bcache in userspace; userspace fsck

1 files changed, 78 insertions, 0 deletions

diff --git a/include/linux/mempool.h b/include/linux/mempool.h
new file mode 100644
index 0000000..c2789f9
--- /dev/null
+++ b/include/linux/mempool.h
@@ -0,0 +1,78 @@
+/*
+ * memory buffer pool support
+ */
+#ifndef _LINUX_MEMPOOL_H
+#define _LINUX_MEMPOOL_H
+
+#include <linux/compiler.h>
+#include <linux/bug.h>
+#include <linux/slab.h>
+
+struct kmem_cache;
+
+typedef struct mempool_s {
+	size_t		elem_size;
+} mempool_t;
+
+extern int mempool_resize(mempool_t *pool, int new_min_nr);
+
+static inline void mempool_free(void *element, mempool_t *pool)
+{
+	free(element);
+}
+
+static inline void *mempool_alloc(mempool_t *pool, gfp_t gfp_mask) __malloc
+{
+	BUG_ON(!pool->elem_size);
+	return kmalloc(pool->elem_size, gfp_mask);
+}
+
+static inline void mempool_exit(mempool_t *pool) {}
+
+static inline void mempool_destroy(mempool_t *pool)
+{
+	free(pool);
+}
+
+static inline int
+mempool_init_slab_pool(mempool_t *pool, int min_nr, struct kmem_cache *kc)
+{
+	pool->elem_size = 0;
+	return 0;
+}
+
+static inline mempool_t *
+mempool_create_slab_pool(int min_nr, struct kmem_cache *kc)
+{
+	mempool_t *pool = malloc(sizeof(*pool));
+	pool->elem_size = 0;
+	return pool;
+}
+
+static inline int mempool_init_kmalloc_pool(mempool_t *pool, int min_nr, size_t size)
+{
+	pool->elem_size = size;
+	return 0;
+}
+
+static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size)
+{
+	mempool_t *pool = malloc(sizeof(*pool));
+	pool->elem_size = size;
+	return pool;
+}
+
+static inline int mempool_init_page_pool(mempool_t *pool, int min_nr, int order)
+{
+	pool->elem_size = PAGE_SIZE << order;
+	return 0;
+}
+
+static inline mempool_t *mempool_create_page_pool(int min_nr, int order)
+{
+	mempool_t *pool = malloc(sizeof(*pool));
+	pool->elem_size = PAGE_SIZE << order;
+	return pool;
+}
+
+#endif /* _LINUX_MEMPOOL_H */