xnu-1504.9.17.tar.gz

[apple/xnu.git] / bsd / sys / ubc_internal.h

diff --git a/bsd/sys/ubc_internal.h b/bsd/sys/ubc_internal.h
index 9ac742bc1b36d2b73c24c7620fc3a7e21019bc68..775a8457b775c1687f451cdf7a4611ff8262881a 100644 (file)
--- a/bsd/sys/ubc_internal.h
+++ b/bsd/sys/ubc_internal.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 1999-2008 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -58,8 +58,13 @@
 
 extern struct zone     *ubc_info_zone;
 
+/* 
+ * Maximum number of vfs clusters per vnode
+ */
+#define MAX_CLUSTERS   CONFIG_MAX_CLUSTERS
 
-#define MAX_CLUSTERS 4 /* maximum number of vfs clusters per vnode */
+#define SPARSE_PUSH_LIMIT 4    /* limit on number of concurrent sparse pushes outside of the cl_lockw */
+                                /* once we reach this limit, we'll hold the lock */
 
 struct cl_extent {
        daddr64_t       b_addr;
@@ -82,7 +87,8 @@ struct cl_readahead {
 struct cl_writebehind {
        lck_mtx_t       cl_lockw;
         void   *       cl_scmap;                       /* pointer to sparse cluster map */
-        int            cl_scdirty;                     /* number of dirty pages in the sparse cluster map */
+       int             cl_sparse_pushes;               /* number of pushes outside of the cl_lockw in progress */
+       int             cl_sparse_wait;                 /* synchronous push is in progress */
        int             cl_number;                      /* number of packed write behind clusters currently valid */
        struct cl_wextent cl_clusters[MAX_CLUSTERS];    /* packed write behind clusters */
 };
@@ -92,9 +98,9 @@ struct cs_blob {
        struct cs_blob  *csb_next;
        cpu_type_t      csb_cpu_type;
        unsigned int    csb_flags;
-       off_t           csb_base_offset;
-       off_t           csb_start_offset;
-       off_t           csb_end_offset;
+       off_t           csb_base_offset;        /* Offset of Mach-O binary in fat binary */
+       off_t           csb_start_offset;       /* Blob coverage area start, from csb_base_offset */
+       off_t           csb_end_offset;         /* Blob coverage area end, from csb_base_offset */
        ipc_port_t      csb_mem_handle;
        vm_size_t       csb_mem_size;
        vm_offset_t     csb_mem_offset;
@@ -109,7 +115,7 @@ struct cs_blob {
 struct ubc_info {
        memory_object_t         ui_pager;       /* pager */
        memory_object_control_t ui_control;     /* VM control for the pager */
-       long                    ui_flags;       /* flags */
+       uint32_t                ui_flags;       /* flags */
        vnode_t                 ui_vnode;       /* vnode for this ubc_info */
        kauth_cred_t            ui_ucred;       /* holds credentials for NFS paging */
        off_t                   ui_size;        /* file size for the vnode */
@@ -135,7 +141,7 @@ struct ubc_info {
  */
 
 __BEGIN_DECLS
-__private_extern__ void ubc_init(void);
+__private_extern__ void ubc_init(void) __attribute__((section("__TEXT, initcode")));;
 __private_extern__ int ubc_umount(mount_t mp);
 __private_extern__ void        ubc_unmountall(void);
 __private_extern__ memory_object_t ubc_getpager(vnode_t);
@@ -144,8 +150,8 @@ __private_extern__ void     ubc_destroy_named(vnode_t);
 /* internal only */
 __private_extern__ void        cluster_release(struct ubc_info *);
 __private_extern__ uint32_t cluster_max_io_size(mount_t, int);
- 
- 
+__private_extern__ uint32_t cluster_hard_throttle_limit(vnode_t, uint32_t *, uint32_t);
+
 
 /* Flags for ubc_getobject() */
 #define UBC_FLAGS_NONE         0x0000
@@ -161,12 +167,11 @@ void      ubc_info_deallocate(struct ubc_info *);
 int    ubc_isinuse(vnode_t, int);
 int    ubc_isinuse_locked(vnode_t, int, int);
 
-int    ubc_page_op(vnode_t, off_t, int, ppnum_t *, int *);
-int    ubc_range_op(vnode_t, off_t, off_t, int, int *);
-
 int    ubc_getcdhash(vnode_t, off_t, unsigned char *);
 
+#ifdef XNU_KERNEL_PRIVATE
 int UBCINFOEXISTS(vnode_t);
+#endif /* XNU_KERNEL_PRIVATE */
 
 /* code signing */
 struct cs_blob;