svn commit: r292299 - head/sys/kern

[Adrian Chadd]

Author: adrian
Date: Wed Dec 16 00:13:16 2015
New Revision: 292299
URL: https://svnweb.freebsd.org/changeset/base/292299

Log:
  Don't call wakeup if we're just returning reserved space; just
  return the reservation and wait for more space to appear.
  
  Submitted by:	jeff
  Reviewed by:	kib

Modified:
  head/sys/kern/vfs_bio.c

Modified: head/sys/kern/vfs_bio.c
==============================================================================
--- head/sys/kern/vfs_bio.c	Wed Dec 16 00:09:57 2015	(r292298)
+++ head/sys/kern/vfs_bio.c	Wed Dec 16 00:13:16 2015	(r292299)
@@ -2909,7 +2909,7 @@ getnewbuf(struct vnode *vp, int slpflag,
 	} while(buf_scan(false) == 0);
 
 	if (reserved)
-		bufspace_release(maxsize);
+		atomic_subtract_long(&bufspace, maxsize);
 	if (bp != NULL) {
 		bp->b_flags |= B_INVAL;
 		brelse(bp);