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
ru at FreeBSD.org
Wed Mar 1 23:30:51 PST 2006
Does this mean that when I "umount -f /mnt" where /mnt is NFS-mounted and
the exporting host is not responding (e.g., powered off), it will no longer
lock everything on "vfslock" or somesuch?
On Thu, Mar 02, 2006 at 05:50:23AM +0000, Jeff Roberson wrote:
> 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
> - 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
> - 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
ru at FreeBSD.org
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