svn commit: r334660 - head/sys/compat/linuxkpi/common/include/linux

[Hans Petter Selasky]

Author: hselasky
Date: Tue Jun  5 15:37:28 2018
New Revision: 334660
URL: https://svnweb.freebsd.org/changeset/base/334660

Log:
  Add "access" function pointer to the "vm_operations_struct" structure
  in the LinuxKPI. While at it document when to use the "virtual_address" or
  the "address" field in the "vm_fault" structure.
  
  Submitted by:	Johannes Lundberg <johalun0 at gmail.com>
  MFC after:	1 week
  Sponsored by:	Mellanox Technologies
  Sponsored by:	Limelight Networks

Modified:
  head/sys/compat/linuxkpi/common/include/linux/mm.h

Modified: head/sys/compat/linuxkpi/common/include/linux/mm.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/mm.h	Tue Jun  5 15:30:36 2018	(r334659)
+++ head/sys/compat/linuxkpi/common/include/linux/mm.h	Tue Jun  5 15:37:28 2018	(r334660)
@@ -120,8 +120,8 @@ struct vm_fault {
 	pgoff_t	pgoff;
 	union {
 		/* user-space address */
-		void *virtual_address;
-		unsigned long address;
+		void *virtual_address;	/* < 4.11 */
+		unsigned long address;	/* >= 4.11 */
 	};
 	struct page *page;
 	struct vm_area_struct *vma;
@@ -131,6 +131,7 @@ struct vm_operations_struct {
 	void    (*open) (struct vm_area_struct *);
 	void    (*close) (struct vm_area_struct *);
 	int     (*fault) (struct vm_area_struct *, struct vm_fault *);
+	int	(*access) (struct vm_area_struct *, unsigned long, void *, int, int);
 };
 
 /*