From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org, Theodore Ts'o <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Alexander Viro <viro@zeniv.linux.org.uk>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
linux-xfs@vger.kernel.org,
Matthew Wilcox <mawilcox@microsoft.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
stable@vger.kernel.org, Jan Kara <jack@suse.cz>,
hch@lst.de, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 02/12] dax: introduce IS_DEVDAX() and IS_FSDAX()
Date: Fri, 2 Mar 2018 23:53:16 +0100 [thread overview]
Message-ID: <20180302225316.GC31240@lst.de> (raw)
In-Reply-To: <151996282448.28483.10415125852182473579.stgit@dwillia2-desk3.amr.corp.intel.com>
> +static inline bool IS_DEVDAX(struct inode *inode)
> +{
> + if (!IS_ENABLED(CONFIG_DEV_DAX))
> + return false;
> + if ((inode->i_flags & S_DAX) == 0)
> + return false;
> + if (!S_ISCHR(inode->i_mode))
> + return false;
> + return true;
> +}
> +
> +static inline bool IS_FSDAX(struct inode *inode)
> +{
> + if (!IS_ENABLED(CONFIG_FS_DAX))
> + return false;
> + if ((inode->i_flags & S_DAX) == 0)
> + return false;
> + if (S_ISCHR(inode->i_mode))
> + return false;
> + return true;
Encoding the is char device or not thing here is just nasty. I think
this is going entirely in the wrong direction.
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next prev parent reply other threads:[~2018-03-02 22:53 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-02 3:53 [PATCH v5 00/12] vfio, dax: prevent long term filesystem-dax pins and other fixes Dan Williams
2018-03-02 3:53 ` [PATCH v5 01/12] dax: fix vma_is_fsdax() helper Dan Williams
2018-03-02 22:52 ` Christoph Hellwig
2018-03-02 3:53 ` [PATCH v5 02/12] dax: introduce IS_DEVDAX() and IS_FSDAX() Dan Williams
2018-03-02 17:45 ` Darrick J. Wong
2018-03-02 18:37 ` Dan Williams
2018-03-02 19:06 ` [PATCH v6] " Dan Williams
2018-03-02 19:58 ` Darrick J. Wong
2018-03-02 22:53 ` Christoph Hellwig [this message]
2018-03-02 3:53 ` [PATCH v5 03/12] ext2, dax: finish implementing dax_sem helpers Dan Williams
2018-03-02 3:53 ` [PATCH v5 04/12] ext2, dax: define ext2_dax_*() infrastructure in all cases Dan Williams
2018-03-02 3:54 ` [PATCH v5 05/12] ext4, dax: define ext4_dax_*() " Dan Williams
2018-03-02 3:54 ` [PATCH v5 06/12] ext2, dax: replace IS_DAX() with IS_FSDAX() Dan Williams
2018-03-02 3:54 ` [PATCH v5 07/12] ext4, " Dan Williams
2018-03-02 3:54 ` [PATCH v5 08/12] xfs, " Dan Williams
2018-03-02 17:46 ` Darrick J. Wong
2018-03-02 3:54 ` [PATCH v5 09/12] mm, dax: replace IS_DAX() with IS_DEVDAX() or IS_FSDAX() Dan Williams
2018-03-02 22:54 ` Christoph Hellwig
2018-03-02 3:54 ` [PATCH v5 10/12] fs, dax: kill IS_DAX() Dan Williams
2018-03-02 3:54 ` [PATCH v5 11/12] dax: fix S_DAX definition Dan Williams
2018-03-02 3:54 ` [PATCH v5 12/12] vfio: disable filesystem-dax page pinning Dan Williams
2018-03-02 22:10 ` [PATCH v5 00/12] vfio, dax: prevent long term filesystem-dax pins and other fixes Christoph Hellwig
2018-03-02 22:21 ` Dan Williams
2018-03-02 22:57 ` Christoph Hellwig
2018-03-02 23:49 ` Dan Williams
2018-03-03 2:19 ` Dan Williams
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