4 files changed, 43 insertions, 1 deletions
diff --git a/include/os/freebsd/spl/sys/mutex.h b/include/os/freebsd/spl/sys/mutex.h
index 8cfe56c75..bbff9fe80 100644
--- a/include/os/freebsd/spl/sys/mutex.h
+++ b/include/os/freebsd/spl/sys/mutex.h
@@ -70,4 +70,5 @@ typedef enum {
 #define	mutex_exit(lock)	sx_xunlock(lock)
 #define	mutex_owned(lock)	sx_xlocked(lock)
 #define	mutex_owner(lock)	sx_xholder(lock)
+
 #endif	/* _OPENSOLARIS_SYS_MUTEX_H_ */
diff --git a/include/os/freebsd/spl/sys/param.h b/include/os/freebsd/spl/sys/param.h
index 92724e332..96440dce0 100644
--- a/include/os/freebsd/spl/sys/param.h
+++ b/include/os/freebsd/spl/sys/param.h
@@ -33,6 +33,7 @@
 #include <sys/types.h>
 #include_next <sys/param.h>
 #define	PAGESIZE	PAGE_SIZE
+#define	PAGESHIFT	PAGE_SHIFT
 #define	ptob(x)		((uint64_t)(x) << PAGE_SHIFT)
 #ifdef _KERNEL
 #include <sys/systm.h>
diff --git a/include/os/freebsd/spl/sys/uio.h b/include/os/freebsd/spl/sys/uio.h
index b9d41903e..2bd5bdb80 100644
--- a/include/os/freebsd/spl/sys/uio.h
+++ b/include/os/freebsd/spl/sys/uio.h
@@ -34,13 +34,30 @@
 #include_next <sys/uio.h>
 #include <sys/_uio.h>
 #include <sys/debug.h>
+#include <sys/sysmacros.h>
+
+/*
+ * uio_extflg: extended flags
+ */
+#define	UIO_DIRECT	0x0001	/* Direct I/O requset */
 
 typedef	struct iovec	iovec_t;
 typedef	enum uio_seg	zfs_uio_seg_t;
 typedef	enum uio_rw	zfs_uio_rw_t;
 
+/*
+ * This structure is used when doing Direct I/O.
+ */
+typedef struct {
+	vm_page_t	*pages;
+	int		npages;
+} zfs_uio_dio_t;
+
 typedef struct zfs_uio {
 	struct uio	*uio;
+	offset_t	uio_soffset;
+	uint16_t	uio_extflg;
+	zfs_uio_dio_t	uio_dio;
 } zfs_uio_t;
 
 #define	GET_UIO_STRUCT(u)	(u)->uio
@@ -52,6 +69,7 @@ typedef struct zfs_uio {
 #define	zfs_uio_iovbase(u, idx)	GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_base
 #define	zfs_uio_td(u)		GET_UIO_STRUCT(u)->uio_td
 #define	zfs_uio_rw(u)		GET_UIO_STRUCT(u)->uio_rw
+#define	zfs_uio_soffset(u)	(u)->uio_soffset
 #define	zfs_uio_fault_disable(u, set)
 #define	zfs_uio_prefaultpages(size, u)	(0)
 
@@ -62,6 +80,13 @@ zfs_uio_setoffset(zfs_uio_t *uio, offset_t off)
 }
 
 static inline void
+zfs_uio_setsoffset(zfs_uio_t *uio, offset_t off)
+{
+	ASSERT3U(zfs_uio_offset(uio), ==, off);
+	zfs_uio_soffset(uio) = off;
+}
+
+static inline void
 zfs_uio_advance(zfs_uio_t *uio, ssize_t size)
 {
 	zfs_uio_resid(uio) -= size;
@@ -71,7 +96,11 @@ zfs_uio_advance(zfs_uio_t *uio, ssize_t size)
 static __inline void
 zfs_uio_init(zfs_uio_t *uio, struct uio *uio_s)
 {
-	GET_UIO_STRUCT(uio) = uio_s;
+	memset(uio, 0, sizeof (zfs_uio_t));
+	if (uio_s != NULL) {
+		GET_UIO_STRUCT(uio) = uio_s;
+		zfs_uio_soffset(uio) = uio_s->uio_offset;
+	}
 }
 
 int zfs_uio_fault_move(void *p, size_t n, zfs_uio_rw_t dir, zfs_uio_t *uio);
diff --git a/include/os/freebsd/zfs/sys/abd_os.h b/include/os/freebsd/zfs/sys/abd_os.h
index 57122ee83..be825b3b8 100644
--- a/include/os/freebsd/zfs/sys/abd_os.h
+++ b/include/os/freebsd/zfs/sys/abd_os.h
@@ -26,10 +26,15 @@
 #ifndef _ABD_OS_H
 #define	_ABD_OS_H
 
+#include <sys/vm.h>
+#include <vm/vm_page.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+struct abd;
+
 struct abd_scatter {
 	uint_t		abd_offset;
 	void		*abd_chunks[1]; /* actually variable-length */
@@ -37,8 +42,14 @@ struct abd_scatter {
 
 struct abd_linear {
 	void		*abd_buf;
+#if defined(_KERNEL)
+	struct sf_buf 	*sf; /* for LINEAR_PAGE FreeBSD */
+#endif
 };
 
+__attribute__((malloc))
+struct abd *abd_alloc_from_pages(vm_page_t *, unsigned long, uint64_t);
+
 #ifdef __cplusplus
 }
 #endif