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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8EF9AC433F5 for ; Thu, 19 May 2022 22:28:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245490AbiESW2h (ORCPT ); Thu, 19 May 2022 18:28:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245510AbiESW2A (ORCPT ); Thu, 19 May 2022 18:28:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF452737BC for ; Thu, 19 May 2022 15:27:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7AE4E60DB5 for ; Thu, 19 May 2022 22:27:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D0927C385B8; Thu, 19 May 2022 22:27:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1652999251; bh=xzHsK/1Detf6/ruslX1QQ0h+CDRbpC6IAtEiAv/Gl50=; h=Date:To:From:Subject:From; b=1DGtDwVAIZKkIRv/+6KjlLQ/l8QXucMPwehtmksZ7pGlr89HfORMbRjjlxKnTUSnB DHHY/MUdULx8LFdI6sOcyFyeD7eA/TO4OIaTcTW0j/49jfJN7q90cOrxOcDyIN/TCl gyEGaRrinScKzpteTgkJseZrjuAGnvmoUXWpOTtE= Date: Thu, 19 May 2022 15:27:31 -0700 To: mm-commits@vger.kernel.org, hirofumi@mail.parknet.co.jp, cccheng@synology.com, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-nonmm-stable] fat-split-fat_truncate_time-into-separate-functions.patch removed from -mm tree Message-Id: <20220519222731.D0927C385B8@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: fat: split fat_truncate_time() into separate functions has been removed from the -mm tree. Its filename was fat-split-fat_truncate_time-into-separate-functions.patch This patch was dropped because it was merged into the mm-nonmm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Chung-Chiang Cheng Subject: fat: split fat_truncate_time() into separate functions Date: Tue, 3 May 2022 23:25:33 +0800 Separate fat_truncate_time() to each timestamps for later creation time work. This patch does not introduce any functional changes, it's merely refactoring change. Link: https://lkml.kernel.org/r/20220503152536.2503003-1-cccheng@synology.com Signed-off-by: Chung-Chiang Cheng Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton --- fs/fat/fat.h | 6 +++ fs/fat/misc.c | 74 ++++++++++++++++++++++++++++++------------------ 2 files changed, 53 insertions(+), 27 deletions(-) --- a/fs/fat/fat.h~fat-split-fat_truncate_time-into-separate-functions +++ a/fs/fat/fat.h @@ -453,6 +453,12 @@ extern void fat_time_fat2unix(struct msd __le16 __time, __le16 __date, u8 time_cs); extern void fat_time_unix2fat(struct msdos_sb_info *sbi, struct timespec64 *ts, __le16 *time, __le16 *date, u8 *time_cs); +extern struct timespec64 fat_truncate_atime(const struct msdos_sb_info *sbi, + const struct timespec64 *ts); +extern struct timespec64 fat_truncate_crtime(const struct msdos_sb_info *sbi, + const struct timespec64 *ts); +extern struct timespec64 fat_truncate_mtime(const struct msdos_sb_info *sbi, + const struct timespec64 *ts); extern int fat_truncate_time(struct inode *inode, struct timespec64 *now, int flags); extern int fat_update_time(struct inode *inode, struct timespec64 *now, --- a/fs/fat/misc.c~fat-split-fat_truncate_time-into-separate-functions +++ a/fs/fat/misc.c @@ -193,7 +193,7 @@ static long days_in_year[] = { 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, }; -static inline int fat_tz_offset(struct msdos_sb_info *sbi) +static inline int fat_tz_offset(const struct msdos_sb_info *sbi) { return (sbi->options.tz_set ? -sbi->options.time_offset : @@ -289,15 +289,48 @@ static inline struct timespec64 fat_time } /* + * truncate atime to 24 hour granularity (00:00:00 in local timezone) + */ +struct timespec64 fat_truncate_atime(const struct msdos_sb_info *sbi, + const struct timespec64 *ts) +{ + /* to localtime */ + time64_t seconds = ts->tv_sec - fat_tz_offset(sbi); + s32 remainder; + + div_s64_rem(seconds, SECS_PER_DAY, &remainder); + /* to day boundary, and back to unix time */ + seconds = seconds + fat_tz_offset(sbi) - remainder; + + return (struct timespec64){ seconds, 0 }; +} + +/* + * truncate creation time with appropriate granularity: + * msdos - 2 seconds + * vfat - 10 milliseconds + */ +struct timespec64 fat_truncate_crtime(const struct msdos_sb_info *sbi, + const struct timespec64 *ts) +{ + if (sbi->options.isvfat) + return fat_timespec64_trunc_10ms(*ts); + else + return fat_timespec64_trunc_2secs(*ts); +} + +/* + * truncate mtime to 2 second granularity + */ +struct timespec64 fat_truncate_mtime(const struct msdos_sb_info *sbi, + const struct timespec64 *ts) +{ + return fat_timespec64_trunc_2secs(*ts); +} + +/* * truncate the various times with appropriate granularity: - * root inode: - * all times always 0 - * all other inodes: - * mtime - 2 seconds - * ctime - * msdos - 2 seconds - * vfat - 10 milliseconds - * atime - 24 hours (00:00:00 in local timezone) + * all times in root node are always 0 */ int fat_truncate_time(struct inode *inode, struct timespec64 *now, int flags) { @@ -312,25 +345,12 @@ int fat_truncate_time(struct inode *inod ts = current_time(inode); } - if (flags & S_ATIME) { - /* to localtime */ - time64_t seconds = now->tv_sec - fat_tz_offset(sbi); - s32 remainder; - - div_s64_rem(seconds, SECS_PER_DAY, &remainder); - /* to day boundary, and back to unix time */ - seconds = seconds + fat_tz_offset(sbi) - remainder; - - inode->i_atime = (struct timespec64){ seconds, 0 }; - } - if (flags & S_CTIME) { - if (sbi->options.isvfat) - inode->i_ctime = fat_timespec64_trunc_10ms(*now); - else - inode->i_ctime = fat_timespec64_trunc_2secs(*now); - } + if (flags & S_ATIME) + inode->i_atime = fat_truncate_atime(sbi, now); + if (flags & S_CTIME) + inode->i_ctime = fat_truncate_crtime(sbi, now); if (flags & S_MTIME) - inode->i_mtime = fat_timespec64_trunc_2secs(*now); + inode->i_mtime = fat_truncate_mtime(sbi, now); return 0; } _ Patches currently in -mm which might be from cccheng@synology.com are