From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753351AbaAKUQL (ORCPT ); Sat, 11 Jan 2014 15:16:11 -0500 Received: from mail-pa0-f41.google.com ([209.85.220.41]:63052 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751072AbaAKUQH (ORCPT ); Sat, 11 Jan 2014 15:16:07 -0500 From: Monam Agarwal To: gregkh@linuxfoundation.org, monamagarwal123@gmail.com, andreas.dilger@intel.com, peter.p.waskiewicz.jr@intel.com, tao.peng@emc.com, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: [PATCH v3] Staging: lustre: Use of fls to find last set bit Date: Sun, 12 Jan 2014 01:45:51 +0530 Message-Id: <1389471351-31782-1-git-send-email-monamagarwal123@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1389468763-25662-1-git-send-email-monamagarwal123@gmail.com> References: <1389468763-25662-1-git-send-email-monamagarwal123@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This introduces fls in lustre/ldlm/ldlm_extent.c to find the last set bit. Signed-off-by: Monam Agarwal --- Changes since v1: * Incorrect commit message * Use of fls function Changes since v2: * Removal of extra variable drivers/staging/lustre/lustre/ldlm/ldlm_extent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c b/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c index ac5d66a..a4f382d 100644 --- a/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c @@ -153,7 +153,7 @@ static inline int lock_mode_to_index(ldlm_mode_t mode) LASSERT(mode != 0); LASSERT(IS_PO2(mode)); - for (index = -1; mode; index++, mode >>= 1) ; + index = fls(mode)-1; LASSERT(index < LCK_MODE_NUM); return index; } -- 1.7.9.5