On Mon, 18 Oct 2010 14:18:52 +0900 Minchan Kim <minchan.kim@xxxxxxxxx> wrote: > > > >> > + * > >> > + * Search an area of @size in the physical memory map and checks wheter > >> > >> Typo > >> whether > >> > >> > + * we can create a contigous free space. If it seems possible, try to > >> > + * create contigous space with page migration. If no_search==true, we just try > >> > + * to allocate [hint, hint+size) range of pages as contigous block. > >> > + * > >> > + * Returns a page of the beginning of contiguous block. At failure, NULL > >> > + * is returned. Each page in the area is set to page_count() = 1. Because > >> > >> Why do you mention page_count() = 1? > >> Do users of this function have to know it? > > > > A user can free any page within the range for his purpose. > > I think it's not a good idea if we allow handling of page by page, not > for page-chunk requested by user. > By mistake, free_contig_pages could have a trouble to free pages. > Why do you support the feature? Do you have any motivation? > No big motivation. Usual pages are set up by prep_compund_page(page, order), but it is pages smaller than MAX_ORDER. Then, I called prep_new_page() one by one. And I don't think some new prep_xxxx_page() is required. If you requests, ok, I'll add one. Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>