mm, compaction: rename map_pages to split_map_pages

It's non-obvious that high-order free pages are split into order-0 pages
from the function name.  Fix it.

Link: http://lkml.kernel.org/r/20190118175136.31341-6-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Rientjes <rientjes@google.com>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/compaction.c b/mm/compaction.c
index 163841e1b1679ee453e77d7ce764e912f34b231f..32a88b49f9735d09fcab47868f687149ed7d5ed2 100644 (file)
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -66,7 +66,7 @@ static unsigned long release_freepages(struct list_head *freelist)
        return high_pfn;
 }
 
-static void map_pages(struct list_head *list)
+static void split_map_pages(struct list_head *list)
 {
        unsigned int i, order, nr_pages;
        struct page *page, *next;
@@ -644,7 +644,7 @@ isolate_freepages_range(struct compact_control *cc,
        }
 
        /* __isolate_free_page() does not map the pages */
-       map_pages(&freelist);
+       split_map_pages(&freelist);
 
        if (pfn < end_pfn) {
                /* Loop terminated early, cleanup. */
@@ -1141,7 +1141,7 @@ static void isolate_freepages(struct compact_control *cc)
        }
 
        /* __isolate_free_page() does not map the pages */
-       map_pages(freelist);
+       split_map_pages(freelist);
 
        /*
         * Record where the free scanner will restart next time. Either we