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[PATCH 037/102] xfs: do exact log space wakeups in xlog_ungrant_log_spac

To: xfs@xxxxxxxxxxx
Subject: [PATCH 037/102] xfs: do exact log space wakeups in xlog_ungrant_log_space
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 23 Aug 2012 15:01:55 +1000
In-reply-to: <1345698180-13612-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1345698180-13612-1-git-send-email-david@xxxxxxxxxxxxx>
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>

Upstream commit: 3af1de753b3caf9fa3762b4b1b85d833c121847e

The only reason that xfs_log_space_wake had to do opportunistic wakeups
was that the old xfs_log_move_tail calling convention didn't allow for
exact wakeups when not updating the log tail LSN.  Since this issue has
been fixed we can do exact wakeups now.

Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
 fs/xfs/xfs_log.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 6907c82..ccb6199 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -2796,7 +2796,7 @@ xlog_ungrant_log_space(xlog_t          *log,
        trace_xfs_log_ungrant_exit(log, ticket);
-       xfs_log_space_wake(log->l_mp, true);
+       xfs_log_space_wake(log->l_mp, false);

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