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***** SUSPECTED SPAM ***** [RFD 08/17] xfs: inode chunk freeing in the

To: xfs@xxxxxxxxxxx
Subject: ***** SUSPECTED SPAM ***** [RFD 08/17] xfs: inode chunk freeing in the background
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Mon, 12 Aug 2013 23:19:58 +1000
Delivered-to: xfs@xxxxxxxxxxx
Importance: Low
In-reply-to: <1376313607-28133-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1376313607-28133-1-git-send-email-david@xxxxxxxxxxxxx>
From: Dave Chinner <dchinner@xxxxxxxxxx>

Now that inode chunk freeing has been separated from freeing indivdiual inodes
we no longer need to do it in-line with the high level unlink inode operation.
As such, we can move inode chunk freeing into a workqueue and trigger it to run
asynchronously.

Moving the chunk freeing to the background allows us to delay the decision to
free the inode chunk and further optimise inode chunk freeing according to the
current workload.

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
 fs/xfs/xfs_ag.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 1a97646..b34f641 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -253,6 +253,7 @@ typedef struct xfs_perag {
        xfs_agino_t     pagi_count;     /* number of allocated inodes */
 
        int             pagi_chunk_alloc_rate;
+       int             pagi_chunk_free_rate;
 
        /*
         * Inode allocation search lookup optimisation.
-- 
1.8.3.2

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