On Wed, Jul 22, 2015 at 02:29:08PM +0200, Vlastimil Babka wrote: > Subject: mm: rename and move get/set_freepage_migratetype > > The pair of get/set_freepage_migratetype() functions are used to cache > pageblock migratetype for a page put on a pcplist, so that it does not have > to be retrieved again when the page is put on a free list (e.g. when pcplists > become full). Historically it was also assumed that the value is accurate for > pages on freelists (as the functions' names unfortunately suggest), but that > cannot be guaranteed without affecting various allocator fast paths. It is in > fact not needed and all such uses have been removed. > > The last two remaining (but pointless) usages related to pages of freelists > are removed by this patch: > - move_freepages() which operates on pages already on freelists > - __free_pages_ok() which puts a page directly to freelist, bypassing pcplists > > To prevent further confusion, rename the functions to > get/set_pcppage_migratetype() and expand their description. Since all the > users are now in mm/page_alloc.c, move the functions there from the shared > header. > > Signed-off-by: Vlastimil Babka <vba...@suse.cz> > Acked-by: David Rientjes <rient...@google.com>
Acked-by: Mel Gorman <mgor...@techsingularity.net> -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
