[PATCH 3/4] writeback: pay attention to wbc->nr_to_write in write_cache_pages

[tytso at mit.edu]

On Sun, Apr 25, 2010 at 10:43:02PM -0400, tytso at MIT.EDU wrote:
> Have you tested with multiple files that are subject to writeout at
> the same time?  After all, if your I/O allocator does a great job of
> keeping the files contiguous in chunks larger tham 4MB, then if you
> have two or more files that need to be written out, the page allocator
> will round robin between the two files in 4MB chunks, and that might
> not be considered an ideal I/O pattern.

Argh.  Sorry for not proof reading better before hitting the send
key....

s/tham/than/
s/page allocator/writeback code/

						- Ted