s390/mm: Add mmap_assert_write_locked() check to crst_table_upgrade()

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Add mmap_assert_write_locked() check to crst_table_upgrade() in order to
verify that no concurrent page table upgrades of an mm can happen. This
allows to remove the VM_BUG_ON() check which checks for the potential
inconsistent result of concurrent updates.

Reviewed-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Heiko Carstens 2025-04-30 10:59:30 +02:00

parent de6b4f9901

commit f049a4f7ff

1 changed files with 2 additions and 7 deletions

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9

arch/s390/mm/pgalloc.c

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