cvs commit: src/sys/fs/unionfs union_subr.c union_vnops.c

[Brian Feldman]

green       2004/01/16 08:31:01 PST

  FreeBSD src repository

  Modified files:
    sys/fs/unionfs       union_subr.c union_vnops.c 
  Log:
  Fix an upper-vnode leak created in revision 1.52.  When an upper-layer
  file has been removed, it should be purged from the cache, but it need
  not be removed from the directory stack causing corruption; instead,
  it will simply be removed once the last references and holds on it
  are dropped at the end of the unlink/rmdir system calls, and the
  normal !UN_CACHED VOP_INACTIVE() handler for unionfs finishes it off.
  
  This is easily reproduced by repeated "echo >file; rm file" on a
  unionfs mount.  Strangely, "echo -n >file; rm file" didn't make
  it happen.
  
  Revision  Changes    Path
  1.76      +11 -16    src/sys/fs/unionfs/union_subr.c
  1.105     +2 -3      src/sys/fs/unionfs/union_vnops.c