svn commit: r191814 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb kern

[Konstantin Belousov]

Author: kib
Date: Tue May  5 10:43:14 2009
New Revision: 191814
URL: http://svn.freebsd.org/changeset/base/191814

Log:
  MFC r191135:
  Export the number of times bufdaemon got help from the normal threads.

Modified:
  stable/7/sys/   (props changed)
  stable/7/sys/contrib/pf/   (props changed)
  stable/7/sys/dev/ath/ath_hal/   (props changed)
  stable/7/sys/dev/cxgb/   (props changed)
  stable/7/sys/kern/vfs_bio.c

Modified: stable/7/sys/kern/vfs_bio.c
==============================================================================
--- stable/7/sys/kern/vfs_bio.c Tue May  5 10:34:43 2009        (r191813)
+++ stable/7/sys/kern/vfs_bio.c Tue May  5 10:43:14 2009        (r191814)
@@ -191,6 +191,9 @@ SYSCTL_INT(_vfs, OID_AUTO, getnewbufrest
 static int flushbufqtarget = -1;
 SYSCTL_INT(_vfs, OID_AUTO, flushbufqtarget, CTLFLAG_RW, &flushbufqtarget, 0,
     "Amount of work to do in flushbufqueues when helping bufdaemon");
+static long notbufdflashes;
+SYSCTL_LONG(_vfs, OID_AUTO, notbufdflashes, CTLFLAG_RD, &notbufdflashes, 0,
+    "Number of dirty buffer flushes done by the bufdaemon helpers");
 
 /*
  * Wakeup point for bufdaemon, as well as indicator of whether it is already
@@ -2280,6 +2283,7 @@ flushbufqueues(struct vnode *lvp, int qu
                        else {
                                bremfree(bp);
                                bwrite(bp);
+                               notbufdflashes++;
                        }
                        vn_finished_write(mp);
                        VOP_UNLOCK(vp, 0, td);
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