tree e3b176e8d592e30aa9bd981ba58e1d625fc16f27
parent d622b89a2f58613a9c1407b22b02aecdd2187a7c
author Tao Ma <tao.ma@oracle.com> 1265015133 +0800
committer Joel Becker <joel.becker@oracle.com> 1265163335 -0800

ocfs2: Only bug out when page size is larger than cluster size.

In CoW, we have to make sure that the page is already written
out to the disk. So we have a BUG_ON(PageDirty(page)).

In ppc platform we have pagesize=64K, so if the cs=4K, if the
file have fragmented clusters, we will map the page many times.
See this file as an example.
Tree Depth: 0   Count: 19   Next Free Rec: 14
	## Offset        Clusters       Block#          Flags
	0  0             4              2164864         0x2 Refcounted
	1  4             2              9302792         0x2 Refcounted
...

We have to replace the extent recs one by one, so the page with index 0
will be mapped and dirtied twice.

I'd like to leave the BUG_ON there while adding a check so that in
case we meet with an error in other platforms, we can find it easily.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>