In message <[EMAIL PROTECTED]>, Hugh Dickins writes:
> On Tue, 13 Nov 2007, Erez Zadok wrote:
[...]
> I'm glad to report that this unionfs, not the one in 2.6.24-rc2-mm1
> but the one including those 9 patches you posted, now gets through
> my testing with tmpfs without a problem. I do still get occasional
> "unionfs: new lower inode mtime (bindex=0, name=<directory>)"
> messages, but nothing worse seen yet: a big improvement.
Excellent.
> I did think you could clean up the doubled set_page_dirtys,
> but it's of no consequence.
Yes, looks good. I'll send that as a patch. Thanks.
> Hugh
>
> --- 2.6.24-rc2-mm1+9/fs/unionfs/mmap.c 2007-11-17 12:23:30.000000000
> +0000
> +++ linux/fs/unionfs/mmap.c 2007-11-17 20:22:29.000000000 +0000
> @@ -56,6 +56,7 @@ static int unionfs_writepage(struct page
> copy_highpage(lower_page, page);
> flush_dcache_page(lower_page);
> SetPageUptodate(lower_page);
> + set_page_dirty(lower_page);
>
> /*
> * Call lower writepage (expects locked page). However, if we are
> @@ -66,12 +67,11 @@ static int unionfs_writepage(struct page
> * success.
> */
> if (wbc->for_reclaim) {
> - set_page_dirty(lower_page);
> unlock_page(lower_page);
> goto out_release;
> }
> +
> BUG_ON(!lower_mapping->a_ops->writepage);
> - set_page_dirty(lower_page);
> clear_page_dirty_for_io(lower_page); /* emulate VFS behavior */
> err = lower_mapping->a_ops->writepage(lower_page, wbc);
> if (err < 0)
Erez.
-
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