On Fri, 22 Dec 2006 11:00:04 +0100
Martin Michlmayr <[EMAIL PROTECTED]> wrote:

> > -   if (TestClearPageDirty(page) && account_size)
> > +   if (TestClearPageDirty(page) && account_size) {
> > +           dec_zone_page_state(page, NR_FILE_DIRTY);
> >             task_io_account_cancelled_write(account_size);
> > +   }
> 
> This hunk (on top of git from about 2 days ago and your latest patch)
> results in the installer hanging right at the start. 

You'll need this also:

From: Andrew Morton <[EMAIL PROTECTED]>

Only (un)account for IO and page-dirtying for devices which have real backing
store (ie: not tmpfs or ramdisks).

Cc: "David S. Miller" <[EMAIL PROTECTED]>
Cc: Linus Torvalds <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---

 mm/truncate.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN mm/truncate.c~truncate-dirty-memory-accounting-fix mm/truncate.c
--- a/mm/truncate.c~truncate-dirty-memory-accounting-fix
+++ a/mm/truncate.c
@@ -60,7 +60,8 @@ void cancel_dirty_page(struct page *page
                WARN_ON(++warncount < 5);
        }
                
-       if (TestClearPageDirty(page) && account_size) {
+       if (TestClearPageDirty(page) && account_size &&
+                       mapping_cap_account_dirty(page->mapping)) {
                dec_zone_page_state(page, NR_FILE_DIRTY);
                task_io_account_cancelled_write(account_size);
        }
_

-
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