[120/143] mm/gup: change index type to long as it counts pages

Commit Message

Andrew Morton May 5, 2021, 1:39 a.m. UTC

From: Pavel Tatashin <[e-mail]>
Subject: mm/gup: change index type to long as it counts pages

In __get_user_pages_locked() i counts number of pages which should be
long, as long is used in all other places to contain number of pages, and
32-bit becomes increasingly small for handling page count proportional
values.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Pavel Tatashin <[e-mail]>
Acked-by: Michal Hocko <[e-mail]>
Cc: Dan Williams <[e-mail]>
Cc: David Hildenbrand <[e-mail]>
Cc: David Rientjes <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Ira Weiny <[e-mail]>
Cc: James Morris <[e-mail]>
Cc: Jason Gunthorpe <[e-mail]>
Cc: Jason Gunthorpe <[e-mail]>
Cc: John Hubbard <[e-mail]>
Cc: Joonsoo Kim <[e-mail]>
Cc: Matthew Wilcox <[e-mail]>
Cc: Mel Gorman <[e-mail]>
Cc: Michal Hocko <[e-mail]>
Cc: Mike Kravetz <[e-mail]>
Cc: Oscar Salvador <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Sasha Levin <[e-mail]>
Cc: Steven Rostedt (VMware) <[e-mail]>
Cc: Tyler Hicks <[e-mail]>
Cc: Vlastimil Babka <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/gup.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

--- a/mm/gup.c~mm-gup-change-index-type-to-long-as-it-counts-pages
+++ a/mm/gup.c
@@ -1528,7 +1528,7 @@  static long __get_user_pages_locked(stru
 {
 	struct vm_area_struct *vma;
 	unsigned long vm_flags;
-	int i;
+	long i;
 
 	/* calculate required read or write permissions.
 	 * If FOLL_FORCE is set, we only require the "MAY" flags.