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[PATCH v4 0/6] speculative preallocation quota throttling

To: xfs@xxxxxxxxxxx
Subject: [PATCH v4 0/6] speculative preallocation quota throttling
From: Brian Foster <bfoster@xxxxxxxxxx>
Date: Wed, 20 Feb 2013 10:10:13 -0500
Delivered-to: xfs@xxxxxxxxxxx
Hi all,

Here is v4 of the speculative preallocation quota throttling set. Patch 3 of v3
is dropped due to a redundancy and a few changes are made to the threshold
management code (patch 4/6). The remaining patches are unchanged from v3.


- Drop patch 3/7 from v3 (xfs: cap prealloc size to free space before shift).
- Several updates to patch 4/6:
  - Rename xfs_dquot_init_prealloc() to xfs_dquot_set_prealloc_limits().
  - Unroll the prealloc threshold loop and remove the increment def.
  - Fix up some comments.
- Rebased on top of updated speculative preallocation algorithm.
- Fix up xfs_iomap_prealloc_size() rounding (patch 2).
- Add pre-calculated fields to xfs_dquot to support throttling.
- Move to logarithmic (shift) throttler and finer tuned trigger/throttle logic.

Brian Foster (6):
  xfs: reorganize xfs_iomap_prealloc_size to remove indentation
  xfs: push rounddown_pow_of_two() to after prealloc throttle
  xfs: pass xfs_dquot to xfs_qm_adjust_dqlimits() instead of
  xfs: xfs_dquot prealloc throttling watermarks and low free space
  xfs: add quota-driven speculative preallocation throttling
  xfs: xfs_iomap_prealloc_size() tracepoint

 fs/xfs/xfs_dquot.c       |   44 ++++++++++++-
 fs/xfs/xfs_dquot.h       |   14 ++++-
 fs/xfs/xfs_iomap.c       |  161 +++++++++++++++++++++++++++++++++++++---------
 fs/xfs/xfs_qm.c          |    2 +-
 fs/xfs/xfs_qm_syscalls.c |    1 +
 fs/xfs/xfs_trace.h       |   24 +++++++
 fs/xfs/xfs_trans_dquot.c |    2 +-
 7 files changed, 212 insertions(+), 36 deletions(-)


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