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s390/mm: use VM_BUG_ON in crst_table_[upgrade|downgrade]

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The BUG_ON in crst_table_[upgrade|downgrade] is a debugging aid,
replace it with VM_BUG_ON.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2017-08-31 13:18:22 +02:00
parent e7d0c41ecc
commit 2fc4876ea8
1 changed files with 2 additions and 2 deletions
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4
arch/s390/mm/pgalloc.c
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@ -83,7 +83,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long end)
int rc, notify;
/* upgrade should only happen from 3 to 4, 3 to 5, or 4 to 5 levels */
BUG_ON(mm->context.asce_limit < _REGION2_SIZE);
VM_BUG_ON(mm->context.asce_limit < _REGION2_SIZE);
if (end >= TASK_SIZE_MAX)
return -ENOMEM;
rc = 0;
@ -124,7 +124,7 @@ void crst_table_downgrade(struct mm_struct *mm)
pgd_t *pgd;
/* downgrade should only happen from 3 to 2 levels (compat only) */
BUG_ON(mm->context.asce_limit != _REGION2_SIZE);
VM_BUG_ON(mm->context.asce_limit != _REGION2_SIZE);
if (current->active_mm == mm) {
clear_user_asce();