Mass conversion of all copyright messages to Oracle.

[fs/lustre-release.git] / libcfs / include / libcfs / linux / linux-mem.h

diff --git a/libcfs/include/libcfs/linux/linux-mem.h b/libcfs/include/libcfs/linux/linux-mem.h
index 8fb2184..f5043bc 100644 (file)
--- a/libcfs/include/libcfs/linux/linux-mem.h
+++ b/libcfs/include/libcfs/linux/linux-mem.h
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -62,6 +62,11 @@ typedef struct page                     cfs_page_t;
 #define CFS_PAGE_SHIFT                  PAGE_CACHE_SHIFT
 #define CFS_PAGE_MASK                   (~((__u64)CFS_PAGE_SIZE-1))
 
+#define cfs_num_physpages               num_physpages
+
+#define cfs_copy_from_user(to, from, n) copy_from_user(to, from, n)
+#define cfs_copy_to_user(to, from, n)   copy_to_user(to, from, n)
+
 static inline void *cfs_page_address(cfs_page_t *page)
 {
         /*
@@ -114,6 +119,14 @@ extern void __cfs_free_pages(cfs_page_t *page, unsigned int order);
 #define libcfs_memory_pressure_set() do { current->flags |= PF_MEMALLOC; } while (0)
 #define libcfs_memory_pressure_clr() do { current->flags &= ~PF_MEMALLOC; } while (0)
 
+#if BITS_PER_LONG == 32
+/* limit to lowmem on 32-bit systems */
+#define CFS_NUM_CACHEPAGES \
+        min(cfs_num_physpages, 1UL << (30 - CFS_PAGE_SHIFT) * 3 / 4)
+#else
+#define CFS_NUM_CACHEPAGES cfs_num_physpages
+#endif
+
 /*
  * In Linux there is no way to determine whether current execution context is
  * blockable.
@@ -135,10 +148,28 @@ extern void *cfs_mem_cache_alloc ( cfs_mem_cache_t *, int);
 extern void cfs_mem_cache_free ( cfs_mem_cache_t *, void *);
 extern int cfs_mem_is_in_cache(const void *addr, const cfs_mem_cache_t *kmem);
 
-/*
- */
 #define CFS_DECL_MMSPACE                mm_segment_t __oldfs
-#define CFS_MMSPACE_OPEN                do { __oldfs = get_fs(); set_fs(get_ds());} while(0)
+#define CFS_MMSPACE_OPEN \
+        do { __oldfs = get_fs(); set_fs(get_ds());} while(0)
 #define CFS_MMSPACE_CLOSE               set_fs(__oldfs)
 
+#define CFS_SLAB_HWCACHE_ALIGN          SLAB_HWCACHE_ALIGN
+#define CFS_SLAB_KERNEL                 SLAB_KERNEL
+#define CFS_SLAB_NOFS                   SLAB_NOFS
+
+/*
+ * Shrinker
+ */
+
+#ifndef HAVE_REGISTER_SHRINKER
+/* Shrinker callback */
+typedef shrinker_t cfs_shrinker_t;
+#define cfs_set_shrinker(seeks, shrinker) set_shrinker(seeks, shrinker)
+#define cfs_remove_shrinker(shrinker)     remove_shrinker(shrinker)
+#endif /* !HAVE_REGISTER_SHRINKER */
+
+/* struct shrinker */
+#define cfs_shrinker shrinker
+
+#define CFS_DEFAULT_SEEKS                 DEFAULT_SEEKS
 #endif /* __LINUX_CFS_MEM_H__ */