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[PATCH 4/4] xfs: remove nr_to_write writeback windup.

To: linux-fsdevel@xxxxxxxxxxxxxxx
Subject: [PATCH 4/4] xfs: remove nr_to_write writeback windup.
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Tue, 20 Apr 2010 12:41:54 +1000
Cc: linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <1271731314-5893-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1271731314-5893-1-git-send-email-david@xxxxxxxxxxxxx>
From: Dave Chinner <dchinner@xxxxxxxxxx>

Now that the background flush code has been fixed, we shouldn't need to
silently multiply the wbc->nr_to_write to get good writeback. Remove
that code.

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
 fs/xfs/linux-2.6/xfs_aops.c |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 9962850..2b2225d 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -1336,14 +1336,6 @@ xfs_vm_writepage(
        if (!page_has_buffers(page))
                create_empty_buffers(page, 1 << inode->i_blkbits, 0);
 
-
-       /*
-        *  VM calculation for nr_to_write seems off.  Bump it way
-        *  up, this gets simple streaming writes zippy again.
-        *  To be reviewed again after Jens' writeback changes.
-        */
-       wbc->nr_to_write *= 4;
-
        /*
         * Convert delayed allocate, unwritten or unmapped space
         * to real space and flush out to disk.
-- 
1.6.5

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