irqrestore(&slob_lock, flags);
-               clear_slob_page(sp);
-               free_slob_page(sp);
+               __ClearPageSlab(sp);
+               reset_page_mapcount(sp);
                slob_free_pages(b, 0);
                return;
        }
@@ -508,8 +477,8 @@ void kfree(const void *block)
                return;
        kmemleak_free(block);
 
-       sp = slob_page(block);
-       if (is_slob_page(sp)) {
+       sp = virt_to_page(block);
+       if (PageSlab(sp)) {
                int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
                unsigned int *m = (unsigned int *)(block - align);
                slob_free(m, *m + align);
@@ -527,8 +496,8 @@ size_t ksize(const void *block)
        if (unlikely(block == ZERO_SIZE_PTR))
                return 0;
 
-       sp = slob_page(block);
-       if (is_slob_page(sp)) {
+       sp = virt_to_page(block);
+       if (PageSlab(sp)) {
                int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
                unsigned int *m = (unsigned int *)(block - align);
                return SLOB_UNITS(*m) * SLOB_UNIT;