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xfs: add a xfs_inode_buftarg helper

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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>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig
2019-10-24 22:25:38 -07:00
committed by Darrick J. Wong
parent 25a409572b
commit 30fa529e3b
8 changed files with 38 additions and 55 deletions
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fs/xfs/xfs_iops.c
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@@ -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