.

wcfs/__init__.py

@@ -185,20 +185,26 @@ def _pinner(wconn, ctx):
             return  # XXX ok? (EOF - when wcfs closes wlink)
 
         # we received request to pin/unpin file block. perform it
+        trace('lock _filemu ...')
         with wconn._filemu:
+            trace('_filemu locked')
             f = wconn._filetab.get(req.foid)
             if f is None:
                 1/0     # XXX we are not watching the file - why wcfs sent us this update?
 
+            trace(f)
 
             # XXX relock wconn -> f ?
 
             for mmap in f.mmaps:    # XXX use ↑blk_start for binary search
+                trace('\t%s' % mmap)
                 if not (mmap.blk_start <= req.blk < mmap.blk_stop):
                     continue    # blk ∉ mmap
 
+                trace('\tremmapblk %d @%s' % (req.blk, h(req.at)))
                 # FIXME check if virtmem did not mapped RW page into this block already
                 mmap._remmapblk(req.blk, req.at)
+                trace('\t-> remmaped')
 
             # update f.pinned
             if req.at is None: