kernel: vcache: Improve vcache add/pull interface

Require internal add/pull routines to be passed a pointer to the vcache
to be operated on. This makes it easier to support for per-process vcaches and LZVM.

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/sys/include/sys/vnode.h b/sys/include/sys/vnode.h
index 33d5b17..d9f9afe 100644
--- a/sys/include/sys/vnode.h
+++ b/sys/include/sys/vnode.h
@@ -48,6 +48,15 @@ struct vnode {
     TAILQ_ENTRY(vnode) vcache_link;
 };
 
+/*
+ * Vnode cache, can be per-process or
+ * global.
+ */
+struct vcache {
+    TAILQ_HEAD(vcache_head, vnode) q;
+    ssize_t size;    /* In entries (-1 not set up) */
+};
+
 #define vfs_vref(VP) (atomic_inc_int(&(VP)->refcount))
 
 /* vcache types */