Correct accuracy of the barrier writes accounting.

Discussed with: mckusick MFC after: 1 week Sponsored by: The FreeBSD Foundation
2018-12-02 12:53:39 +00:00 · 2018-12-02 12:53:39 +00:00 · 966a7e1173
commit 966a7e1173
parent 4dd1500004
1 changed files with 1 additions and 1 deletions
--- a/sys/kern/vfs_bio.c
+++ b/sys/kern/vfs_bio.c
@ -2231,7 +2231,7 @@ bufwrite(struct buf *bp)
 	}

 	if (bp->b_flags & B_BARRIER)
-		barrierwrites++;
+		atomic_add_long(&barrierwrites, 1);

 	oldflags = bp->b_flags;