cleanup buftarg lookup

cleanup buftarg lookup

[Christoph Hellwig]

Hi all,

this series merges our two helpers to look up the data device for a
given file, and uses that helper in a few more places.

[PATCH 1/3] xfs: add a xfs_inode_buftarg helper

[Christoph Hellwig]

Add a new xfs_inode_buftarg helper that gets the data I/O buftarg for a
given inode.  Replace the existing xfs_find_bdev_for_inode and
xfs_find_daxdev_for_inode helpers with this new general one and cleanup
some of the callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_aops.c      | 34 +++++-----------------------------
 fs/xfs/xfs_aops.h      |  3 ---
 fs/xfs/xfs_bmap_util.c | 15 ++++++++-------
 fs/xfs/xfs_file.c      | 14 +++++++-------
 fs/xfs/xfs_inode.h     |  7 +++++++
 fs/xfs/xfs_ioctl.c     |  7 +++----
 fs/xfs/xfs_iomap.c     | 11 +++++++----
 fs/xfs/xfs_iops.c      |  2 +-
 8 files changed, 38 insertions(+), 55 deletions(-)

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 5d3503f6412a..3a688eb5c5ae 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -30,32 +30,6 @@ XFS_WPC(struct iomap_writepage_ctx *ctx)
 	return container_of(ctx, struct xfs_writepage_ctx, ctx);
 }
 
-struct block_device *
-xfs_find_bdev_for_inode(
-	struct inode		*inode)
-{
-	struct xfs_inode	*ip = XFS_I(inode);
-	struct xfs_mount	*mp = ip->i_mount;
-
-	if (XFS_IS_REALTIME_INODE(ip))
-		return mp->m_rtdev_targp->bt_bdev;
-	else
-		return mp->m_ddev_targp->bt_bdev;
-}
-
-struct dax_device *
-xfs_find_daxdev_for_inode(
-	struct inode		*inode)
-{
-	struct xfs_inode	*ip = XFS_I(inode);
-	struct xfs_mount	*mp = ip->i_mount;
-
-	if (XFS_IS_REALTIME_INODE(ip))
-		return mp->m_rtdev_targp->bt_daxdev;
-	else
-		return mp->m_ddev_targp->bt_daxdev;
-}
-
 /*
  * Fast and loose check if this write could update the on-disk inode size.
  */
@@ -609,9 +583,11 @@ xfs_dax_writepages(
 	struct address_space	*mapping,
 	struct writeback_control *wbc)
 {
-	xfs_iflags_clear(XFS_I(mapping->host), XFS_ITRUNCATED);
+	struct xfs_inode	*ip = XFS_I(mapping->host);
+
+	xfs_iflags_clear(ip, XFS_ITRUNCATED);
 	return dax_writeback_mapping_range(mapping,
-			xfs_find_bdev_for_inode(mapping->host), wbc);
+			xfs_inode_buftarg(ip)->bt_bdev, wbc);
 }
 
 STATIC sector_t
@@ -661,7 +637,7 @@ xfs_iomap_swapfile_activate(
 	struct file			*swap_file,
 	sector_t			*span)
 {
-	sis->bdev = xfs_find_bdev_for_inode(file_inode(swap_file));
+	sis->bdev = xfs_inode_buftarg(XFS_I(file_inode(swap_file)))->bt_bdev;
 	return iomap_swapfile_activate(sis, swap_file, span,
 			&xfs_read_iomap_ops);
 }
diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
index 687b11f34fa2..e0bd68419764 100644
--- a/fs/xfs/xfs_aops.h
+++ b/fs/xfs/xfs_aops.h
@@ -11,7 +11,4 @@ extern const struct address_space_operations xfs_dax_aops;
 
 int	xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size);
 
-extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
-extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *);
-
 #endif /* __XFS_AOPS_H__ */
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 5d8632b7f549..9b0572a7b03a 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -53,15 +53,16 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
  */
 int
 xfs_zero_extent(
-	struct xfs_inode *ip,
-	xfs_fsblock_t	start_fsb,
-	xfs_off_t	count_fsb)
+	struct xfs_inode	*ip,
+	xfs_fsblock_t		start_fsb,
+	xfs_off_t		count_fsb)
 {
-	struct xfs_mount *mp = ip->i_mount;
-	xfs_daddr_t	sector = xfs_fsb_to_db(ip, start_fsb);
-	sector_t	block = XFS_BB_TO_FSBT(mp, sector);
+	struct xfs_mount	*mp = ip->i_mount;
+	struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
+	xfs_daddr_t		sector = xfs_fsb_to_db(ip, start_fsb);
+	sector_t		block = XFS_BB_TO_FSBT(mp, sector);
 
-	return blkdev_issue_zeroout(xfs_find_bdev_for_inode(VFS_I(ip)),
+	return blkdev_issue_zeroout(target->bt_bdev,
 		block << (mp->m_super->s_blocksize_bits - 9),
 		count_fsb << (mp->m_super->s_blocksize_bits - 9),
 		GFP_NOFS, 0);
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 24659667d5cb..ee4ebb7904f6 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1229,22 +1229,22 @@ static const struct vm_operations_struct xfs_file_vm_ops = {
 
 STATIC int
 xfs_file_mmap(
-	struct file	*filp,
-	struct vm_area_struct *vma)
+	struct file		*file,
+	struct vm_area_struct	*vma)
 {
-	struct dax_device 	*dax_dev;
+	struct inode		*inode = file_inode(file);
+	struct xfs_buftarg	*target = xfs_inode_buftarg(XFS_I(inode));
 
-	dax_dev = xfs_find_daxdev_for_inode(file_inode(filp));
 	/*
 	 * We don't support synchronous mappings for non-DAX files and
 	 * for DAX files if underneath dax_device is not synchronous.
 	 */
-	if (!daxdev_mapping_supported(vma, dax_dev))
+	if (!daxdev_mapping_supported(vma, target->bt_daxdev))
 		return -EOPNOTSUPP;
 
-	file_accessed(filp);
+	file_accessed(file);
 	vma->vm_ops = &xfs_file_vm_ops;
-	if (IS_DAX(file_inode(filp)))
+	if (IS_DAX(inode))
 		vma->vm_flags |= VM_HUGEPAGE;
 	return 0;
 }
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 558173f95a03..bcfb35a9c5ca 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -219,6 +219,13 @@ static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip)
 	return ip->i_cowfp && ip->i_cowfp->if_bytes;
 }
 
+/*
+ * Return the buftarg used for data allocations on a given inode.
+ */
+#define xfs_inode_buftarg(ip) \
+	(XFS_IS_REALTIME_INODE(ip) ? \
+		(ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp)
+
 /*
  * In-core inode flags.
  */
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index d58f0d6a699e..b7b5c17131cd 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1311,10 +1311,9 @@ xfs_ioctl_setattr_dax_invalidate(
 	 * have to check the device for dax support or flush pagecache.
 	 */
 	if (fa->fsx_xflags & FS_XFLAG_DAX) {
-		if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
-			return -EINVAL;
-		if (!bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)),
-				sb->s_blocksize))
+		struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
+
+		if (!bdev_dax_supported(target->bt_bdev, sb->s_blocksize))
 			return -EINVAL;
 	}
 
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index bf0c7756ac90..c1063507e5fd 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -57,6 +57,7 @@ xfs_bmbt_to_iomap(
 	u16			flags)
 {
 	struct xfs_mount	*mp = ip->i_mount;
+	struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
 
 	if (unlikely(!xfs_valid_startblock(ip, imap->br_startblock)))
 		return xfs_alert_fsblock_zero(ip, imap);
@@ -77,8 +78,8 @@ xfs_bmbt_to_iomap(
 	}
 	iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
 	iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
-	iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
-	iomap->dax_dev = xfs_find_daxdev_for_inode(VFS_I(ip));
+	iomap->bdev = target->bt_bdev;
+	iomap->dax_dev = target->bt_daxdev;
 	iomap->flags = flags;
 
 	if (xfs_ipincount(ip) &&
@@ -94,12 +95,14 @@ xfs_hole_to_iomap(
 	xfs_fileoff_t		offset_fsb,
 	xfs_fileoff_t		end_fsb)
 {
+	struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
+
 	iomap->addr = IOMAP_NULL_ADDR;
 	iomap->type = IOMAP_HOLE;
 	iomap->offset = XFS_FSB_TO_B(ip->i_mount, offset_fsb);
 	iomap->length = XFS_FSB_TO_B(ip->i_mount, end_fsb - offset_fsb);
-	iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
-	iomap->dax_dev = xfs_find_daxdev_for_inode(VFS_I(ip));
+	iomap->bdev = target->bt_bdev;
+	iomap->dax_dev = target->bt_daxdev;
 }
 
 static inline xfs_fileoff_t
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 329a34af8e79..404f2dd58698 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1227,7 +1227,7 @@ xfs_inode_supports_dax(
 		return false;
 
 	/* Device has to support DAX too. */
-	return xfs_find_daxdev_for_inode(VFS_I(ip)) != NULL;
+	return xfs_inode_buftarg(ip)->bt_daxdev != NULL;
 }
 
 STATIC void
-- 
2.20.1

Re: [PATCH 1/3] xfs: add a xfs_inode_buftarg helper

[Darrick J. Wong]

On Fri, Oct 25, 2019 at 11:18:50AM +0900, Christoph Hellwig wrote:
> Add a new xfs_inode_buftarg helper that gets the data I/O buftarg for a
> given inode.  Replace the existing xfs_find_bdev_for_inode and
> xfs_find_daxdev_for_inode helpers with this new general one and cleanup
> some of the callers.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/xfs_aops.c      | 34 +++++-----------------------------
>  fs/xfs/xfs_aops.h      |  3 ---
>  fs/xfs/xfs_bmap_util.c | 15 ++++++++-------
>  fs/xfs/xfs_file.c      | 14 +++++++-------
>  fs/xfs/xfs_inode.h     |  7 +++++++
>  fs/xfs/xfs_ioctl.c     |  7 +++----
>  fs/xfs/xfs_iomap.c     | 11 +++++++----
>  fs/xfs/xfs_iops.c      |  2 +-
>  8 files changed, 38 insertions(+), 55 deletions(-)
> 
> diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
> index 5d3503f6412a..3a688eb5c5ae 100644
> --- a/fs/xfs/xfs_aops.c
> +++ b/fs/xfs/xfs_aops.c
> @@ -30,32 +30,6 @@ XFS_WPC(struct iomap_writepage_ctx *ctx)
>  	return container_of(ctx, struct xfs_writepage_ctx, ctx);
>  }
>  
> -struct block_device *
> -xfs_find_bdev_for_inode(
> -	struct inode		*inode)
> -{
> -	struct xfs_inode	*ip = XFS_I(inode);
> -	struct xfs_mount	*mp = ip->i_mount;
> -
> -	if (XFS_IS_REALTIME_INODE(ip))
> -		return mp->m_rtdev_targp->bt_bdev;
> -	else
> -		return mp->m_ddev_targp->bt_bdev;
> -}
> -
> -struct dax_device *
> -xfs_find_daxdev_for_inode(
> -	struct inode		*inode)
> -{
> -	struct xfs_inode	*ip = XFS_I(inode);
> -	struct xfs_mount	*mp = ip->i_mount;
> -
> -	if (XFS_IS_REALTIME_INODE(ip))
> -		return mp->m_rtdev_targp->bt_daxdev;
> -	else
> -		return mp->m_ddev_targp->bt_daxdev;
> -}
> -
>  /*
>   * Fast and loose check if this write could update the on-disk inode size.
>   */
> @@ -609,9 +583,11 @@ xfs_dax_writepages(
>  	struct address_space	*mapping,
>  	struct writeback_control *wbc)
>  {
> -	xfs_iflags_clear(XFS_I(mapping->host), XFS_ITRUNCATED);
> +	struct xfs_inode	*ip = XFS_I(mapping->host);
> +
> +	xfs_iflags_clear(ip, XFS_ITRUNCATED);
>  	return dax_writeback_mapping_range(mapping,
> -			xfs_find_bdev_for_inode(mapping->host), wbc);
> +			xfs_inode_buftarg(ip)->bt_bdev, wbc);
>  }
>  
>  STATIC sector_t
> @@ -661,7 +637,7 @@ xfs_iomap_swapfile_activate(
>  	struct file			*swap_file,
>  	sector_t			*span)
>  {
> -	sis->bdev = xfs_find_bdev_for_inode(file_inode(swap_file));
> +	sis->bdev = xfs_inode_buftarg(XFS_I(file_inode(swap_file)))->bt_bdev;
>  	return iomap_swapfile_activate(sis, swap_file, span,
>  			&xfs_read_iomap_ops);
>  }
> diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
> index 687b11f34fa2..e0bd68419764 100644
> --- a/fs/xfs/xfs_aops.h
> +++ b/fs/xfs/xfs_aops.h
> @@ -11,7 +11,4 @@ extern const struct address_space_operations xfs_dax_aops;
>  
>  int	xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size);
>  
> -extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
> -extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *);
> -
>  #endif /* __XFS_AOPS_H__ */
> diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
> index 5d8632b7f549..9b0572a7b03a 100644
> --- a/fs/xfs/xfs_bmap_util.c
> +++ b/fs/xfs/xfs_bmap_util.c
> @@ -53,15 +53,16 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
>   */
>  int
>  xfs_zero_extent(
> -	struct xfs_inode *ip,
> -	xfs_fsblock_t	start_fsb,
> -	xfs_off_t	count_fsb)
> +	struct xfs_inode	*ip,
> +	xfs_fsblock_t		start_fsb,
> +	xfs_off_t		count_fsb)
>  {
> -	struct xfs_mount *mp = ip->i_mount;
> -	xfs_daddr_t	sector = xfs_fsb_to_db(ip, start_fsb);
> -	sector_t	block = XFS_BB_TO_FSBT(mp, sector);
> +	struct xfs_mount	*mp = ip->i_mount;
> +	struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
> +	xfs_daddr_t		sector = xfs_fsb_to_db(ip, start_fsb);
> +	sector_t		block = XFS_BB_TO_FSBT(mp, sector);
>  
> -	return blkdev_issue_zeroout(xfs_find_bdev_for_inode(VFS_I(ip)),
> +	return blkdev_issue_zeroout(target->bt_bdev,
>  		block << (mp->m_super->s_blocksize_bits - 9),
>  		count_fsb << (mp->m_super->s_blocksize_bits - 9),
>  		GFP_NOFS, 0);
> diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
> index 24659667d5cb..ee4ebb7904f6 100644
> --- a/fs/xfs/xfs_file.c
> +++ b/fs/xfs/xfs_file.c
> @@ -1229,22 +1229,22 @@ static const struct vm_operations_struct xfs_file_vm_ops = {
>  
>  STATIC int
>  xfs_file_mmap(
> -	struct file	*filp,
> -	struct vm_area_struct *vma)
> +	struct file		*file,
> +	struct vm_area_struct	*vma)
>  {
> -	struct dax_device 	*dax_dev;
> +	struct inode		*inode = file_inode(file);
> +	struct xfs_buftarg	*target = xfs_inode_buftarg(XFS_I(inode));
>  
> -	dax_dev = xfs_find_daxdev_for_inode(file_inode(filp));
>  	/*
>  	 * We don't support synchronous mappings for non-DAX files and
>  	 * for DAX files if underneath dax_device is not synchronous.
>  	 */
> -	if (!daxdev_mapping_supported(vma, dax_dev))
> +	if (!daxdev_mapping_supported(vma, target->bt_daxdev))
>  		return -EOPNOTSUPP;
>  
> -	file_accessed(filp);
> +	file_accessed(file);
>  	vma->vm_ops = &xfs_file_vm_ops;
> -	if (IS_DAX(file_inode(filp)))
> +	if (IS_DAX(inode))
>  		vma->vm_flags |= VM_HUGEPAGE;
>  	return 0;
>  }
> diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
> index 558173f95a03..bcfb35a9c5ca 100644
> --- a/fs/xfs/xfs_inode.h
> +++ b/fs/xfs/xfs_inode.h
> @@ -219,6 +219,13 @@ static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip)
>  	return ip->i_cowfp && ip->i_cowfp->if_bytes;
>  }
>  
> +/*
> + * Return the buftarg used for data allocations on a given inode.
> + */
> +#define xfs_inode_buftarg(ip) \
> +	(XFS_IS_REALTIME_INODE(ip) ? \
> +		(ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp)
> +
>  /*
>   * In-core inode flags.
>   */
> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
> index d58f0d6a699e..b7b5c17131cd 100644
> --- a/fs/xfs/xfs_ioctl.c
> +++ b/fs/xfs/xfs_ioctl.c
> @@ -1311,10 +1311,9 @@ xfs_ioctl_setattr_dax_invalidate(
>  	 * have to check the device for dax support or flush pagecache.
>  	 */
>  	if (fa->fsx_xflags & FS_XFLAG_DAX) {
> -		if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
> -			return -EINVAL;

Um... why are we're removing this mode check?

--D

> -		if (!bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)),
> -				sb->s_blocksize))
> +		struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
> +
> +		if (!bdev_dax_supported(target->bt_bdev, sb->s_blocksize))
>  			return -EINVAL;
>  	}
>  
> diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
> index bf0c7756ac90..c1063507e5fd 100644
> --- a/fs/xfs/xfs_iomap.c
> +++ b/fs/xfs/xfs_iomap.c
> @@ -57,6 +57,7 @@ xfs_bmbt_to_iomap(
>  	u16			flags)
>  {
>  	struct xfs_mount	*mp = ip->i_mount;
> +	struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
>  
>  	if (unlikely(!xfs_valid_startblock(ip, imap->br_startblock)))
>  		return xfs_alert_fsblock_zero(ip, imap);
> @@ -77,8 +78,8 @@ xfs_bmbt_to_iomap(
>  	}
>  	iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
>  	iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
> -	iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
> -	iomap->dax_dev = xfs_find_daxdev_for_inode(VFS_I(ip));
> +	iomap->bdev = target->bt_bdev;
> +	iomap->dax_dev = target->bt_daxdev;
>  	iomap->flags = flags;
>  
>  	if (xfs_ipincount(ip) &&
> @@ -94,12 +95,14 @@ xfs_hole_to_iomap(
>  	xfs_fileoff_t		offset_fsb,
>  	xfs_fileoff_t		end_fsb)
>  {
> +	struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
> +
>  	iomap->addr = IOMAP_NULL_ADDR;
>  	iomap->type = IOMAP_HOLE;
>  	iomap->offset = XFS_FSB_TO_B(ip->i_mount, offset_fsb);
>  	iomap->length = XFS_FSB_TO_B(ip->i_mount, end_fsb - offset_fsb);
> -	iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
> -	iomap->dax_dev = xfs_find_daxdev_for_inode(VFS_I(ip));
> +	iomap->bdev = target->bt_bdev;
> +	iomap->dax_dev = target->bt_daxdev;
>  }
>  
>  static inline xfs_fileoff_t
> diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
> index 329a34af8e79..404f2dd58698 100644
> --- a/fs/xfs/xfs_iops.c
> +++ b/fs/xfs/xfs_iops.c
> @@ -1227,7 +1227,7 @@ xfs_inode_supports_dax(
>  		return false;
>  
>  	/* Device has to support DAX too. */
> -	return xfs_find_daxdev_for_inode(VFS_I(ip)) != NULL;
> +	return xfs_inode_buftarg(ip)->bt_daxdev != NULL;
>  }
>  
>  STATIC void
> -- 
> 2.20.1
> 

[PATCH 2/3] xfs: use xfs_inode_buftarg in xfs_file_dio_aio_write

[Christoph Hellwig]

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_file.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index ee4ebb7904f6..156238d5af19 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -487,8 +487,7 @@ xfs_file_dio_aio_write(
 	int			unaligned_io = 0;
 	int			iolock;
 	size_t			count = iov_iter_count(from);
-	struct xfs_buftarg      *target = XFS_IS_REALTIME_INODE(ip) ?
-					mp->m_rtdev_targp : mp->m_ddev_targp;
+	struct xfs_buftarg      *target = xfs_inode_buftarg(ip);
 
 	/* DIO must be aligned to device logical sector size */
 	if ((iocb->ki_pos | count) & target->bt_logical_sectormask)
-- 
2.20.1

Re: [PATCH 2/3] xfs: use xfs_inode_buftarg in xfs_file_dio_aio_write

[Darrick J. Wong]

On Fri, Oct 25, 2019 at 11:18:51AM +0900, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/xfs_file.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
> index ee4ebb7904f6..156238d5af19 100644
> --- a/fs/xfs/xfs_file.c
> +++ b/fs/xfs/xfs_file.c
> @@ -487,8 +487,7 @@ xfs_file_dio_aio_write(
>  	int			unaligned_io = 0;
>  	int			iolock;
>  	size_t			count = iov_iter_count(from);
> -	struct xfs_buftarg      *target = XFS_IS_REALTIME_INODE(ip) ?
> -					mp->m_rtdev_targp : mp->m_ddev_targp;
> +	struct xfs_buftarg      *target = xfs_inode_buftarg(ip);
>  
>  	/* DIO must be aligned to device logical sector size */
>  	if ((iocb->ki_pos | count) & target->bt_logical_sectormask)
> -- 
> 2.20.1
> 

[PATCH 3/3] xfs: use xfs_inode_buftarg in xfs_file_ioctl

[Christoph Hellwig]

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_ioctl.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index b7b5c17131cd..0fed56d3175c 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -2135,10 +2135,8 @@ xfs_file_ioctl(
 		return xfs_ioc_space(filp, cmd, &bf);
 	}
 	case XFS_IOC_DIOINFO: {
-		struct dioattr	da;
-		xfs_buftarg_t	*target =
-			XFS_IS_REALTIME_INODE(ip) ?
-			mp->m_rtdev_targp : mp->m_ddev_targp;
+		struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
+		struct dioattr		da;
 
 		da.d_mem =  da.d_miniosz = target->bt_logical_sectorsize;
 		da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
-- 
2.20.1

Re: [PATCH 3/3] xfs: use xfs_inode_buftarg in xfs_file_ioctl

[Darrick J. Wong]

On Fri, Oct 25, 2019 at 11:18:52AM +0900, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/xfs_ioctl.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
> index b7b5c17131cd..0fed56d3175c 100644
> --- a/fs/xfs/xfs_ioctl.c
> +++ b/fs/xfs/xfs_ioctl.c
> @@ -2135,10 +2135,8 @@ xfs_file_ioctl(
>  		return xfs_ioc_space(filp, cmd, &bf);
>  	}
>  	case XFS_IOC_DIOINFO: {
> -		struct dioattr	da;
> -		xfs_buftarg_t	*target =
> -			XFS_IS_REALTIME_INODE(ip) ?
> -			mp->m_rtdev_targp : mp->m_ddev_targp;
> +		struct xfs_buftarg	*target = xfs_inode_buftarg(ip);
> +		struct dioattr		da;
>  
>  		da.d_mem =  da.d_miniosz = target->bt_logical_sectorsize;
>  		da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
> -- 
> 2.20.1
>