s390/mm: correct pgtable_bytes on page table downgrade
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 27 Nov 2018 13:04:04 +0000 (14:04 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 27 Nov 2018 13:07:12 +0000 (14:07 +0100)
commit814cedbc0b78d75e335c96da9b9391142eab5600
tree62be82c7ba87efd2d8a9669be412c52c6eb71c75
parent104f708fd1241b22f808bdf066ab67dc5a051de5
s390/mm: correct pgtable_bytes on page table downgrade

The downgrade of a page table from 3 levels to 2 levels for a 31-bit compat
process removes a pmd table which has to be counted against pgtable_bytes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/mm/pgalloc.c