From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: [patch 103/128] mm: don't return the number of pages from map_kernel_range{,_noflush} Date: Tue, 02 Jun 2020 13:16:11 -0700 Message-ID: <20200602201611.LyzdoZd0K%akpm@linux-foundation.org> References: <20200602130930.8e8f10fa6f19e3766e70921f@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.29.99]:32830 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726267AbgFBUQN (ORCPT ); Tue, 2 Jun 2020 16:16:13 -0400 In-Reply-To: <20200602130930.8e8f10fa6f19e3766e70921f@linux-foundation.org> Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: airlied@linux.ie, akpm@linux-foundation.org, benh@kernel.crashing.org, borntraeger@de.ibm.com, catalin.marinas@arm.com, christophe.leroy@c-s.fr, daniel.vetter@ffwll.ch, daniel@ffwll.ch, gor@linux.ibm.com, gregkh@linuxfoundation.org, haiyangz@microsoft.com, hannes@cmpxchg.org, hch@lst.de, heiko.carstens@de.ibm.com, kys@microsoft.com, labbott@redhat.com, linux-mm@kvack.org, mark.rutland@arm.com, mikelley@microsoft.com, minchan@kernel.org, mm-commits@vger.kernel.org, ngupta@vflare.org, paulus@ozlabs.org, peterz@infradead.org, robin.murphy@arm.com, sakari.ailus@linux.intel.com, sthemmin@microsoft.com, sumit.semwal@linaro.org, torvalds@linux-foundation.org, wei.liu@kernel.org, will@kernel.org, xiang@kernel.org From: Christoph Hellwig Subject: mm: don't return the number of pages from map_kernel_range{,_noflush} None of the callers needs the number of pages, and a 0 / -errno return value is a lot more intuitive. Link: http://lkml.kernel.org/r/20200414131348.444715-16-hch@lst.de Signed-off-by: Christoph Hellwig Acked-by: Peter Zijlstra (Intel) Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Daniel Vetter Cc: Daniel Vetter Cc: David Airlie Cc: Gao Xiang Cc: Greg Kroah-Hartman Cc: Haiyang Zhang Cc: Johannes Weiner Cc: "K. Y. Srinivasan" Cc: Laura Abbott Cc: Mark Rutland Cc: Michael Kelley Cc: Minchan Kim Cc: Nitin Gupta Cc: Robin Murphy Cc: Sakari Ailus Cc: Stephen Hemminger Cc: Sumit Semwal Cc: Wei Liu Cc: Benjamin Herrenschmidt Cc: Catalin Marinas Cc: Heiko Carstens Cc: Paul Mackerras Cc: Vasily Gorbik Cc: Will Deacon Signed-off-by: Andrew Morton --- mm/vmalloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/vmalloc.c~mm-dont-return-the-number-of-pages-from-map_kernel_range_noflush +++ a/mm/vmalloc.c @@ -250,7 +250,7 @@ static int vmap_p4d_range(pgd_t *pgd, un * function. * * RETURNS: - * The number of pages mapped on success, -errno on failure. + * 0 on success, -errno on failure. */ int map_kernel_range_noflush(unsigned long addr, unsigned long size, pgprot_t prot, struct page **pages) @@ -270,7 +270,7 @@ int map_kernel_range_noflush(unsigned lo return err; } while (pgd++, addr = next, addr != end); - return nr; + return 0; } static int map_kernel_range(unsigned long start, unsigned long size, _