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From: Matthew Wilcox <willy@infradead.org>
To: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Cc: hch@infradead.org, darrick.wong@oracle.com,
	linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, riteshh@linux.ibm.com
Subject: Re: [PATCH] iomap: Fix the write_count in iomap_add_to_ioend().
Date: Fri, 21 Aug 2020 14:31:50 +0100	[thread overview]
Message-ID: <20200821133150.GT17456@casper.infradead.org> (raw)
In-Reply-To: <20200819102841.481461-1-anju@linux.vnet.ibm.com>

On Wed, Aug 19, 2020 at 03:58:41PM +0530, Anju T Sudhakar wrote:
> __bio_try_merge_page() may return same_page = 1 and merged = 0. 
> This could happen when bio->bi_iter.bi_size + len > UINT_MAX. 
> Handle this case in iomap_add_to_ioend() by incrementing write_count.

One of the patches I have pending ignores same_page by just using the
write_count as a byte count instead of a segment count.  It's currently
mixed into this patch but needs to be separated.

http://git.infradead.org/users/willy/pagecache.git/commitdiff/0186d1dde949a458584c56b706fa8dfd252466ff

(another patch does the same thing to the read count).

      parent reply	other threads:[~2020-08-21 13:32 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19 10:28 Anju T Sudhakar
2020-08-20 23:11 ` Dave Chinner
2020-08-21  4:45   ` Ritesh Harjani
2020-08-21  6:00     ` Christoph Hellwig
2020-08-21  9:09       ` Ritesh Harjani
2020-08-21 21:53     ` Dave Chinner
2020-08-22 13:13       ` Christoph Hellwig
2020-08-24 14:28         ` Brian Foster
2020-08-24 15:04           ` Christoph Hellwig
2020-08-24 15:48             ` Brian Foster
2020-08-25  0:42               ` Dave Chinner
2020-08-25 14:49                 ` Brian Foster
2020-08-31  4:01                   ` Ming Lei
2020-08-31 14:35                     ` Brian Foster
2020-09-16  0:12                   ` Darrick J. Wong
2020-09-16  8:45                     ` Christoph Hellwig
2020-09-16 13:07                       ` Brian Foster
2020-09-17  8:04                         ` Christoph Hellwig
2020-09-17 10:42                           ` Brian Foster
2020-09-17 14:48                             ` Christoph Hellwig
2020-09-17 21:33                               ` Darrick J. Wong
2020-09-17 23:13                           ` Ming Lei
2020-08-21  6:01   ` Christoph Hellwig
2020-08-21  6:07 ` Christoph Hellwig
2020-08-21  8:53   ` Ritesh Harjani
2020-08-21 14:49   ` Jens Axboe
2020-08-21 13:31 ` Matthew Wilcox [this message]

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