xfs: remove nr_to_write writeback windup.
Dave Chinner [Wed, 9 Jun 2010 00:37:19 +0000 (10:37 +1000)]
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@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/xfs/linux-2.6/xfs_aops.c

index a0fa3bf..34640d6 100644 (file)
@@ -1381,14 +1381,6 @@ 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.