linux-ext4 - [PATCH 0/2] Fix sending of a barrier and transaction waiting in ext4_sync

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Message-Id: <1305628095-27843-1-git-send-email-jack@suse.cz>
Date:	Tue, 17 May 2011 12:28:13 +0200
From:	Jan Kara <jack@...e.cz>
To:	tytso@....edu
Cc:	Edward Goggin <egoggin@...are.com>, linux-ext4@...r.kernel.org
Subject: [PATCH 0/2] Fix sending of a barrier and transaction waiting in ext4_sync_file()

  Hi Ted,

  the two patches below fix ext4_sync_file() to wait for a transaction commit
properly (return value of jbd2_log_start_commit() is not exactly what
ext4_sync_file() thinks it is). It also optimizes / fixes sending of a barrier
in some cases (e.g. in ordered mode with external journal we cannot really
depend on transaction commit to issue a barrier to fs device because we don't
seem to add inode to a transaction for overwrites).

I already fixed ext3 in this regard some time ago but didn't get to porting the
patches to ext4. 

									Honza
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