On Thu, Nov 27, 2014 at 08:20:35AM +0800, kbuild test robot wrote: > tree: git://git.cmpxchg.org/linux-mmotm.git master > head: a2d887dee78e23dc092ff14ae2ad22592437a328 > commit: cd4687a1102a69d9045d09e0af6bb9bacfb49ee5 [185/397] mm/nommu: use alloc_pages_exact() rather than it's own implementation > config: m32r-m32104ut_defconfig (attached as .config) > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout cd4687a1102a69d9045d09e0af6bb9bacfb49ee5 > # save the attached .config to linux build tree > make.cross ARCH=m32r > > All warnings: > > mm/nommu.c: In function 'do_mmap_private': > >> mm/nommu.c:1193:8: warning: assignment makes pointer from integer without a cast > base = __get_free_pages(GFP_KERNEL, order); > ^ > > vim +1193 mm/nommu.c > > 1177 /* allocate some memory to hold the mapping > 1178 * - note that this may not return a page-aligned address if the object > 1179 * we're allocating is smaller than a page > 1180 */ > 1181 order = get_order(len); > 1182 kdebug("alloc order %d for %lx", order, len); > 1183 > 1184 total = 1 << order; > 1185 point = len >> PAGE_SHIFT; > 1186 > 1187 /* we don't want to allocate a power-of-2 sized page set */ > 1188 if (sysctl_nr_trim_pages && total - point >= sysctl_nr_trim_pages) { > 1189 total = point; > 1190 kdebug("try to alloc exact %lu pages", total); > 1191 base = alloc_pages_exact(len, GFP_KERNEL); > 1192 } else { > > 1193 base = __get_free_pages(GFP_KERNEL, order); > 1194 } This will fix the warning. Thanks. ----------->8------------------- >From 19893f8b8b02ba52e48bf2c6e387ac1646cbe6ea Mon Sep 17 00:00:00 2001 From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Date: Thu, 27 Nov 2014 11:17:38 +0900 Subject: [PATCH] mm/nommu: use alloc_pages_exact rather than it's own implementation fix Fix following warning from 0-day kernel test infrastructure. make.cross ARCH=m32r All warnings: mm/nommu.c: In function 'do_mmap_private': >> mm/nommu.c:1193:8: warning: assignment makes pointer (snip)... base = __get_free_pages(GFP_KERNEL, order); ^ Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> --- mm/nommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/nommu.c b/mm/nommu.c index 1b87c17..099cc72 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1190,7 +1190,7 @@ static int do_mmap_private(struct vm_area_struct *vma, kdebug("try to alloc exact %lu pages", total); base = alloc_pages_exact(len, GFP_KERNEL); } else { - base = __get_free_pages(GFP_KERNEL, order); + base = (void *)__get_free_pages(GFP_KERNEL, order); } if (!base) -- 1.7.9.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>