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  1. 13 Sep, 2008 1 commit
    • Theodore Ts'o's avatar
      ext4: Renumber EXT4_IOC_MIGRATE · 8eea80d5
      Theodore Ts'o authored 
      Pick an ioctl number for EXT4_IOC_MIGRATE that won't conflict with
other ext4 ioctl's.  Since there haven't been any major userspace
users of this ioctl, we can afford to change this now, to avoid
potential problems later.

Also, reorder the ioctl numbers in ext4.h to avoid this sort of
mistake in the future.
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
      8eea80d5
  3. 09 Oct, 2008 1 commit
  5. 13 Sep, 2008 1 commit
  7. 08 Sep, 2008 1 commit
  9. 16 Sep, 2008 1 commit
    • Theodore Ts'o's avatar
      jbd2: clean up how the journal device name is printed · 05496769
      Theodore Ts'o authored 
      Calculate the journal device name once and stash it away in the
journal_s structure.  This avoids needing to call bdevname()
everywhere and reduces stack usage by not needing to allocate an
on-stack buffer.  In addition, we eliminate the '/' that can appear in
device names (e.g. "cciss/c0d0p9" --- see kernel bugzilla #11321) that
can cause problems when creating proc directory names, and include the
inode number to support ocfs2 which creates multiple journals with
different inode numbers.
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
      05496769
  11. 14 Sep, 2008 1 commit
  13. 08 Sep, 2008 1 commit
  15. 09 Oct, 2008 1 commit
    • Eric Sandeen's avatar
      ext4: Avoid printk floods in the face of directory corruption · 9d9f1775
      Eric Sandeen authored 
      Note: some people thinks this represents a security bug, since it
might make the system go away while it is printing a large number of
console messages, especially if a serial console is involved.  Hence,
it has been assigned CVE-2008-3528, but it requires that the attacker
either has physical access to your machine to insert a USB disk with a
corrupted filesystem image (at which point why not just hit the power
button), or is otherwise able to convince the system administrator to
mount an arbitrary filesystem image (at which point why not just
include a setuid shell or world-writable hard disk device file or some
such).  Me, I think they're just being silly. --tytso
Signed-off-by: default avatarEric Sandeen <sandeen@redhat.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
Cc: linux-ext4@vger.kernel.org
Cc: Eugene Teo <eugeneteo@kernel.sg>
      9d9f1775
  17. 13 Sep, 2008 2 commits
  19. 09 Sep, 2008 3 commits
  21. 09 Oct, 2008 2 commits
  23. 10 Oct, 2008 1 commit
  25. 09 Sep, 2008 1 commit
  27. 09 Oct, 2008 1 commit
    • Aneesh Kumar K.V's avatar
      ext4: Make sure all the block allocation paths reserve blocks · a30d542a
      Aneesh Kumar K.V authored 
      With delayed allocation we need to make sure block are reserved before
we attempt to allocate them. Otherwise we get block allocation failure
(ENOSPC) during writepages which cannot be handled. This would mean
silent data loss (We do a printk stating data will be lost). This patch
updates the DIO and fallocate code path to do block reservation before
block allocation. This is needed to make sure parallel DIO and fallocate
request doesn't take block out of delayed reserve space.

When free blocks count go below a threshold we switch to a slow patch
which looks at other CPU's accumulated percpu counter values.
Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
      a30d542a
  29. 20 Aug, 2008 1 commit
  31. 09 Sep, 2008 3 commits
  33. 09 Oct, 2008 13 commits
  35. 08 Oct, 2008 3 commits
  37. 07 Oct, 2008 2 commits
    • Daniele Lacamera's avatar
      tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd. · 9d2c27e1
      Daniele Lacamera authored 
      Because of rounding, in certain conditions, i.e. when in congestion
avoidance state rho is smaller than 1/128 of the current cwnd, TCP
Hybla congestion control starves and the cwnd is kept constant
forever.

This patch forces an increment by one segment after #send_cwnd calls
without increments(newreno behavior).
Signed-off-by: default avatarDaniele Lacamera <root@danielinux.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9d2c27e1
    • Herbert Xu's avatar
      net: Fix netdev_run_todo dead-lock · 58ec3b4d
      Herbert Xu authored 
      Benjamin Thery tracked down a bug that explains many instances
of the error

unregister_netdevice: waiting for %s to become free. Usage count = %d

It turns out that netdev_run_todo can dead-lock with itself if
a second instance of it is run in a thread that will then free
a reference to the device waited on by the first instance.

The problem is really quite silly.  We were trying to create
parallelism where none was required.  As netdev_run_todo always
follows a RTNL section, and that todo tasks can only be added
with the RTNL held, by definition you should only need to wait
for the very ones that you've added and be done with it.

There is no need for a second mutex or spinlock.

This is exactly what the following patch does.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      58ec3b4d
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