> @@ -1052,6 +1051,7 @@ static int __mpage_da_writepage(struct page *page,
> head = page_buffers(page);
> bh = head;
> do {
> +
I guess this line is a typo.
> BUG_ON(buffer_locked(bh));
> if (buffer_dirty(bh))
> mpage_add_bh_to_extent(mpd, logical, bh);
> diff --git a/mm/page-writeback.c b/mm/page-writeback.c
> index 789b6ad..655b8bf 100644
> --- a/mm/page-writeback.c
> +++ b/mm/page-writeback.c
> @@ -881,7 +881,12 @@ int write_cache_pages(struct address_space *mapping,
> pagevec_init(&pvec, 0);
> if (wbc->range_cyclic) {
> index = mapping->writeback_index; /* Start from prev offset */
> - end = -1;
> + /*
> + * write only till the specified range_end even in cyclic mode
> + */
> + end = wbc->range_end >> PAGE_CACHE_SHIFT;
> + if (!end)
> + end = -1;
> } else {
> index = wbc->range_start >> PAGE_CACHE_SHIFT;
> end = wbc->range_end >> PAGE_CACHE_SHIFT;
Are you sure you won't break other users of range_cyclic with this
change?
Honza
--
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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