From: Christoph Hellwig <hch@infradead.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: Ritesh Harjani <ritesh.list@gmail.com>,
"Darrick J. Wong" <djwong@kernel.org>,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org,
Ojaswin Mujoo <ojaswin@linux.ibm.com>, Jan Kara <jack@suse.cz>
Subject: Re: [RFCv3 7/7] iomap: Optimize data access patterns for filesystems with indirect mappings
Date: Fri, 26 Apr 2024 21:54:46 -0700 [thread overview]
Message-ID: <ZiyFFsPlgODpc-e3@infradead.org> (raw)
In-Reply-To: <Ziv-U8-Rt9md-Npv@casper.infradead.org>
On Fri, Apr 26, 2024 at 08:19:47PM +0100, Matthew Wilcox wrote:
> > ...One small problem which I see with this approach is - we might have
> > some non-zero value in ifs->r_b_p when ifs_free() gets called and it
> > might give a warning of non-zero ifs->r_b_p, because we updated
> > ifs->r_b_p during writes to a non-zero value, but the reads
> > never happend. Then during a call to ->release_folio, it will complain
> > of a non-zero ifs->r_b_p.
>
> Yes, we'll have to remove that assertion. I don't think that's a
> problem, do you?
Or refine it, as the parts not read shoud not be uptodate either?
Either way I had another idea to simplify things a bit, but this might
end up beeing even simpler, so I'll stop the hacking on my version
for now.
next prev parent reply other threads:[~2024-04-27 4:54 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 13:28 [RFCv3 0/7] ext2 iomap changes and iomap improvements Ritesh Harjani (IBM)
2024-04-25 13:28 ` [RFCv3 1/7] ext2: Remove comment related to journal handle Ritesh Harjani (IBM)
2024-04-26 15:21 ` Darrick J. Wong
2024-04-25 13:28 ` [RFCv3 2/7] ext2: Convert ext2 regular file buffered I/O to use iomap Ritesh Harjani (IBM)
2024-04-26 15:29 ` Darrick J. Wong
2024-04-25 13:28 ` [RFCv3 3/7] ext2: Enable large folio support Ritesh Harjani (IBM)
2024-04-26 15:30 ` Darrick J. Wong
2024-04-25 13:28 ` [RFCv3 4/7] ext2: Implement seq counter for validating cached iomap Ritesh Harjani (IBM)
2024-04-26 15:41 ` Darrick J. Wong
2024-05-12 13:20 ` Jan Kara
2024-04-25 13:28 ` [RFCv3 5/7] iomap: Fix iomap_adjust_read_range for plen calculation Ritesh Harjani (IBM)
2024-04-26 6:49 ` Christoph Hellwig
2024-04-26 8:52 ` Ritesh Harjani
2024-04-26 15:43 ` Darrick J. Wong
2024-04-25 13:28 ` [RFCv3 6/7] iomap: Optimize iomap_read_folio Ritesh Harjani (IBM)
2024-04-25 13:53 ` Matthew Wilcox
2024-04-26 6:53 ` Christoph Hellwig
2024-04-26 8:50 ` Ritesh Harjani
2024-04-27 4:44 ` Christoph Hellwig
2024-04-25 13:28 ` [RFCv3 7/7] iomap: Optimize data access patterns for filesystems with indirect mappings Ritesh Harjani (IBM)
2024-04-26 16:24 ` Darrick J. Wong
2024-04-26 17:17 ` Ritesh Harjani
2024-04-26 17:25 ` Ritesh Harjani
2024-04-26 17:37 ` Matthew Wilcox
2024-04-26 17:55 ` Ritesh Harjani
2024-04-26 18:13 ` Matthew Wilcox
2024-04-26 18:57 ` Ritesh Harjani
2024-04-26 19:19 ` Matthew Wilcox
2024-04-27 4:54 ` Christoph Hellwig [this message]
2024-04-27 6:03 ` Ritesh Harjani
2024-04-27 4:47 ` Christoph Hellwig
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