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Thu, 10 Oct 2019 15:41:17 +0200 (CEST) Received: from localhost.localdomain.localdomain (h-205-35.A357.priv.bahnhof.se [155.4.205.35]) by mail1.shipmail.org (Postfix) with ESMTPSA id 4E2D636105C; Thu, 10 Oct 2019 15:41:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=shipmail.org; s=mail; t=1570714877; bh=WNkn6DKxrc1ZFUEVaoGHRMxt8C+XYlS9MSYyqtJVrQg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D32cRh/8yzGyBnNXzo5kC1wRWfBHZhjN7bh56q7wTX8quGWXIWNK3PKaBKbSYpelQ qAyAKiotKQAruoUnITQIrRqIfNt13qlj3lsJt4dIIAFy4HgFGxt7qK8QwOUP0Ge803 bxebV8E7Upmqi6PUwLtnl6wA3ZklU8oN4CJxDhIU= From: =?utf-8?q?Thomas_Hellstr=C3=B6m_=28VMware=29?= To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, torvalds@linux-foundation.org, kirill@shutemov.name Cc: Thomas Hellstrom Subject: [RFC PATCH 2/4] fs: task_mmu: Have the pagewalk avoid positive callback return codes Date: Thu, 10 Oct 2019 15:40:56 +0200 Message-Id: <20191010134058.11949-3-thomas_os@shipmail.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191010134058.11949-1-thomas_os@shipmail.org> References: <20191010134058.11949-1-thomas_os@shipmail.org> MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.004728, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Thomas Hellstrom The pagewalk code is being reworked to have positive callback return codes mean "walk control". Avoid using positive return codes: "1" is replaced by "-ENOBUFS". Signed-off-by: Thomas Hellstrom --- fs/proc/task_mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 9442631fd4af..ef11969d9ba1 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1265,7 +1265,7 @@ struct pagemapread { #define PM_SWAP BIT_ULL(62) #define PM_PRESENT BIT_ULL(63) -#define PM_END_OF_BUFFER 1 +#define PM_END_OF_BUFFER (-ENOBUFS) static inline pagemap_entry_t make_pme(u64 frame, u64 flags) {