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authorEric Sandeen <sandeen@sandeen.net>2009-07-31 09:02:17 +0400
committerFelix Blyakher <felixb@sgi.com>2009-07-31 09:57:11 +0400
commitc8a4051c3731b6db224482218cfd535ab9393ff8 (patch)
tree78b326f229fd670e37e1eb08f89bede4260aec95
parent97db39a1f6f69e906e98118392400de5217aa33a (diff)
downloadlinux-c8a4051c3731b6db224482218cfd535ab9393ff8.tar.xz
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>
-rw-r--r--fs/xfs/linux-2.6/xfs_aops.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 7ec89fc05b2b..aecf2519db76 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -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.