Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932206Ab0AFPYz (ORCPT ); Wed, 6 Jan 2010 10:24:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754884Ab0AFPYw (ORCPT ); Wed, 6 Jan 2010 10:24:52 -0500 Received: from smtp.mujha-vel.cz ([81.30.225.246]:40188 "EHLO smtp.mujha-vel.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754563Ab0AFPYs (ORCPT ); Wed, 6 Jan 2010 10:24:48 -0500 From: Jiri Slaby To: jirislaby@gmail.com Cc: linux-kernel@vger.kernel.org, Benjamin Herrenschmidt , Paul Mackerras , linuxppc-dev@ozlabs.org Subject: [PATCH] PPC: use helpers for rlimits Date: Wed, 6 Jan 2010 16:24:31 +0100 Message-Id: <1262791479-26594-3-git-send-email-jslaby@suse.cz> X-Mailer: git-send-email 1.6.5.7 In-Reply-To: <1262791479-26594-1-git-send-email-jslaby@suse.cz> References: <1262791479-26594-1-git-send-email-jslaby@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2155 Lines: 60 Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in 3e10e716abf3c71bdb5d86b8f507f9e72236c9cd or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: linuxppc-dev@ozlabs.org --- arch/powerpc/mm/mmap_64.c | 4 ++-- arch/powerpc/platforms/cell/spufs/coredump.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/mm/mmap_64.c b/arch/powerpc/mm/mmap_64.c index 0d957a4..5a783d8 100644 --- a/arch/powerpc/mm/mmap_64.c +++ b/arch/powerpc/mm/mmap_64.c @@ -47,7 +47,7 @@ static inline int mmap_is_legacy(void) if (current->personality & ADDR_COMPAT_LAYOUT) return 1; - if (current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY) + if (rlimit(RLIMIT_STACK) == RLIM_INFINITY) return 1; return sysctl_legacy_va_layout; @@ -77,7 +77,7 @@ static unsigned long mmap_rnd(void) static inline unsigned long mmap_base(void) { - unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur; + unsigned long gap = rlimit(RLIMIT_STACK); if (gap < MIN_GAP) gap = MIN_GAP; diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c index c4d4a19..eea1202 100644 --- a/arch/powerpc/platforms/cell/spufs/coredump.c +++ b/arch/powerpc/platforms/cell/spufs/coredump.c @@ -54,7 +54,7 @@ static ssize_t do_coredump_read(int num, struct spu_context *ctx, void *buffer, */ static int spufs_dump_write(struct file *file, const void *addr, int nr, loff_t *foffset) { - unsigned long limit = current->signal->rlim[RLIMIT_CORE].rlim_cur; + unsigned long limit = rlimit(RLIMIT_CORE); ssize_t written; if (*foffset + nr > limit) -- 1.6.5.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/