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From: Matthew Wilcox <willy@infradead.org>
To: David Howells <dhowells@redhat.com>
Cc: jlayton@kernel.org, linux-afs@lists.infradead.org,
	ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] afs: Fix afs_write_end() to handle short writes
Date: Mon, 14 Jun 2021 15:37:57 +0100	[thread overview]
Message-ID: <YMdpxbYafHnE0F8N@casper.infradead.org> (raw)
In-Reply-To: <162367682522.460125.5652091227576721609.stgit@warthog.procyon.org.uk>

On Mon, Jun 14, 2021 at 02:20:25PM +0100, David Howells wrote:
> @@ -135,8 +145,6 @@ int afs_write_end(struct file *file, struct address_space *mapping,
>  		write_sequnlock(&vnode->cb_lock);
>  	}
>  
> -	ASSERT(PageUptodate(page));
> -
>  	if (PagePrivate(page)) {
>  		priv = page_private(page);
>  		f = afs_page_dirty_from(page, priv);

Why are you removing this assertion?  Does AFS now support dirty,
partially-uptodate pages?  If so, a subsequent read() to that
page is going to need to be careful to only read the parts of the page
from the server that haven't been written ...

  parent reply	other threads:[~2021-06-14 14:38 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 13:20 [PATCH 1/3] afs: Handle len being extending over page end in write_begin/write_end David Howells
2021-06-14 13:20 ` [PATCH 2/3] afs: Fix afs_write_end() to handle short writes David Howells
2021-06-14 13:28   ` Matthew Wilcox
2021-06-14 13:37   ` David Howells
2021-06-14 13:46     ` Matthew Wilcox
2021-06-18  3:40       ` Al Viro
2021-06-14 14:04     ` David Howells
2021-06-14 14:37   ` Matthew Wilcox [this message]
2021-06-14 15:38   ` David Howells
2021-06-14 15:43     ` Matthew Wilcox
2021-06-14 21:11     ` David Howells
2021-06-14 13:20 ` [PATCH 3/3] netfs: fix test for whether we can skip read when writing beyond EOF David Howells
2021-06-15 17:01   ` Jeff Layton
2021-06-14 13:33 ` David Howells
2021-06-17  7:43 ` [PATCH 1/3] afs: Handle len being extending over page end in write_begin/write_end kernel test robot

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