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From: Jan Kara <jack@suse.cz>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org,
	Matthew Wilcox <mawilcox@microsoft.com>,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	linux-mm@kvack.org, Jan Kara <jack@suse.com>,
	linux-fsdevel@vger.kernel.org,
	Ross Zwisler <ross.zwisler@linux.intel.com>
Subject: Re: [PATCH v4 09/12] mm, dax: replace IS_DAX() with IS_DEVDAX() or IS_FSDAX()
Date: Tue, 27 Feb 2018 18:05:59 +0100	[thread overview]
Message-ID: <20180227170559.o2uldn4t6wypfgic@quack2.suse.cz> (raw)
In-Reply-To: <151970524289.26729.18096955322602992171.stgit@dwillia2-desk3.amr.corp.intel.com>

On Mon 26-02-18 20:20:42, Dan Williams wrote:
> In preparation for fixing the broken definition of S_DAX in the
> CONFIG_FS_DAX=n + CONFIG_DEV_DAX=y case, convert all IS_DAX() usages to
> use explicit tests for the DEVDAX and FSDAX sub-cases of DAX
> functionality.
> 
> Cc: Jan Kara <jack@suse.com>
> Cc: Matthew Wilcox <mawilcox@microsoft.com>
> Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
> Cc: <stable@vger.kernel.org>
> Fixes: dee410792419 ("/dev/dax, core: file operations and dax-mmap")
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Just one nit below. With that fixed you can add:

Reviewed-by: Jan Kara <jack@suse.cz>

> @@ -3208,21 +3208,19 @@ static inline bool io_is_direct(struct file *filp)
>  
>  static inline bool vma_is_dax(struct vm_area_struct *vma)
>  {
> -	return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);
> +	struct inode *inode;
> +
> +	if (!vma->vm_file)
> +		return false;
> +	inode = vma->vm_file->f_mapping->host;

When changing this, use file_inode() here as well?

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

  reply	other threads:[~2018-02-27 17:06 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-27  4:19 [PATCH v4 00/12] vfio, dax: prevent long term filesystem-dax pins and other fixes Dan Williams
2018-02-27  4:20 ` [PATCH v4 01/12] dax: fix vma_is_fsdax() helper Dan Williams
2018-02-27  4:20 ` [PATCH v4 02/12] dax: introduce IS_DEVDAX() and IS_FSDAX() Dan Williams
2018-02-27 16:54   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 03/12] ext2, dax: finish implementing dax_sem helpers Dan Williams
2018-02-27 17:00   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 04/12] ext2, dax: define ext2_dax_*() infrastructure in all cases Dan Williams
2018-02-27 17:01   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 05/12] ext4, dax: define ext4_dax_*() " Dan Williams
2018-02-27 17:01   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 06/12] ext2, dax: replace IS_DAX() with IS_FSDAX() Dan Williams
2018-02-27 17:02   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 07/12] ext4, " Dan Williams
2018-02-27 17:02   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 08/12] xfs, " Dan Williams
2018-02-27 17:03   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 09/12] mm, dax: replace IS_DAX() with IS_DEVDAX() or IS_FSDAX() Dan Williams
2018-02-27 17:05   ` Jan Kara [this message]
2018-02-27  4:20 ` [PATCH v4 10/12] fs, dax: kill IS_DAX() Dan Williams
2018-02-27 17:06   ` Jan Kara
2018-02-27  4:20 ` [PATCH v4 11/12] dax: fix S_DAX definition Dan Williams
2018-02-27  4:20 ` [PATCH v4 12/12] vfio: disable filesystem-dax page pinning Dan Williams
2018-02-27 22:23 ` [PATCH v4 00/12] vfio, dax: prevent long term filesystem-dax pins and other fixes Dave Chinner

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