mm/khugepaged: remove redundant pmd_devmap() check

The pmd_devmap() check in check_pmd_state() is redundant because the only
user of pmd_devmap were device dax and fs dax.  However all callers of
check_pmd_state() first call thp_vma_allowable_order() to check if the vma
should be scanned.  Except when called from a page fault this always
returns 0 for dax vma's, hence we would never expect to see a pmd_devmap
entry.

Link: https://lkml.kernel.org/r/a68175fd3a37e9b72cc82c1d63fd8b69691a85b5.1750323463.git-series.apopple@nvidia.com
Signed-off-by: Alistair Popple <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Björn Töpel <[email protected]>
Cc: Björn Töpel <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chunyan Zhang <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Deepak Gupta <[email protected]>
Cc: Gerald Schaefer <[email protected]>
Cc: Inki Dae <[email protected]>
Cc: John Groves <[email protected]>
Cc: John Hubbard <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions