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ff9a28f xfs: Fix WARN_ON(delalloc) in xfs_vm_releasepage()
19cb7e3 xfs: xfs_iomap_prealloc_size() tracepoint
76a4202 xfs: add quota-driven speculative preallocation throttling
b136645 xfs: xfs_dquot prealloc throttling watermarks and low free space
4b6eae2e xfs: pass xfs_dquot to xfs_qm_adjust_dqlimits() instead of xfs_disk_dquot_t
c9bdbdc xfs: push rounddown_pow_of_two() to after prealloc throttle
3c58b5f xfs: reorganize xfs_iomap_prealloc_size to remove indentation
from 56cea2d088811b8cf7d2893e29bcf369a912de69 (commit)
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commit ff9a28f6c25d18a635abcab1f49db68108203dfb
Author: Jan Kara <jack@xxxxxxx>
Date: Thu Mar 14 14:30:54 2013 +0100
xfs: Fix WARN_ON(delalloc) in xfs_vm_releasepage()
When a dirty page is truncated from a file but reclaim gets to it before
truncate_inode_pages(), we hit WARN_ON(delalloc) in
xfs_vm_releasepage(). This is because reclaim tries to write the page,
xfs_vm_writepage() just bails out (leaving page clean) and thus reclaim
thinks it can continue and calls xfs_vm_releasepage() on page with dirty
buffers.
Fix the issue by redirtying the page in xfs_vm_writepage(). This makes
reclaim stop reclaiming the page and also logically it keeps page in a
more consistent state where page with dirty buffers has PageDirty set.
Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit 19cb7e3854c9afe2ee968cbdd92293ec09e43bf3
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Mon Mar 18 10:51:48 2013 -0400
xfs: xfs_iomap_prealloc_size() tracepoint
Add a tracepoint to provide some feedback on preallocation size
calculation.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit 76a4202a388690e664668c4f668ee12d709100b3
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Mon Mar 18 10:51:47 2013 -0400
xfs: add quota-driven speculative preallocation throttling
Introduce the need_throttle() and calc_throttle() functions to
independently check whether throttling is required for a particular
dquot and if so, calculate the associated throttling metrics based
on the state of the quota. We use the same general algorithm to
calculate the throttle shift as for global free space with the
exception of using three stages rather than five.
Update xfs_iomap_prealloc_size() to use the smallest available
prealloc size based on each of the constraints and apply the
maximum shift to obtain the throttled preallocation size.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit b136645116e5471cf0b037a1759dc83620236631
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Mon Mar 18 10:51:46 2013 -0400
xfs: xfs_dquot prealloc throttling watermarks and low free space
Enable tracking of high and low watermarks for preallocation
throttling of files under quota restrictions. These values are
calculated when the quota limit is read from disk or modified and
cached for later use by the throttling algorithm.
The high watermark specifies when preallocation is disabled, the
low watermark specifies when throttling is enabled and the low free
space data structure contains precalculated low free space limits
to serve as input to determine the level of throttling required.
Note that the low free space data structure is based on the
existing global low free space data structure with the exception of
using three stages (5%, 3% and 1%) rather than five to reduce the
impact of xfs_dquot memory overhead.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit 4b6eae2e6ac8a6671839ccaea1c2e3dd5684f5df
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Mon Mar 18 10:51:45 2013 -0400
xfs: pass xfs_dquot to xfs_qm_adjust_dqlimits() instead of xfs_disk_dquot_t
Modify xfs_qm_adjust_dqlimits() to take the xfs_dquot as a
parameter instead of just the xfs_disk_dquot_t so we can update
in-memory fields if necessary.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit c9bdbdc0741d90908f492415c890b630f43f17f8
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Mon Mar 18 10:51:44 2013 -0400
xfs: push rounddown_pow_of_two() to after prealloc throttle
The round down occurs towards the beginning of the function. Push
it down after throttling has occurred. This is to support adding
further transformations to 'alloc_blocks' that might not preserve
power-of-two alignment (and thus could lead to rounding down
multiple times).
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Ben Myers <bpm@xxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit 3c58b5f809eda8ae8d891b7a87d0a235ab0f9bf5
Author: Brian Foster <bfoster@xxxxxxxxxx>
Date: Mon Mar 18 10:51:43 2013 -0400
xfs: reorganize xfs_iomap_prealloc_size to remove indentation
The majority of xfs_iomap_prealloc_size() executes within the
check for lack of default I/O size. Reverse the logic to remove the
extra indentation.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Ben Myers <bpm@xxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
fs/xfs/xfs_aops.c | 12 ++--
fs/xfs/xfs_dquot.c | 48 ++++++++++++--
fs/xfs/xfs_dquot.h | 16 ++++-
fs/xfs/xfs_iomap.c | 161 ++++++++++++++++++++++++++++++++++++++---------
fs/xfs/xfs_qm.c | 2 +-
fs/xfs/xfs_qm.h | 2 +-
fs/xfs/xfs_qm_syscalls.c | 9 +--
fs/xfs/xfs_trace.h | 24 +++++++
fs/xfs/xfs_trans_dquot.c | 10 +--
9 files changed, 230 insertions(+), 54 deletions(-)
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