1. 12 6月, 2009 4 次提交
  2. 11 6月, 2009 29 次提交
  3. 10 6月, 2009 7 次提交
    • L
      tracing/events: convert block trace points to TRACE_EVENT(), fix !CONFIG_BLOCK · f1db457c
      Li Zefan 提交于
      Fix building failures when CONFIG_BLOCK == n.
      Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com>
      LKML-Reference: <4A2F1520.8020003@cn.fujitsu.com>
      Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      f1db457c
    • B
      spinlock: Add missing __raw_spin_lock_flags() stub for UP · 04dce7d9
      Benjamin Herrenschmidt 提交于
      This was only defined with CONFIG_DEBUG_SPINLOCK set, but some
      obscure arch/powerpc code wants it always.
      Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
      LKML-Reference: <new-submission>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      04dce7d9
    • L
      Make /dev/zero reads interruptible by signals · 2b838687
      Linus Torvalds 提交于
      This helps with bad latencies for large reads from /dev/zero, but might
      conceivably break some application that "knows" that a read of /dev/zero
      cannot return early.  So do this early in the merge window to give us
      maximal test coverage, even if the patch is totally trivial.
      
      Obviously, no well-behaved application should ever depend on the read
      being uninterruptible, but hey, bugs happen.
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2b838687
    • L
      Linux 2.6.30 · 07a2039b
      Linus Torvalds 提交于
      07a2039b
    • P
      char: mxser, fix ISA board lookup · 96050dfb
      Peter Botha 提交于
      There's a bug in the mxser kernel module that still appears in the
      2.6.29.4 kernel.
      
      mxser_get_ISA_conf takes a ioaddress as its first argument, by passing the
      not of the ioaddr, you're effectively passing 0 which means it won't be
      able to talk to an ISA card.  I have tested this, and removing the !
      fixes the problem.
      
      Cc: "Peter Botha" <peterb@goldcircle.co.za>
      Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
      Acked-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
      Cc: <stable@kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      96050dfb
    • J
      jbd: fix race in buffer processing in commit code · a61d90d7
      Jan Kara 提交于
      In commit code, we scan buffers attached to a transaction.  During this
      scan, we sometimes have to drop j_list_lock and then we recheck whether
      the journal buffer head didn't get freed by journal_try_to_free_buffers().
       But checking for buffer_jbd(bh) isn't enough because a new journal head
      could get attached to our buffer head.  So add a check whether the journal
      head remained the same and whether it's still at the same transaction and
      list.
      
      This is a nasty bug and can cause problems like memory corruption (use after
      free) or trigger various assertions in JBD code (observed).
      Signed-off-by: NJan Kara <jack@suse.cz>
      Cc: <stable@kernel.org>
      Cc: <linux-ext4@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a61d90d7
    • I
      autofs4: remove hashed check in validate_wait() · 463aea1a
      Ian Kent 提交于
      The recent ->lookup() deadlock correction required the directory inode
      mutex to be dropped while waiting for expire completion.  We were
      concerned about side effects from this change and one has been identified.
      
      I saw several error messages.
      
      They cause autofs to become quite confused and don't really point to the
      actual problem.
      
      Things like:
      
      handle_packet_missing_direct:1376: can't find map entry for (43,1827932)
      
      which is usually totally fatal (although in this case it wouldn't be
      except that I treat is as such because it normally is).
      
      do_mount_direct: direct trigger not valid or already mounted
      /test/nested/g3c/s1/ss1
      
      which is recoverable, however if this problem is at play it can cause
      autofs to become quite confused as to the dependencies in the mount tree
      because mount triggers end up mounted multiple times.  It's hard to
      accurately check for this over mounting case and automount shouldn't need
      to if the kernel module is doing its job.
      
      There was one other message, similar in consequence of this last one but I
      can't locate a log example just now.
      
      When checking if a mount has already completed prior to adding a new mount
      request to the wait queue we check if the dentry is hashed and, if so, if
      it is a mount point.  But, if a mount successfully completed while we
      slept on the wait queue mutex the dentry must exist for the mount to have
      completed so the test is not really needed.
      
      Mounts can also be done on top of a global root dentry, so for the above
      case, where a mount request completes and the wait queue entry has already
      been removed, the hashed test returning false can cause an incorrect
      callback to the daemon.  Also, d_mountpoint() is not sufficient to check
      if a mount has completed for the multi-mount case when we don't have a
      real mount at the base of the tree.
      Signed-off-by: NIan Kent <raven@themaw.net>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      463aea1a