On Thu 10-11-16 19:36:40, Kirill A. Shutemov wrote:
> Unlike THP, hugetlb pages represented by one entry on radix-tree.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
> Cc: Jan Kara <jack@xxxxxxx>
Thanks!
Honza
> ---
> mm/filemap.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/mm/filemap.c b/mm/filemap.c
> index 849f459ad078..7602e8fabf5e 100644
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@ -169,7 +169,10 @@ static int page_cache_tree_insert(struct address_space *mapping,
> static void page_cache_tree_delete(struct address_space *mapping,
> struct page *page, void *shadow)
> {
> - int i, nr = PageHuge(page) ? 1 : hpage_nr_pages(page);
> + int i, nr;
> +
> + /* hugetlb pages represented by one entry on radix-tree */
> + nr = PageHuge(page) ? 1 : hpage_nr_pages(page);
>
> VM_BUG_ON_PAGE(!PageLocked(page), page);
> VM_BUG_ON_PAGE(PageTail(page), page);
> --
> 2.9.3
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
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