From owner-cvs-src@FreeBSD.ORG Thu Mar 2 05:50:24 2006 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D842116A422; Thu, 2 Mar 2006 05:50:24 +0000 (GMT) (envelope-from jeff@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1E5B743D48; Thu, 2 Mar 2006 05:50:24 +0000 (GMT) (envelope-from jeff@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id k225oNub007233; Thu, 2 Mar 2006 05:50:24 GMT (envelope-from jeff@repoman.freebsd.org) Received: (from jeff@localhost) by repoman.freebsd.org (8.13.1/8.13.1/Submit) id k225oN2E007232; Thu, 2 Mar 2006 05:50:23 GMT (envelope-from jeff) Message-Id: <200603020550.k225oN2E007232@repoman.freebsd.org> From: Jeff Roberson Date: Thu, 2 Mar 2006 05:50:23 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Cc: Subject: cvs commit: src/sys/sys mount.h vnode.h src/sys/kern vfs_subr.c src/sys/ufs/ffs ffs_alloc.c ffs_extern.h ffs_snapshot.c ffs_softdep.c softdep.h src/sys/ufs/ufs ufsmount.h X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Mar 2006 05:50:25 -0000 jeff 2006-03-02 05:50:23 UTC FreeBSD src repository Modified files: sys/sys mount.h vnode.h sys/kern vfs_subr.c sys/ufs/ffs ffs_alloc.c ffs_extern.h ffs_snapshot.c ffs_softdep.c softdep.h sys/ufs/ufs ufsmount.h Log: - Move softdep from using a global worklist to per-mount worklists. This has many positive effects including improved smp locking, reducing interdependencies between mounts that can lead to deadlocks, etc. - Add the softdep worklist and various counters to the ufsmnt structure. - Add a mount pointer to the workitem and remove mount pointers from the various structures derived from the workitem as they are now redundant. - Remove the poor-man's semaphore protecting softdep_process_worklist and softdep_flushworklist. Several threads may now process the list simultaneously. - Add softdep_waitidle() to block the thread until all pending dependencies being operated on by other threads have been flushed. - Use softdep_waitidle() in unmount and snapshots to block either operation until the fs is stable. - Remove softdep worklist processing from the syncer and move it into the softdep_flush() thread. This thread processes all softdep mounts once each second and when it is called via the new softdep_speedup() when there is a resource shortage. This removes the softdep hook from the kernel and various hacks in header files to support it. Reviewed by/Discussed with: tegge, truckman, mckusick Tested by: kris Revision Changes Path 1.661 +0 -10 src/sys/kern/vfs_subr.c 1.206 +0 -4 src/sys/sys/mount.h 1.314 +0 -1 src/sys/sys/vnode.h 1.139 +3 -3 src/sys/ufs/ffs/ffs_alloc.c 1.70 +4 -5 src/sys/ufs/ffs/ffs_extern.h 1.113 +7 -0 src/sys/ufs/ffs/ffs_snapshot.c 1.189 +313 -254 src/sys/ufs/ffs/ffs_softdep.c 1.19 +1 -6 src/sys/ufs/ffs/softdep.h 1.35 +8 -0 src/sys/ufs/ufs/ufsmount.h