From: Jaegeuk Kim <jaegeuk@kernel.org> To: Chao Yu <chao@kernel.org> Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: Re: [f2fs-dev] [PATCH] f2fs: don't ignore writing pages on fsync during checkpoint=disable Date: Tue, 24 Aug 2021 10:09:42 -0700 [thread overview] Message-ID: <YSUn1j22s/kc+hWS@google.com> (raw) In-Reply-To: <baa8a361-1a22-76a0-423d-4378178f7073@kernel.org> On 08/24, Chao Yu wrote: > On 2021/8/24 1:01, Jaegeuk Kim wrote: > > We must flush dirty pages when calling fsync() during checkpoint=disable. > > Returning zero makes inode being clear, which fails to flush them when > > enabling checkpoint back even by sync_inodes_sb(). > > Without this patch, file can be persisted via checkpoint=enable as well, my > testcase: > > - mount -t f2fs -o checkpoint=disable,checkpoint_nomerge /dev/pmem0 /mnt/f2fs/ > - cp file /mnt/f2fs/ > - xfs_io /mnt/f2fs/file -c "fdatasync" > - mount -o remount,checkpoint=enable /dev/pmem0 /mnt/f2fs/ > - umount /mnt/f2fs > - mount /dev/pmem0 /mnt/f2fs > - md5sum file /mnt/f2fs/file > chksum values are the same. > > Am I missing something? I'm trying to address one subtle issue where a file has only NEW_ADDR by the checkpoint=disable test. I don't think this hurts anything but can see some mitigation of the issue. > > Thanks, _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
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From: Jaegeuk Kim <jaegeuk@kernel.org> To: Chao Yu <chao@kernel.org> Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: Re: [f2fs-dev] [PATCH] f2fs: don't ignore writing pages on fsync during checkpoint=disable Date: Tue, 24 Aug 2021 10:09:42 -0700 [thread overview] Message-ID: <YSUn1j22s/kc+hWS@google.com> (raw) In-Reply-To: <baa8a361-1a22-76a0-423d-4378178f7073@kernel.org> On 08/24, Chao Yu wrote: > On 2021/8/24 1:01, Jaegeuk Kim wrote: > > We must flush dirty pages when calling fsync() during checkpoint=disable. > > Returning zero makes inode being clear, which fails to flush them when > > enabling checkpoint back even by sync_inodes_sb(). > > Without this patch, file can be persisted via checkpoint=enable as well, my > testcase: > > - mount -t f2fs -o checkpoint=disable,checkpoint_nomerge /dev/pmem0 /mnt/f2fs/ > - cp file /mnt/f2fs/ > - xfs_io /mnt/f2fs/file -c "fdatasync" > - mount -o remount,checkpoint=enable /dev/pmem0 /mnt/f2fs/ > - umount /mnt/f2fs > - mount /dev/pmem0 /mnt/f2fs > - md5sum file /mnt/f2fs/file > chksum values are the same. > > Am I missing something? I'm trying to address one subtle issue where a file has only NEW_ADDR by the checkpoint=disable test. I don't think this hurts anything but can see some mitigation of the issue. > > Thanks,
next prev parent reply other threads:[~2021-08-24 17:09 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-23 17:01 [PATCH] f2fs: don't ignore writing pages on fsync during checkpoint=disable Jaegeuk Kim 2021-08-23 17:01 ` [f2fs-dev] " Jaegeuk Kim 2021-08-24 1:08 ` Chao Yu 2021-08-24 1:08 ` Chao Yu 2021-08-24 17:09 ` Jaegeuk Kim [this message] 2021-08-24 17:09 ` Jaegeuk Kim 2021-08-24 23:30 ` Chao Yu 2021-08-24 23:30 ` Chao Yu 2021-08-25 21:31 ` Jaegeuk Kim 2021-08-25 21:31 ` Jaegeuk Kim 2021-08-25 21:33 ` [PATCH v2] " Jaegeuk Kim 2021-08-25 21:33 ` [f2fs-dev] " Jaegeuk Kim 2021-08-26 0:16 ` Chao Yu 2021-08-26 0:16 ` Chao Yu 2021-08-26 16:52 ` [f2fs-dev] [PATCH v3] " Jaegeuk Kim 2021-08-26 16:52 ` Jaegeuk Kim 2021-08-27 14:36 ` Chao Yu 2021-08-27 14:36 ` Chao Yu
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