From: Dmitry Monakhov <dmonakhov@openvz.org>
To: ext4 development <linux-ext4@vger.kernel.org>, Jan Kara <jack@suse.cz>
Subject: per inode fsync optimization question
Date: Wed, 03 Apr 2013 18:21:46 +0400 [thread overview]
Message-ID: <8738v7r8xx.fsf@openvz.org> (raw)
inode store i_sync_tid and i_datasync_tid in order to optimize journal
flushes and wait for commits only when necessary, but
fields are declared as tid_t(not atomic_t as it done in ext3) so we
have not synchronization between readers and writers, so gcc and cpu
is allowed to perform prefetch, cache and other stuff.
Looks like a bug, right?
next reply other threads:[~2013-04-03 14:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-03 14:21 Dmitry Monakhov [this message]
2013-04-03 14:50 ` per inode fsync optimization question Jan Kara
2013-04-03 15:09 ` Dmitry Monakhov
2013-04-03 15:15 ` Jan Kara
2013-04-03 15:41 ` Dmitry Monakhov
2013-04-03 16:03 ` Jan Kara
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