svn commit: r327679 - head/sys/kern

[Ian Lepore]

Author: ian
Date: Sun Jan  7 18:07:22 2018
New Revision: 327679
URL: https://svnweb.freebsd.org/changeset/base/327679

Log:
  Use EVENTHANDLER_DIRECT_INVOKE for [un]mount events, for better performance.

Modified:
  head/sys/kern/vfs_mount.c

Modified: head/sys/kern/vfs_mount.c
==============================================================================
--- head/sys/kern/vfs_mount.c	Sun Jan  7 18:06:30 2018	(r327678)
+++ head/sys/kern/vfs_mount.c	Sun Jan  7 18:07:22 2018	(r327679)
@@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/conf.h>
+#include <sys/eventhandler.h>
 #include <sys/fcntl.h>
 #include <sys/jail.h>
 #include <sys/kernel.h>
@@ -91,6 +92,9 @@ struct mntlist mountlist = TAILQ_HEAD_INITIALIZER(moun
 struct mtx mountlist_mtx;
 MTX_SYSINIT(mountlist, &mountlist_mtx, "mountlist", MTX_DEF);
 
+EVENTHANDLER_LIST_DEFINE(vfs_mounted);
+EVENTHANDLER_LIST_DEFINE(vfs_unmounted);
+
 /*
  * Global opts, taken by all filesystems
  */
@@ -865,7 +869,7 @@ vfs_domount_first(
 	if (VFS_ROOT(mp, LK_EXCLUSIVE, &newdp))
 		panic("mount: lost mount");
 	VOP_UNLOCK(vp, 0);
-	EVENTHANDLER_INVOKE(vfs_mounted, mp, newdp, td);
+	EVENTHANDLER_DIRECT_INVOKE(vfs_mounted, mp, newdp, td);
 	VOP_UNLOCK(newdp, 0);
 	mountcheckdirs(vp, newdp);
 	vrele(newdp);
@@ -1401,7 +1405,7 @@ dounmount(struct mount *mp, int flags, struct thread *
 	mtx_lock(&mountlist_mtx);
 	TAILQ_REMOVE(&mountlist, mp, mnt_list);
 	mtx_unlock(&mountlist_mtx);
-	EVENTHANDLER_INVOKE(vfs_unmounted, mp, td);
+	EVENTHANDLER_DIRECT_INVOKE(vfs_unmounted, mp, td);
 	if (coveredvp != NULL) {
 		coveredvp->v_mountedhere = NULL;
 		VOP_UNLOCK(coveredvp, 0);