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xfs: bump up nr_to_write in xfs_vm_writepage

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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>
This commit is contained in:
Eric Sandeen 2009-07-31 00:02:17 -05:00 committed by Felix Blyakher
parent 97db39a1f6
commit c8a4051c37
1 changed files with 8 additions and 0 deletions
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8
fs/xfs/linux-2.6/xfs_aops.c
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@ -1268,6 +1268,14 @@ xfs_vm_writepage(
if (!page_has_buffers(page)) if (!page_has_buffers(page))
create_empty_buffers(page, 1 << inode->i_blkbits, 0); 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 * Convert delayed allocate, unwritten or unmapped space
* to real space and flush out to disk. * to real space and flush out to disk.