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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Mon, 7 Sep 2009 12:39:54 +0000 (UTC)
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Subject: svn commit: r196922 - in stable/7/sys: . contrib/pf net ufs/ffs
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Author: kib
Date: Mon Sep  7 12:39:54 2009
New Revision: 196922
URL: http://svn.freebsd.org/changeset/base/196922

Log:
  MFC r196206.
  
  Take the number of allocated freeblks into consideration for
  softdep_slowdown().

Modified:
  stable/7/sys/   (props changed)
  stable/7/sys/contrib/pf/   (props changed)
  stable/7/sys/net/   (props changed)
  stable/7/sys/ufs/ffs/ffs_softdep.c

Modified: stable/7/sys/ufs/ffs/ffs_softdep.c
==============================================================================
--- stable/7/sys/ufs/ffs/ffs_softdep.c	Mon Sep  7 12:10:41 2009	(r196921)
+++ stable/7/sys/ufs/ffs/ffs_softdep.c	Mon Sep  7 12:39:54 2009	(r196922)
@@ -671,6 +671,8 @@ static int req_clear_inodedeps;	/* synce
 static int req_clear_remove;	/* syncer process flush some freeblks */
 #define FLUSH_REMOVE		2
 #define FLUSH_REMOVE_WAIT	3
+static long num_freeblkdep;	/* number of freeblks workitems allocated */
+
 /*
  * runtime statistics
  */
@@ -2230,6 +2232,9 @@ softdep_setup_freeblocks(ip, length, fla
 	freeblks->fb_uid = ip->i_uid;
 	freeblks->fb_previousinum = ip->i_number;
 	freeblks->fb_devvp = ip->i_devvp;
+	ACQUIRE_LOCK(&lk);
+	num_freeblkdep++;
+	FREE_LOCK(&lk);
 	extblocks = 0;
 	if (fs->fs_magic == FS_UFS2_MAGIC)
 		extblocks = btodb(fragroundup(fs, ip->i_din2->di_extsize));
@@ -2821,6 +2826,7 @@ handle_workitem_freeblocks(freeblks, fla
 
 	ACQUIRE_LOCK(&lk);
 	WORKITEM_FREE(freeblks, D_FREEBLKS);
+	num_freeblkdep--;
 	FREE_LOCK(&lk);
 }
 
@@ -5748,7 +5754,8 @@ softdep_slowdown(vp)
 	max_softdeps_hard = max_softdeps * 11 / 10;
 	if (num_dirrem < max_softdeps_hard / 2 &&
 	    num_inodedep < max_softdeps_hard &&
-	    VFSTOUFS(vp->v_mount)->um_numindirdeps < maxindirdeps) {
+	    VFSTOUFS(vp->v_mount)->um_numindirdeps < maxindirdeps &&
+	    num_freeblkdep < max_softdeps_hard) {
 		FREE_LOCK(&lk);
   		return (0);
 	}