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From: Matthew Wilcox <willy@infradead.org>
To: Jan Kara <jack@suse.cz>
Cc: linux-fsdevel@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>,
	Dave Chinner <david@fromorbit.com>,
	ceph-devel@vger.kernel.org, Chao Yu <yuchao0@huawei.com>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	"Darrick J. Wong" <darrick.wong@oracle.com>,
	Jaegeuk Kim <jaegeuk@kernel.org>,
	Jeff Layton <jlayton@kernel.org>,
	Johannes Thumshirn <jth@kernel.org>,
	linux-cifs@vger.kernel.org, linux-ext4@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net, linux-mm@kvack.org,
	linux-xfs@vger.kernel.org, Miklos Szeredi <miklos@szeredi.hu>,
	Steve French <sfrench@samba.org>, Ted Tso <tytso@mit.edu>
Subject: Re: [PATCH 03/11] mm: Protect operations adding pages to page cache with invalidate_lock
Date: Wed, 12 May 2021 15:20:44 +0100	[thread overview]
Message-ID: <YJvkPEAdVhM9JsbN@casper.infradead.org> (raw)
In-Reply-To: <20210512134631.4053-3-jack@suse.cz>

On Wed, May 12, 2021 at 03:46:11PM +0200, Jan Kara wrote:

> diff --git a/mm/truncate.c b/mm/truncate.c
> index 57a618c4a0d6..93bde2741e0e 100644
> --- a/mm/truncate.c
> +++ b/mm/truncate.c
> @@ -415,7 +415,7 @@ EXPORT_SYMBOL(truncate_inode_pages_range);
>   * @mapping: mapping to truncate
>   * @lstart: offset from which to truncate
>   *
> - * Called under (and serialised by) inode->i_rwsem.
> + * Called under (and serialised by) inode->i_rwsem and inode->i_mapping_rwsem.

mapping->invalidate_lock, surely?  And could we ask lockdep to assert
this for us instead of just a comment?

>   *
>   * Note: When this function returns, there can be a page in the process of
>   * deletion (inside __delete_from_page_cache()) in the specified range.  Thus
> -- 
> 2.26.2
> 
> 

  reply	other threads:[~2021-05-12 14:21 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-12 13:46 [PATCH 0/11 v5] fs: Hole punch vs page cache filling races Jan Kara
2021-05-12 13:46 ` [PATCH 01/11] mm: Fix comments mentioning i_mutex Jan Kara
2021-05-12 13:46 ` [PATCH 02/11] documentation: Sync file_operations members with reality Jan Kara
2021-05-12 13:46 ` [PATCH 03/11] mm: Protect operations adding pages to page cache with invalidate_lock Jan Kara
2021-05-12 14:20   ` Matthew Wilcox [this message]
2021-05-13 17:49     ` Jan Kara
2021-05-12 14:40   ` Matthew Wilcox
2021-05-13 19:01     ` Jan Kara
2021-05-13 19:38       ` Matthew Wilcox
2021-05-14 11:07         ` Jan Kara
2021-05-12 15:23   ` Darrick J. Wong
2021-05-13 17:44     ` Jan Kara
2021-05-13 18:52       ` Darrick J. Wong
2021-05-13 23:19         ` Dave Chinner
2021-05-14 16:17           ` Darrick J. Wong
2021-05-17 11:21             ` Jan Kara
2021-05-18 22:36             ` Dave Chinner
2021-05-19 10:57               ` Jan Kara
2021-05-12 13:46 ` [PATCH 04/11] ext4: Convert to use mapping->invalidate_lock Jan Kara
2021-05-12 13:46 ` [PATCH 05/11] ext2: Convert to using invalidate_lock Jan Kara
2021-05-12 13:46 ` [PATCH 06/11] xfs: Convert to use invalidate_lock Jan Kara
2021-05-12 13:46 ` [PATCH 07/11] zonefs: Convert to using invalidate_lock Jan Kara
2021-05-13  0:34   ` Damien Le Moal
2021-05-12 13:46 ` [PATCH 08/11] f2fs: " Jan Kara
2021-05-12 13:46 ` [PATCH 09/11] fuse: " Jan Kara
2021-05-12 13:46 ` [PATCH 10/11] ceph: Fix race between hole punch and page fault Jan Kara
2021-05-12 15:19   ` Jeff Layton
2021-05-12 13:46 ` [PATCH 11/11] cifs: " Jan Kara

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