svn commit: r348788 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Alexander Motin]

Author: mav
Date: Fri Jun  7 19:03:17 2019
New Revision: 348788
URL: https://svnweb.freebsd.org/changeset/base/348788

Log:
  Explicitly start ARC adjustment on limits change.
  
  While formally it is not necessary, but the sooner it start, the sooner it
  finish, and supposedly less disturbing for workload it will be.
  
  MFC after:	2 weeks

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Fri Jun  7 18:52:36 2019	(r348787)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Fri Jun  7 19:03:17 2019	(r348788)
@@ -1233,6 +1233,12 @@ sysctl_vfs_zfs_arc_meta_limit(SYSCTL_HANDLER_ARGS)
 		return (EINVAL);
 
 	arc_meta_limit = val;
+
+	mutex_enter(&arc_adjust_lock);
+	arc_adjust_needed = B_TRUE;
+	mutex_exit(&arc_adjust_lock);
+	zthr_wakeup(arc_adjust_zthr);
+
 	return (0);
 }
 
@@ -1293,6 +1299,11 @@ sysctl_vfs_zfs_arc_max(SYSCTL_HANDLER_ARGS)
 		arc_c = arc_c / 2;
 
 	zfs_arc_max = arc_c;
+
+	mutex_enter(&arc_adjust_lock);
+	arc_adjust_needed = B_TRUE;
+	mutex_exit(&arc_adjust_lock);
+	zthr_wakeup(arc_adjust_zthr);
 
 	return (0);
 }