svn commit: r348924 - stable/12/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Alexander Motin]

Author: mav
Date: Tue Jun 11 14:32:03 2019
New Revision: 348924
URL: https://svnweb.freebsd.org/changeset/base/348924

Log:
  MFC r348788: 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.

Modified:
  stable/12/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- stable/12/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Tue Jun 11 14:30:41 2019	(r348923)
+++ stable/12/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Tue Jun 11 14:32:03 2019	(r348924)
@@ -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);
 }