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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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29 * This file is part of Lustre, http://www.lustre.org/
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32 * libcfs/include/libcfs/linux/linux-mem.h
34 * Basic library routines.
37 #ifndef __LIBCFS_LINUX_CFS_MEM_H__
38 #define __LIBCFS_LINUX_CFS_MEM_H__
41 #include <linux/vmalloc.h>
42 #include <linux/pagemap.h>
43 #include <linux/slab.h>
45 # include <linux/mm_inline.h>
51 # define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
52 struct shrinker *shrinker, \
53 struct shrink_control *sc
54 # define shrink_param(sc, var) ((sc)->var)
56 #ifdef HAVE_SHRINKER_COUNT
58 unsigned long (*count)(struct shrinker *,
59 struct shrink_control *sc);
60 unsigned long (*scan)(struct shrinker *,
61 struct shrink_control *sc);
63 # define DEF_SHRINKER_VAR(name, shrink, count_obj, scan_obj) \
64 struct shrinker_var name = { .count = count_obj, .scan = scan_obj }
67 int (*shrink)(SHRINKER_ARGS(sc, nr_to_scan, gfp_mask));
69 # define DEF_SHRINKER_VAR(name, shrinker, count, scan) \
70 struct shrinker_var name = { .shrink = shrinker }
71 # define SHRINK_STOP (~0UL)
75 struct shrinker *set_shrinker(int seek, struct shrinker_var *var)
79 s = kzalloc(sizeof(*s), GFP_KERNEL);
83 #ifdef HAVE_SHRINKER_COUNT
84 s->count_objects = var->count;
85 s->scan_objects = var->scan;
87 s->shrink = var->shrink;
97 void remove_shrinker(struct shrinker *shrinker)
102 unregister_shrinker(shrinker);
106 #endif /* __LINUX_CFS_MEM_H__ */