jbd: Provide function to check whether transaction will issue data barrier
authorJan Kara <jack@suse.cz>
Thu, 15 Apr 2010 20:16:24 +0000 (22:16 +0200)
committerJan Kara <jack@suse.cz>
Fri, 21 May 2010 17:30:40 +0000 (19:30 +0200)
Provide a function which returns whether a transaction with given tid
will send a barrier to the filesystem device. The function will be used
by ext3 to detect whether fsync needs to send a separate barrier or not.

Signed-off-by: Jan Kara <jack@suse.cz>

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