[Cluster-devel] GFS2: Pull request (merge window)

[Bob Peterson <rpeterso@redhat.com>]

Hi Linus,

Please consider pulling the following changes for the GFS2 file system.

Bob Peterson

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The following changes since commit a3443cda5588985a2724d6d0f4a5f04e625be6eb:

  Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security (2016-10-04 14:48:27 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git tags/gfs2-4.11.fixes

for you to fetch changes up to c548a1c175608e268f6495f3f82461303584d1c9:

  gfs2: Make gfs2_write_full_page static (2017-02-03 08:23:47 -0500)

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We've got eight GFS2 patches for this merge window:

1. Andy Price submitted a patch to make gfs2_write_full_page a
   static function.
2. Dan Carpenter submitted a patch to fix a ERR_PTR thinko.

I've also got a few patches, three of which fix bugs related to
deleting very large files, which cause GFS2 to run out of
journal space:

3. The first one prevents GFS2 delete operation from requesting too
   much journal space.
4. The second one fixes a problem whereby GFS2 can hang because it
   wasn't taking journal space demand into its calculations.
5. The third one wakes up IO waiters when a flush is done to restart
   processes stuck waiting for journal space to become available.

The other three patches are a performance improvement related to
spin_lock contention between multiple writers:

6. The "tr_touched" variable was switched to a flag to be more atomic
   and eliminate the possibility of some races.
7. Function meta_lo_add was moved inline with its only caller to make
   the code more readable and efficient.
8. Contention on the gfs2_log_lock spinlock was greatly reduced by
   avoiding the lock altogether in cases where we don't really need
   it: buffers that already appear in the appropriate metadata list
   for the journal. Many thanks to Steve Whitehouse for the ideas and
   principles behind these patches.

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Andrew Price (1):
      gfs2: Make gfs2_write_full_page static

Bob Peterson (6):
      GFS2: Limit number of transaction blocks requested for truncates
      GFS2: Made logd daemon take into account log demand
      GFS2: Wake up io waiters whenever a flush is done
      GFS2: Switch tr_touched to flag in transaction
      GFS2: Inline function meta_lo_add
      GFS2: Reduce contention on gfs2_log_lock

Dan Carpenter (1):
      GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next

 fs/gfs2/aops.c       |  4 +--
 fs/gfs2/bmap.c       | 29 +++++++++++++++++--
 fs/gfs2/glock.c      | 12 ++++----
 fs/gfs2/incore.h     | 11 +++++--
 fs/gfs2/log.c        | 21 ++++++++++----
 fs/gfs2/meta_io.c    |  6 ++--
 fs/gfs2/ops_fstype.c |  1 +
 fs/gfs2/trans.c      | 81 ++++++++++++++++++++++++++++------------------------
 8 files changed, 105 insertions(+), 60 deletions(-)