From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f70.google.com (mail-pl0-f70.google.com [209.85.160.70]) by kanga.kvack.org (Postfix) with ESMTP id EC1996B0294 for ; Sun, 4 Feb 2018 20:29:36 -0500 (EST) Received: by mail-pl0-f70.google.com with SMTP id 36so9980774plb.18 for ; Sun, 04 Feb 2018 17:29:36 -0800 (PST) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id 206si417365pgb.647.2018.02.04.17.28.06 for (version=TLS1 cipher=AES128-SHA bits=128/128); Sun, 04 Feb 2018 17:28:06 -0800 (PST) From: Davidlohr Bueso Subject: [PATCH 44/64] arch/score: use mm locking wrappers Date: Mon, 5 Feb 2018 02:27:34 +0100 Message-Id: <20180205012754.23615-45-dbueso@wotan.suse.de> In-Reply-To: <20180205012754.23615-1-dbueso@wotan.suse.de> References: <20180205012754.23615-1-dbueso@wotan.suse.de> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org, mingo@kernel.org Cc: peterz@infradead.org, ldufour@linux.vnet.ibm.com, jack@suse.cz, mhocko@kernel.org, kirill.shutemov@linux.intel.com, mawilcox@microsoft.com, mgorman@techsingularity.net, dave@stgolabs.net, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Davidlohr Bueso From: Davidlohr Bueso This becomes quite straightforward with the mmrange in place. Signed-off-by: Davidlohr Bueso --- arch/score/mm/fault.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c index 07a8637ad142..535df3b377a5 100644 --- a/arch/score/mm/fault.c +++ b/arch/score/mm/fault.c @@ -81,7 +81,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, if (user_mode(regs)) flags |= FAULT_FLAG_USER; - down_read(&mm->mmap_sem); + mm_read_lock(mm, &mmrange); vma = find_vma(mm, address); if (!vma) goto bad_area; @@ -127,7 +127,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, else tsk->min_flt++; - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); return; /* @@ -135,7 +135,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, * Fix it, but check if it's kernel or user first.. */ bad_area: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); bad_area_nosemaphore: /* User mode accesses just cause a SIGSEGV */ @@ -174,14 +174,14 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, * us unable to handle the page fault gracefully. */ out_of_memory: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); if (!user_mode(regs)) goto no_context; pagefault_out_of_memory(); return; do_sigbus: - up_read(&mm->mmap_sem); + mm_read_unlock(mm, &mmrange); /* Kernel mode? Handle exceptions or die */ if (!user_mode(regs)) goto no_context; -- 2.13.6 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org