From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C8473C43381 for ; Tue, 26 Feb 2019 17:45:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 91AB721852 for ; Tue, 26 Feb 2019 17:45:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551203113; bh=RLv6CFxi1O6x2llBM7FCu3PlHR+p6Joxu18t2U5hK/o=; h=From:To:Cc:Subject:Date:List-ID:From; b=QS/8b2NY1NphHLozgbkdI+Lpo/M6AZm7Bhdo/4bT+0xZkbvgxsY7vDKA4BGy5saR7 VH9n7RTeUa9KgORz8k5nEMp1Uon+8JzT7V70mZe3maw8j2E2Ln/jwvO5bFD3i66u8J H44cshBmVXV4dhshJvX646ZMZ0Pet4UCdDA+Rnjg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728786AbfBZRpL (ORCPT ); Tue, 26 Feb 2019 12:45:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:46926 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727108AbfBZRpK (ORCPT ); Tue, 26 Feb 2019 12:45:10 -0500 Received: from localhost (unknown [104.132.1.68]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 69D052173C; Tue, 26 Feb 2019 17:45:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551203109; bh=RLv6CFxi1O6x2llBM7FCu3PlHR+p6Joxu18t2U5hK/o=; h=From:To:Cc:Subject:Date:From; b=1GArn06cTd2b33bjiLCOMA/XIgKKUljw66jfdEpQ0f9+X50+3PuqrIgqAFHP64TQu 3SMHxT3NTAi7/LopR4DcyZBEAbjHoGhs4w/UBe6tSqhomy8qrvkKfPyn5g5rT+N2HA ZxhPyOx/NoyO3qL95kE1UkTdhv0WEnGjsZx+FBzo= From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH] f2fs: give random value to i_generation Date: Tue, 26 Feb 2019 09:45:07 -0800 Message-Id: <20190226174507.76205-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.19.0.605.g01d371f741-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This follows to give random number to i_generation along with commit 232530680290b ("ext4: improve smp scalability for inode generation") This can be used for DUN for UFS HW encryption. Signed-off-by: Jaegeuk Kim --- fs/f2fs/f2fs.h | 2 -- fs/f2fs/namei.c | 3 ++- fs/f2fs/super.c | 1 - 3 files changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 19cbf17550c7..3007759dd2dd 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1242,8 +1242,6 @@ struct f2fs_sb_info { unsigned int nquota_files; /* # of quota sysfile */ - u32 s_next_generation; /* for NFS support */ - /* # of pages, see count_type */ atomic_t nr_pages[NR_COUNT_TYPE]; /* # of allocated blocks */ diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 62d9829f3a6a..f218d9424d8b 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -50,7 +51,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); F2FS_I(inode)->i_crtime = inode->i_mtime; - inode->i_generation = sbi->s_next_generation++; + inode->i_generation = prandom_u32(); if (S_ISDIR(inode->i_mode)) F2FS_I(inode)->i_current_depth = 1; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 45121190a2ba..42eb5c86330a 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3129,7 +3129,6 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) sb->s_maxbytes = sbi->max_file_blocks << le32_to_cpu(raw_super->log_blocksize); sb->s_max_links = F2FS_LINK_MAX; - get_random_bytes(&sbi->s_next_generation, sizeof(u32)); #ifdef CONFIG_QUOTA sb->dq_op = &f2fs_quota_operations; -- 2.19.0.605.g01d371f741-goog