ZONE_DEVICE (a.k.a. device memory) is no longer marked PG_reserved. Update the comment.
While at it, make it match what the code is acutally doing (reject vs. accept). Cc: Kees Cook <[email protected]> Cc: Andrew Morton <[email protected]> Cc: "Isaac J. Manjarres" <[email protected]> Cc: "Matthew Wilcox (Oracle)" <[email protected]> Cc: Qian Cai <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: David Hildenbrand <[email protected]> --- mm/usercopy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/usercopy.c b/mm/usercopy.c index 660717a1ea5c..80f254024c97 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -199,9 +199,9 @@ static inline void check_page_span(const void *ptr, unsigned long n, return; /* - * Reject if range is entirely either Reserved (i.e. special or - * device memory), or CMA. Otherwise, reject since the object spans - * several independently allocated pages. + * Accept if the range is entirely either Reserved ("special") or + * CMA. Otherwise, reject since the object spans several independently + * allocated pages. */ is_reserved = PageReserved(page); is_cma = is_migrate_cma_page(page); -- 2.21.0 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
