BSD Commit Log Search

   Put the bowels of the various VOP_PRINT routines under
   defined(DEBUG) || defined(DIAGNOSTIC) || defined(VFSLCKDEBUG)
   as they won't be used otherwise.

   Shaves a few bytes off installation kernels.

   ok kn@ semarie@

   Delete obsolete /* ARGSUSED */ lint comments.

   ok miod@ millert@

   Remove unused VOP_POLL().

   OK mpi@

   Let poll(2) register EVFILT_EXCEPT filter with dead vnodes

   This enables the system deliver POLLHUP when pollfd.events == 0.

   Add vnode parameter to VOP_STRATEGY()

   Pass the device vnode as a parameter to VOP_STRATEGY() to allow calling
   the correct vop_strategy callback. Now the vnode is also available
   in the callback.

   OK mpi@

   vnode: deadfs: do not call v_op->vop_lock directly, use VOP_LOCK() wrapper

   ok mpi@ visa@ (as part of larger diff)

   vnode: remove vop_generic_{,is,un}lock stub functions

   These functions are only stubs (returning 0). Replace them with nullop
   function (same behaviour). There is no intented behaviour changes.

   While here, reorder some vop_islocked member in structs to be next
   others vop_{,un}lock members.

   ok visa@

   vfs: merge *_badop to vop_generic_badop

   It replaces spec_badop, fifo_badop, dead_badop and mfs_badop, which
   are only calls to panic(9), to one unique function vop_generic_badop().

   No intented behaviour changes (outside the panic message which isn't
   the same).

   ok mpi@

   Introduce a global vnode_mtx and use it to make vn_lock() safe to be called
   without the KERNEL_LOCK.
   This moves VXLOCK and VXWANT to a mutex protected v_lflag field and also
   v_lockcount is protected by this mutex.

   The vn_lock() dance is overly complex and all of this should probably replaced
   by a proper lock on the vnode but such a diff is a lot more complex. This
   is an intermediate step so that at least some calls can be modified to grab
   the KERNEL_LOCK later or not at all.

   OK mpi@

   make some `struct vops' members explicitly NULL instead of implicitly NULL

   ok mpi@

   Implement a simple kqfilter for deadfs matching its poll handler.

   ok visa@, millert@

   struct vops is not modified during runtime so use const which moves each
   into read-only data segment.
   OK deraadt@ tedu@

   Convert infinite sleeps to tsleep_nsec(9).

   ok jca@

   Unlock the vnode in vop_inactive of deadfs. The unlock operation is
   a no-op at the moment, but future work will introduce an actual lock
   that has to be released.

   OK mpi@ anton@

   Remove some includes include-what-you-use claims don't
   have any direct symbols used.  Tested for indirect use by compiling
   amd64/i386/sparc64 kernels.

   ok tedu@ deraadt@

   primary change: move uvm_vnode out of vnode, keeping only a pointer.
   objective: vnode.h doesn't include uvm_extern.h anymore.
   followup changes: include uvm_extern.h or lock.h where necessary.
   ok and help from deraadt

   remove uneeded proc.h includes
   ok mpi@ kspillner@

   Every single vop_default is set to eopnotsupp, so retire it
   and return EOPNOTSUPP directly from the VOP_* functions.

   Filesystems should, at some point fill in every function
   in the vop_default struct so we can get rid of the 'if'
   statements in VOP_*.

   Bring back the "End the VOP experiment." diff, naddy's issues where
   unrelated, and his alpha is much happier now.

   OK deraadt@

   Backout the VOP diff until the issues naddy was seeing on alpha (gcc3)
   have been resolved.

   End the VOP experiment. Instead of the ridicolusly complicated operation
   vector setup that has questionable features (that have, as far as I can
   tell never been used in practice, atleast not in OpenBSD), remove all
   the gunk and favor a simple struct full of function pointers that get
   set directly by each of the filesystems.

   Removes gobs of ugly code and makes things simpler by a magnitude.

   The only downside of this is that we loose the vnoperate feature so
   the spec/fifo operations of the filesystems need to be kept in sync
   with specfs and fifofs, this is no big deal as the API it self is pretty
   static.

   Many thanks to armani@ who pulled an earlier version of this diff to
   current after c2k10 and Gabriel Kihlman on tech@ for testing.

   Liked by many. "come on, find your balls" deraadt@.

   - remove super-obvious comments from $fs_vnodeop_entries[]

   prodded by and ok thib@
   agreed by art@ and blambert@

   retire vn_default_error() and replace all instances
   with eopnotsupp() instead;

   ok blambert@

   remove useless defines for the vnode operations, and instead
   init the op array functions with whatever the define was set
   too.

   ok dlg@

   fifofs, deadfs and specfs all have the same "trivial lookup routine that
   always fails". Introduce vop_generic_lookup(), which is a trivial lookup
   routine that always fails and use that instead, zap the redundant copies.

   ok toby@, tedu@, art@

   pedro ok'd this ~3500 line diff which removes the vop argument
   "ap = v" comments in under 8 seconds, so it must be ok.  and it compiles
   too.

   ansify and deregister, no binary change, okay mickey@ bluhm@

   Remove the v_interlock simplelock from the vnode structure.
   Zap all calls to simple_lock/unlock() on it (those calls are
   #defined away though). Remove the LK_INTERLOCK from the calls
   to vn_lock() and cleanup the filesystems wich implement VOP_LOCK().
   (by remvoing the v_interlock from there calls to lockmgr()).

   ok pedro@, art@, tedu@

   Merge of current from two weeks agointo the SMP branch

   Replace select backends with poll backends.  selscan() and pollscan()
   now call the poll backend.  With this change we implement greater
   poll(2) functionality instead of emulating it via the select backend.
   Adapted from NetBSD and including some changes from FreeBSD.
   Tested by many, deraadt@ OK