Commit c8a4051c authored Jul 31, 2009 by Eric Sandeen Committed by Felix Blyakher Jul 31, 2009

xfs: bump up nr_to_write in xfs_vm_writepage



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.

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Cc: Chris Mason <chris.mason@oracle.com>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

parent 97db39a1

fs/xfs/linux-2.6/xfs_aops.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1268,6 +1268,14 @@ 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.