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From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Sun, 25 Feb 2018 10:24:59 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r329960 -
 stable/11/sys/compat/linuxkpi/common/include/linux
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Author: hselasky
Date: Sun Feb 25 10:24:59 2018
New Revision: 329960
URL: https://svnweb.freebsd.org/changeset/base/329960

Log:
  MFC r329467:
  Add support for mmgrab() function in the LinuxKPI.
  
  Submitted by:	Johannes Lundberg <johalun0@gmail.com>
  Sponsored by:	Mellanox Technologies

Modified:
  stable/11/sys/compat/linuxkpi/common/include/linux/mm_types.h
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/compat/linuxkpi/common/include/linux/mm_types.h
==============================================================================
--- stable/11/sys/compat/linuxkpi/common/include/linux/mm_types.h	Sun Feb 25 10:24:08 2018	(r329959)
+++ stable/11/sys/compat/linuxkpi/common/include/linux/mm_types.h	Sun Feb 25 10:24:59 2018	(r329960)
@@ -62,6 +62,12 @@ mmput(struct mm_struct *mm)
 		mmdrop(mm);
 }
 
+static inline void
+mmgrab(struct mm_struct *mm)
+{
+	atomic_inc(&mm->mm_count);
+}
+
 extern struct mm_struct *linux_get_task_mm(struct task_struct *);
 #define	get_task_mm(task) linux_get_task_mm(task)