1. 06 May, 2014 39 commits
  2. 05 May, 2014 1 commit
    • David Miller's avatar
      slab: Fix off by one in object max number tests. · 30321c7b
      David Miller authored
      If freelist_idx_t is a byte, SLAB_OBJ_MAX_NUM should be 255 not 256, and
      likewise if freelist_idx_t is a short, then it should be 65535 not
      65536.
      
      This was leading to all kinds of random crashes on sparc64 where
      PAGE_SIZE is 8192.  One problem shown was that if spinlock debugging was
      enabled, we'd get deadlocks in copy_pte_range() or do_wp_page() with the
      same cpu already holding a lock it shouldn't hold, or the lock belonging
      to a completely unrelated process.
      
      Fixes: a41adfaa
      
       ("slab: introduce byte sized index for the freelist of a slab")
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      30321c7b