* Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> wrote: > When memory is hotplugged pages_correctly_reserved() is called to verify > that the added memory is present, this routine traverses through every > struct page and verifies that PageReserved() is set. This is a slow > operation especially if a large amount of memory is added. > > Instead of checking every page, it is enough to simply check that the > section is present, has mapping (struct page array is allocated), and the > mapping is online. > > In addition, we should not excpect that probe routine sets flags in struct > page, as the struct pages have not yet been initialized. The initialization > should be done in __init_single_page(), the same as during boot. > > Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> Reviewed-by: Ingo Molnar <mingo@xxxxxxxxxx> Thanks, Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
