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From: Eric Biggers <ebiggers@kernel.org>
To: Jan Kara <jack@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-ext4@vger.kernel.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [f2fs-dev] [PATCH v2 00/12] lazytime fix and cleanups
Date: Mon, 11 Jan 2021 12:44:35 -0800	[thread overview]
Message-ID: <X/y4s12YrXiUwWfN@sol.localdomain> (raw)
In-Reply-To: <20210111151517.GK18475@quack2.suse.cz>

On Mon, Jan 11, 2021 at 04:15:17PM +0100, Jan Kara wrote:
> Hi!
> 
> On Fri 08-01-21 23:58:51, Eric Biggers wrote:
> > Hello,
> > 
> > Patch 1 fixes a bug in how __writeback_single_inode() handles lazytime
> > expirations.  I originally reported this last year
> > (https://lore.kernel.org/r/20200306004555.GB225345@gmail.com) because it
> > causes the FS_IOC_REMOVE_ENCRYPTION_KEY ioctl to not work properly, as
> > the bug causes inodes to remain dirty after a sync.
> > 
> > It also turns out that lazytime on XFS is partially broken because it
> > doesn't actually write timestamps to disk after a sync() or after
> > dirtytime_expire_interval.  This is fixed by the same fix.
> > 
> > This supersedes previously proposed fixes, including
> > https://lore.kernel.org/r/20200307020043.60118-1-tytso@mit.edu and
> > https://lore.kernel.org/r/20200325122825.1086872-3-hch@lst.de from last
> > year (which had some issues and didn't fix the XFS bug), and v1 of this
> > patchset which took a different approach
> > (https://lore.kernel.org/r/20210105005452.92521-1-ebiggers@kernel.org).
> > 
> > Patches 2-12 then clean up various things related to lazytime and
> > writeback, such as clarifying the semantics of ->dirty_inode() and the
> > inode dirty flags, and improving comments.  Most of these patches could
> > be applied independently if needed.
> > 
> > This patchset applies to v5.11-rc2.
> 
> The series look good to me. How do you plan to merge it (after resolving
> Christoph's remarks)? I guess either Ted can take it through the ext4 tree
> or I can take it through my tree...
> 

I think taking it through your tree would be best, unless Al or Ted wants to
take it.

I'll probably separate out
"xfs: remove a stale comment from xfs_file_aio_write_checks()",
since it isn't really related anymore and could go in through the XFS tree.

- Eric


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  reply	other threads:[~2021-01-11 20:45 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-09  7:58 [f2fs-dev] [PATCH v2 00/12] lazytime fix and cleanups Eric Biggers
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 01/12] fs: fix lazytime expiration handling in __writeback_single_inode() Eric Biggers
2021-01-11 10:48   ` Christoph Hellwig
2021-01-11 14:46   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 02/12] fs: correctly document the inode dirty flags Eric Biggers
2021-01-11 14:48   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 03/12] fs: only specify I_DIRTY_TIME when needed in generic_update_time() Eric Biggers
2021-01-11 14:50   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 04/12] fat: only specify I_DIRTY_TIME when needed in fat_update_time() Eric Biggers
2021-01-11 10:52   ` Christoph Hellwig
2021-01-11 19:50     ` Eric Biggers
2021-01-12  5:21       ` Dave Chinner
2021-01-12 13:23       ` Christoph Hellwig
2021-01-11 14:52   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 05/12] fs: don't call ->dirty_inode for lazytime timestamp updates Eric Biggers
2021-01-11 14:54   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 06/12] fs: pass only I_DIRTY_INODE flags to ->dirty_inode Eric Biggers
2021-01-11 14:56   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 07/12] fs: clean up __mark_inode_dirty() a bit Eric Biggers
2021-01-11 14:59   ` Jan Kara
2021-01-09  7:58 ` [f2fs-dev] [PATCH v2 08/12] fs: drop redundant check from __writeback_single_inode() Eric Biggers
2021-01-11 10:52   ` Christoph Hellwig
2021-01-11 15:00   ` Jan Kara
2021-01-09  7:59 ` [f2fs-dev] [PATCH v2 09/12] fs: improve comments for writeback_single_inode() Eric Biggers
2021-01-11 10:53   ` Christoph Hellwig
2021-01-11 15:05   ` Jan Kara
2021-01-09  7:59 ` [f2fs-dev] [PATCH v2 10/12] gfs2: don't worry about I_DIRTY_TIME in gfs2_fsync() Eric Biggers
2021-01-11 15:06   ` Jan Kara
2021-01-09  7:59 ` [f2fs-dev] [PATCH v2 11/12] ext4: simplify i_state checks in __ext4_update_other_inode_time() Eric Biggers
2021-01-11 10:53   ` Christoph Hellwig
2021-01-11 20:23     ` Eric Biggers
2021-01-12 13:25       ` Christoph Hellwig
2021-02-03  5:16         ` Theodore Ts'o
2021-01-11 15:11   ` Jan Kara
2021-01-09  7:59 ` [f2fs-dev] [PATCH v2 12/12] xfs: remove a stale comment from xfs_file_aio_write_checks() Eric Biggers
2021-01-12 17:31   ` Darrick J. Wong
2021-01-11 15:15 ` [f2fs-dev] [PATCH v2 00/12] lazytime fix and cleanups Jan Kara
2021-01-11 20:44   ` Eric Biggers [this message]
2021-02-03  5:11     ` Theodore Ts'o
2021-02-03  5:22       ` Eric Biggers
2021-02-03 15:49         ` Theodore Ts'o

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