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Date: Tue, 27 Aug 2019 10:05:49 +0800 From: Joseph Qi <joseph.qi@...ux.alibaba.com> To: Theodore Ts'o <tytso@....edu>, Andreas Dilger <adilger@...ger.ca>, Jan Kara <jack@...e.cz> Cc: linux-ext4@...r.kernel.org, Dave Chinner <david@...morbit.com> Subject: [PATCH 0/3] Revert parallel dio reads 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
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