*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
#ifndef __LIBCFS_LINUX_CFS_MEM_H__
#define __LIBCFS_LINUX_CFS_MEM_H__
-#ifndef __LIBCFS_LIBCFS_H__
-#error Do not #include this file directly. #include <libcfs/libcfs.h> instead
-#endif
-
-#ifndef __KERNEL__
-#error This include is only for kernel use.
-#endif
-
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#ifdef HAVE_MM_INLINE
# include <linux/mm_inline.h>
#endif
+#include <linux/sched.h>
+#ifdef HAVE_SCHED_HEADERS
+#include <linux/sched/mm.h>
+#endif
+
+#ifdef HAVE_TOTALRAM_PAGES_AS_FUNC
+ #ifndef cfs_totalram_pages
+ #define cfs_totalram_pages() totalram_pages()
+ #endif
+#else
+ #ifndef cfs_totalram_pages
+ #define cfs_totalram_pages() totalram_pages
+ #endif
+#endif
+
+#ifndef HAVE_MEMALLOC_RECLAIM
+static inline unsigned int memalloc_noreclaim_save(void)
+{
+ unsigned int flags = current->flags & PF_MEMALLOC;
+
+ current->flags |= PF_MEMALLOC;
+ return flags;
+}
+
+static inline void memalloc_noreclaim_restore(unsigned int flags)
+{
+ current->flags = (current->flags & ~PF_MEMALLOC) | flags;
+}
+#endif /* !HAVE_MEMALLOC_RECLAIM */
+
+#ifndef HAVE_BITMAP_ALLOC
+static inline unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags)
+{
+ return kmalloc_array(BITS_TO_LONGS(nbits), sizeof(unsigned long),
+ flags);
+}
+
+static inline unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags)
+{
+ return bitmap_alloc(nbits, flags | __GFP_ZERO);
+}
+
+static inline void bitmap_free(const unsigned long *bitmap)
+{
+ kfree(bitmap);
+}
+#endif /* !HAVE_BITMAP_ALLOC */
/*
* Shrinker
*/
-#ifdef HAVE_SHRINK_CONTROL
# define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
struct shrinker *shrinker, \
struct shrink_control *sc
# define shrink_param(sc, var) ((sc)->var)
-#else
-struct shrink_control {
- gfp_t gfp_mask;
- unsigned long nr_to_scan;
-};
-# ifdef HAVE_SHRINKER_WANT_SHRINK_PTR
-# define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
- struct shrinker *shrinker, \
- int nr_to_scan, gfp_t gfp_mask
-# else
-# define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
- int nr_to_scan, gfp_t gfp_mask
-# endif
- /* avoid conflict with spl mm_compat.h */
-# define HAVE_SHRINK_CONTROL_STRUCT 1
-# define shrink_param(sc, var) (var)
-#endif
#ifdef HAVE_SHRINKER_COUNT
struct shrinker_var {