mm: rename gfpflags_to_migratetype to gfp_migratetype for same convention

Pageblock migrate type is encoded in GFP flags, just as zone_type and
zonelist.

Currently we use gfp_zone() and gfp_zonelist() to extract related
information, it would be proper to use the same naming convention for
migrate type.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Link: http://lkml.kernel.org/r/20200329080823.7735-1-richard.weiyang@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/gfp.h

@@ -312,7 +312,7 @@ struct vm_area_struct;
 #define GFP_MOVABLE_MASK (__GFP_RECLAIMABLE|__GFP_MOVABLE)
 #define GFP_MOVABLE_SHIFT 3
 
-static inline int gfpflags_to_migratetype(const gfp_t gfp_flags)
+static inline int gfp_migratetype(const gfp_t gfp_flags)
 {
 	VM_WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
 	BUILD_BUG_ON((1UL << GFP_MOVABLE_SHIFT) != ___GFP_MOVABLE);

mm/compaction.c

@@ -2100,7 +2100,7 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
 	INIT_LIST_HEAD(&cc->freepages);
 	INIT_LIST_HEAD(&cc->migratepages);
 
-	cc->migratetype = gfpflags_to_migratetype(cc->gfp_mask);
+	cc->migratetype = gfp_migratetype(cc->gfp_mask);
 	ret = compaction_suitable(cc->zone, cc->order, cc->alloc_flags,
 							cc->highest_zoneidx);
 	/* Compaction is likely to fail */

mm/page_alloc.c

@@ -4285,7 +4285,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
 		alloc_flags |= ALLOC_HARDER;
 
 #ifdef CONFIG_CMA
-	if (gfpflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
+	if (gfp_migratetype(gfp_mask) == MIGRATE_MOVABLE)
 		alloc_flags |= ALLOC_CMA;
 #endif
 	return alloc_flags;
@@ -4735,7 +4735,7 @@ static inline bool prepare_alloc_pages(gfp_t gfp_mask, unsigned int order,
 	ac->highest_zoneidx = gfp_zone(gfp_mask);
 	ac->zonelist = node_zonelist(preferred_nid, gfp_mask);
 	ac->nodemask = nodemask;
-	ac->migratetype = gfpflags_to_migratetype(gfp_mask);
+	ac->migratetype = gfp_migratetype(gfp_mask);
 
 	if (cpusets_enabled()) {
 		*alloc_mask |= __GFP_HARDWALL;

mm/page_owner.c

@@ -312,8 +312,7 @@ void pagetypeinfo_showmixedcount_print(struct seq_file *m,
 				continue;
 
 			page_owner = get_page_owner(page_ext);
-			page_mt = gfpflags_to_migratetype(
-					page_owner->gfp_mask);
+			page_mt = gfp_migratetype(page_owner->gfp_mask);
 			if (pageblock_mt != page_mt) {
 				if (is_migrate_cma(pageblock_mt))
 					count[MIGRATE_MOVABLE]++;
@@ -359,7 +358,7 @@ print_page_owner(char __user *buf, size_t count, unsigned long pfn,
 
 	/* Print information relevant to grouping pages by mobility */
 	pageblock_mt = get_pageblock_migratetype(page);
-	page_mt  = gfpflags_to_migratetype(page_owner->gfp_mask);
+	page_mt  = gfp_migratetype(page_owner->gfp_mask);
 	ret += snprintf(kbuf + ret, count - ret,
 			"PFN %lu type %s Block %lu type %s Flags %#lx(%pGp)\n",
 			pfn,
@@ -416,7 +415,7 @@ void __dump_page_owner(struct page *page)
 
 	page_owner = get_page_owner(page_ext);
 	gfp_mask = page_owner->gfp_mask;
-	mt = gfpflags_to_migratetype(gfp_mask);
+	mt = gfp_migratetype(gfp_mask);
 
 	if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags)) {
 		pr_alert("page_owner info is not present (never set?)\n");