nfs: disintegrate UAPI for nfs

This is to complete part of the Userspace API (UAPI) disintegration for which
the preparatory patches were pulled recently.  After these patches, userspace
headers will be segregated into:

        include/uapi/linux/.../foo.h

for the userspace interface stuff, and:

        include/linux/.../foo.h

for the strictly kernel internal stuff.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 5e98eeb2af3b..dd7c569aacad 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -29,6 +29,20 @@
 
 #ifndef __GENALLOC_H__
 #define __GENALLOC_H__
+/**
+ * Allocation callback function type definition
+ * @map: Pointer to bitmap
+ * @size: The bitmap size in bits
+ * @start: The bitnumber to start searching at
+ * @nr: The number of zeroed bits we're looking for
+ * @data: optional additional data used by @genpool_algo_t
+ */
+typedef unsigned long (*genpool_algo_t)(unsigned long *map,
+                        unsigned long size,
+                        unsigned long start,
+                        unsigned int nr,
+                        void *data);
+
 /*
  *  General purpose special memory pool descriptor.
  */
@@ -36,6 +50,9 @@ struct gen_pool {
         spinlock_t lock;
         struct list_head chunks;        /* list of chunks in this pool */
         int min_alloc_order;            /* minimum allocation order */
+
+        genpool_algo_t algo;            /* allocation function */
+        void *data;
 };
 
 /*
@@ -78,4 +95,14 @@ extern void gen_pool_for_each_chunk(struct gen_pool *,
         void (*)(struct gen_pool *, struct gen_pool_chunk *, void *), void *);
 extern size_t gen_pool_avail(struct gen_pool *);
 extern size_t gen_pool_size(struct gen_pool *);
+
+extern void gen_pool_set_algo(struct gen_pool *pool, genpool_algo_t algo,
+                void *data);
+
+extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
+                unsigned long start, unsigned int nr, void *data);
+
+extern unsigned long gen_pool_best_fit(unsigned long *map, unsigned long size,
+                unsigned long start, unsigned int nr, void *data);
+
 #endif /* __GENALLOC_H__ */