From: Joseph Qi <joseph.qi@linux.alibaba.com>
To: Theodore Ts'o <tytso@mit.edu>, Andreas Dilger <adilger@dilger.ca>,
Jan Kara <jack@suse.cz>
Cc: linux-ext4@vger.kernel.org, Dave Chinner <david@fromorbit.com>
Subject: [PATCH 0/3] Revert parallel dio reads
Date: Tue, 27 Aug 2019 10:05:49 +0800 [thread overview]
Message-ID: <1566871552-60946-1-git-send-email-joseph.qi@linux.alibaba.com> (raw)
This patch set is trying to revert parallel dio reads feature at present
since it causes significant performance regression in mixed random
read/write scenario.
Joseph Qi (3):
Revert "ext4: remove EXT4_STATE_DIOREAD_LOCK flag"
Revert "ext4: fix off-by-one error when writing back pages before dio
read"
Revert "ext4: Allow parallel DIO reads"
fs/ext4/ext4.h | 17 +++++++++++++++++
fs/ext4/extents.c | 19 ++++++++++++++-----
fs/ext4/inode.c | 47 +++++++++++++++++++++++++++++++----------------
fs/ext4/ioctl.c | 4 ++++
fs/ext4/move_extent.c | 4 ++++
fs/ext4/super.c | 12 +++++++-----
6 files changed, 77 insertions(+), 26 deletions(-)
--
1.8.3.1
next reply other threads:[~2019-08-27 2:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-27 2:05 Joseph Qi [this message]
2019-08-27 2:05 ` [PATCH 1/3] Revert "ext4: remove EXT4_STATE_DIOREAD_LOCK flag" Joseph Qi
2019-08-27 2:05 ` [PATCH 2/3] Revert "ext4: fix off-by-one error when writing back pages before dio read" Joseph Qi
2019-08-27 2:05 ` [PATCH 3/3] Revert "ext4: Allow parallel DIO reads" Joseph Qi
2019-08-27 11:51 ` [PATCH 0/3] Revert parallel dio reads Dave Chinner
2019-08-29 10:58 ` Jan Kara
2019-08-29 19:06 ` Andreas Dilger
2019-08-30 15:35 ` Jan Kara
2019-09-10 14:10 ` Ritesh Harjani
2019-09-10 21:57 ` Jan Kara
2019-09-11 14:20 ` Ritesh Harjani
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