diff mbox series

[8/9] xfs: factor out a xfs_buftarg_is_dax helper

Message ID 20210823123516.969486-9-hch@lst.de (mailing list archive)
State Superseded
Headers show
Series [1/9] fsdax: improve the FS_DAX Kconfig description and help text | expand

Commit Message

Christoph Hellwig Aug. 23, 2021, 12:35 p.m. UTC 
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_super.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

Comments

Dan Williams Aug. 23, 2021, 9:20 p.m. UTC | #1 
On Mon, Aug 23, 2021 at 5:44 AM Christoph Hellwig <hch@lst.de> wrote:
>

I wouldn't mind adding:

"In support of a future change to kill bdev_dax_supported() first move
its usage to a helper."

...but either way:

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
diff mbox series

Patch

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 2c9e26a44546..5a89bf601d97 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -314,6 +314,14 @@  xfs_set_inode_alloc(
 	return (mp->m_flags & XFS_MOUNT_32BITINODES) ? maxagi : agcount;
 }
 
+static bool
+xfs_buftarg_is_dax(
+	struct super_block	*sb,
+	struct xfs_buftarg	*bt)
+{
+	return bdev_dax_supported(bt->bt_bdev, sb->s_blocksize);
+}
+
 STATIC int
 xfs_blkdev_get(
 	xfs_mount_t		*mp,
@@ -1549,11 +1557,10 @@  xfs_fs_fill_super(
 		xfs_warn(mp,
 		"DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
 
-		datadev_is_dax = bdev_dax_supported(mp->m_ddev_targp->bt_bdev,
-			sb->s_blocksize);
+		datadev_is_dax = xfs_buftarg_is_dax(sb, mp->m_ddev_targp);
 		if (mp->m_rtdev_targp)
-			rtdev_is_dax = bdev_dax_supported(
-				mp->m_rtdev_targp->bt_bdev, sb->s_blocksize);
+			rtdev_is_dax = xfs_buftarg_is_dax(sb,
+						mp->m_rtdev_targp);
 		if (!rtdev_is_dax && !datadev_is_dax) {
 			xfs_alert(mp,
 			"DAX unsupported by block device. Turning off DAX.");