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  1. 30 10月, 2014 1 次提交
  3. 24 6月, 2014 3 次提交
  5. 04 4月, 2014 4 次提交
  7. 11 2月, 2014 1 次提交
    • X
      ocfs2: check existence of old dentry in ocfs2_link() · 0e048316
      由 Xue jiufei 提交于 
      System call linkat first calls user_path_at(), check the existence of
old dentry, and then calls vfs_link()->ocfs2_link() to do the actual
work.  There may exist a race when Node A create a hard link for file
while node B rm it.

         Node A                          Node B
user_path_at()
  ->ocfs2_lookup(),
find old dentry exist
                                rm file, add inode say inodeA
                                to orphan_dir

call ocfs2_link(),create a
hard link for inodeA.

                                rm the link, add inodeA to orphan_dir
                                again

When orphan_scan work start, it calls ocfs2_queue_orphans() to do the
main work.  It first tranverses entrys in orphan_dir, linking all inodes
in this orphan_dir to a list look like this:

	inodeA->inodeB->...->inodeA

When tranvering this list, it will fall into loop, calling iput() again
and again.  And finally trigger BUG_ON(inode->i_state & I_CLEAR).
Signed-off-by: Njoyce <xuejiufei@huawei.com>
Reviewed-by: NMark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      0e048316
  9. 28 1月, 2014 1 次提交
  11. 26 1月, 2014 1 次提交
  13. 13 11月, 2013 1 次提交
  15. 04 7月, 2013 3 次提交
  17. 13 6月, 2013 2 次提交
  19. 13 2月, 2013 1 次提交
  21. 14 7月, 2012 2 次提交
  23. 30 5月, 2012 1 次提交
  25. 14 2月, 2012 1 次提交
  27. 04 1月, 2012 4 次提交
  29. 02 11月, 2011 3 次提交
  31. 26 7月, 2011 1 次提交
  33. 20 7月, 2011 1 次提交
  35. 26 5月, 2011 3 次提交
  37. 31 3月, 2011 1 次提交
  39. 23 2月, 2011 1 次提交
  41. 07 3月, 2011 1 次提交
    • T
      ocfs2: Remove EXIT from masklog. · c1e8d35e
      由 Tao Ma 提交于 
      mlog_exit is used to record the exit status of a function.
But because it is added in so many functions, if we enable it,
the system logs get filled up quickly and cause too much I/O.
So actually no one can open it for a production system or even
for a test.

This patch just try to remove it or change it. So:
1. if all the error paths already use mlog_errno, it is just removed.
   Otherwise, it will be replaced by mlog_errno.
2. if it is used to print some return value, it is replaced with
   mlog(0,...).
mlog_exit_ptr is changed to mlog(0.
All those mlog(0,...) will be replaced with trace events later.
Signed-off-by: NTao Ma <boyu.mt@taobao.com>
      c1e8d35e
  43. 21 2月, 2011 1 次提交
    • T
      ocfs2: Remove ENTRY from masklog. · ef6b689b
      由 Tao Ma 提交于 
      ENTRY is used to record the entry of a function.
But because it is added in so many functions, if we enable it,
the system logs get filled up quickly and cause too much I/O.
So actually no one can open it for a production system or even
for a test.

So for mlog_entry_void, we just remove it.
for mlog_entry(...), we replace it with mlog(0,...), and they
will be replace by trace event later.
Signed-off-by: NTao Ma <boyu.mt@taobao.com>
      ef6b689b
  45. 02 2月, 2011 1 次提交
    • E
      fs/vfs/security: pass last path component to LSM on inode creation · 2a7dba39
      由 Eric Paris 提交于 
      SELinux would like to implement a new labeling behavior of newly created
inodes.  We currently label new inodes based on the parent and the creating
process.  This new behavior would also take into account the name of the
new object when deciding the new label.  This is not the (supposed) full path,
just the last component of the path.

This is very useful because creating /etc/shadow is different than creating
/etc/passwd but the kernel hooks are unable to differentiate these
operations.  We currently require that userspace realize it is doing some
difficult operation like that and than userspace jumps through SELinux hoops
to get things set up correctly.  This patch does not implement new
behavior, that is obviously contained in a seperate SELinux patch, but it
does pass the needed name down to the correct LSM hook.  If no such name
exists it is fine to pass NULL.
Signed-off-by: NEric Paris <eparis@redhat.com>
      2a7dba39
  47. 13 1月, 2011 1 次提交