tree ab508ad6c442fa52b4b59a27edb5084279dbb6d9
parent d25522f10cfa342a20867086a516c45c87b0877c
author Darrick J. Wong <darrick.wong@oracle.com> 1527710625 -0700
committer Darrick J. Wong <darrick.wong@oracle.com> 1527782313 -0700

fs: allow per-device dax status checking for filesystems

Change bdev_dax_supported so it takes a bdev parameter.  This enables
multi-device filesystems like xfs to check that a dax device can work for
the particular filesystem.  Once that's in place, actually fix all the
parts of XFS where we need to be able to distinguish between datadev and
rtdev.

This patch fixes the problem where we screw up the dax support checking
in xfs if the datadev and rtdev have different dax capabilities.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[rez: Re-added __bdev_dax_supported() for !CONFIG_FS_DAX cases]
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>