From: Dmitry Monakhov <dmonakhov@openvz.org>
To: linux-ext4@vger.kernel.org
Cc: tytso@mit.edu, jack@suse.cz, wenqing.lz@taobao.com,
Dmitry Monakhov <dmonakhov@openvz.org>
Subject: [PATCH 0/9] ext4: Bunch of DIO/AIO fixes V2
Date: Thu, 13 Sep 2012 19:01:05 +0400 [thread overview]
Message-ID: <1347548474-31897-1-git-send-email-dmonakhov@openvz.org> (raw)
There are number of races exist caused by lack of synchronization
between DIO workers in flight and truncate/fsync/punch_hole routines
This patch series try to optimize and fix existing DIO/AIO code.
This patch-set survives after all my tests(except fsdefrag)
I observe significant performance improvements for big SMP hosts
performind DIO for single file.
TOC:
# first one is simply a cleanup
ext4: ext4_inode_info diet
# Cleanup and bug fixes
ext4: completed_io locking cleanup V2
ext4: serialize dio nonlocked reads with defrag workers V3
ext4: punch_hole should wait for DIO writers
ext4: serialize unlocked dio reads with truncate
ext4: endless truncate due to nonlocked dio readers V2
ext4: serialize truncate with owerwrite DIO workers V2
# Nasty panch_hole regressions
ext4: fix ext_remove_space for punch_hole case
ext4: fix ext4_ext_remove_space tree traversal
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
ext4.h | 27 +++++++++++++++----
extents.c | 82 ++++++++++++++++++++++++++++++++--------------------------
fsync.c | 47 +++++++++++----------------------
indirect.c | 17 +++++++++---
inode.c | 49 ++++++++++++++--------------------
move_extent.c | 8 +++++
page-io.c | 76 ++++++++++++++---------------------------------------
super.c | 1
8 files changed, 148 insertions(+), 159 deletions(-)
next reply other threads:[~2012-09-13 15:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 15:01 Dmitry Monakhov [this message]
2012-09-13 15:01 ` [PATCH 1/9] ext4: ext4_inode_info diet Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 2/9] ext4: completed_io locking cleanup V2 Dmitry Monakhov
2012-09-20 18:56 ` Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 3/9] ext4: serialize dio nonlocked reads with defrag workers V3 Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 4/9] ext4: punch_hole should wait for DIO writers Dmitry Monakhov
2012-09-13 15:13 ` Lukáš Czerner
2012-09-13 15:01 ` [PATCH 5/9] ext4: serialize unlocked dio reads with truncate Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 6/9] ext4: endless truncate due to nonlocked dio readers V2 Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 7/9] ext4: serialize truncate with owerwrite DIO workers V2 Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 8/9] ext4: fix ext_remove_space for punch_hole case Dmitry Monakhov
2012-09-13 15:01 ` [PATCH 9/9] ext4: fix ext4_ext_remove_space tree traversal Dmitry Monakhov
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