Preliminary version of the file caching API - does not yet support journaling and such.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8843 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/drivers/fs_cache.h

@@ -0,0 +1,32 @@
+/* File System File and Block Caches
+** 
+** Distributed under the terms of the Haiku License.
+*/
+#ifndef _FS_CACHE_H
+#define _FS_CACHE_H
+
+
+#include <fs_interface.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+/* file cache */
+extern void *file_cache_create(mount_id mountID, vnode_id vnodeID, off_t size, int openMode);
+extern void file_cache_delete(void *_cacheRef);
+extern status_t file_cache_set_size(void *_cacheRef, off_t size);
+
+extern status_t file_cache_read_pages(void *_cacheRef, off_t offset,
+					const iovec *vecs, size_t count, size_t *_numBytes);
+extern status_t file_cache_write_pages(void *_cacheRef, off_t offset,
+					const iovec *vecs, size_t count, size_t *_numBytes);
+extern status_t file_cache_read(void *_cacheRef, off_t offset, void *bufferBase, size_t *_size);
+extern status_t file_cache_write(void *_cacheRef, off_t offset, const void *buffer, size_t *_size);
+
+#ifdef __cplusplus
+}
+#endif 
+
+#endif	/* _FS_CACHE_H */