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SubjectRe: bcache: Fix a writeback performance regression

Vanilla 3.10.7 + bcache: Fix a writeback performance regression

http://pastebin.com/raw.php?i=LXZk4cMH

Stefan

Am 16.08.2013 12:11, schrieb Stefan Priebe - Profihost AG:
> Hi,
>
> bcache: Fix a writeback performance regression
>
> this one results in 3.10 into hung tasks in bcache_writeback read_dirty.
>
> Stefan
> Am 15.08.2013 08:43, schrieb Stefan Priebe - Profihost AG:
>> Am 15.08.2013 00:59, schrieb Kent Overstreet:
>>> Jens, here's the latest bcache fixes. Some urgent stuff in here:
>>>
>>>
>>> The following changes since commit 79826c35eb99cd3c0873b8396f45fa26c87fb0b0:
>>>
>>> bcache: Allocation kthread fixes (2013-07-12 00:22:49 -0700)
>>>
>>> are available in the git repository at:
>>>
>>> git://evilpiepirate.org/~kent/linux-bcache.git bcache-for-3.11
>>>
>>> for you to fetch changes up to 0434a516e99ee51ac2d0dfa71b2f56c89ac5db05:
>>>
>>> bcache: Fix a flush/fua performance bug (2013-08-14 15:44:51 -0700)
>>>
>>> ----------------------------------------------------------------
>>> Gabriel de Perthuis (1):
>>> bcache: Strip endline when writing the label through sysfs
>>>
>>> Geert Uytterhoeven (1):
>>> bcache: Correct printf()-style format length modifier
>>>
>>> Kent Overstreet (4):
>>> bcache: Fix a dumb journal discard bug
>>> bcache: Fix for when no journal entries are found
>>> bcache: Fix a writeback performance regression
>>> bcache: Fix a flush/fua performance bug
>>>
>>> drivers/md/bcache/bcache.h | 7 +++----
>>> drivers/md/bcache/btree.c | 2 +-
>>> drivers/md/bcache/journal.c | 33 ++++++++++++++++++++-------------
>>> drivers/md/bcache/sysfs.c | 9 +++++++--
>>> drivers/md/bcache/util.c | 11 ++++++++++-
>>> drivers/md/bcache/util.h | 12 +++++++++---
>>> drivers/md/bcache/writeback.c | 37 ++++++++++++++++++-------------------
>>> 7 files changed, 68 insertions(+), 43 deletions(-)
>>> --
>>
>> As 3.10 is long term stable release. You might need CC the stable list
>> for patches which have to go to 3.10 as well.
>>
>> At least this one should go to 3.10:
>>> Gabriel de Perthuis (1):
>>> bcache: Strip endline when writing the label through sysfs
>>
>> Thanks!
>>
>> Greets,
>> Stefan
>>


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