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[192.55.52.88]) by mx.google.com with ESMTPS id w13-v6si6403728pll.449.2018.08.30.07.43.45 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 Aug 2018 07:43:45 -0700 (PDT) Received-SPF: pass (google.com: domain of yu-cheng.yu@intel.com designates 192.55.52.88 as permitted sender) client-ip=192.55.52.88; Authentication-Results: mx.google.com; spf=pass (google.com: domain of yu-cheng.yu@intel.com designates 192.55.52.88 as permitted sender) smtp.mailfrom=yu-cheng.yu@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Aug 2018 07:43:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,307,1531810800"; d="scan'208";a="67186721" Received: from 2b52.sc.intel.com ([143.183.136.52]) by fmsmga008.fm.intel.com with ESMTP; 30 Aug 2018 07:43:42 -0700 From: Yu-cheng Yu To: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , "Ravi V. Shankar" , Vedvyas Shanbhogue Cc: Yu-cheng Yu Subject: [RFC PATCH v3 17/24] mm: Introduce do_mmap_locked() Date: Thu, 30 Aug 2018 07:38:57 -0700 Message-Id: <20180830143904.3168-18-yu-cheng.yu@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180830143904.3168-1-yu-cheng.yu@intel.com> References: <20180830143904.3168-1-yu-cheng.yu@intel.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP There are a few places that need do_mmap() with mm->mmap_sem held. Create an in-line function for that. Signed-off-by: Yu-cheng Yu --- include/linux/mm.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index f40387ecd920..c4cc07baccda 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2318,6 +2318,24 @@ static inline void mm_populate(unsigned long addr, unsigned long len) static inline void mm_populate(unsigned long addr, unsigned long len) {} #endif +static inline unsigned long do_mmap_locked(unsigned long addr, + unsigned long len, unsigned long prot, unsigned long flags, + vm_flags_t vm_flags) +{ + struct mm_struct *mm = current->mm; + unsigned long populate; + + down_write(&mm->mmap_sem); + addr = do_mmap(NULL, addr, len, prot, flags, vm_flags, 0, + &populate, NULL); + up_write(&mm->mmap_sem); + + if (populate) + mm_populate(addr, populate); + + return addr; +} + /* These take the mm semaphore themselves */ extern int __must_check vm_brk(unsigned long, unsigned long); extern int __must_check vm_brk_flags(unsigned long, unsigned long, unsigned long);