diff options
| author |   David Hildenbrand <david@redhat.com> | 2020-07-22 11:45:56 +0200 |
|---|---|---|
| committer |   Heiko Carstens <hca@linux.ibm.com> | 2020-07-27 10:34:03 +0200 |
| commit | f2057b4266a6be469ea0630971cf3cd933e42cce (patch) | |
| tree | 586d04fcf9fb067b5103c4755f19b30dc5705db5 /arch/s390 | |
| parent | s390/vmem: cleanup empty page tables (diff) | |
| download | wireguard-linux-f2057b4266a6be469ea0630971cf3cd933e42cce.tar.xz wireguard-linux-f2057b4266a6be469ea0630971cf3cd933e42cce.zip | |
s390/vmemmap: fallback to PTEs if mapping large PMD fails
Let's fallback to single pages if short on huge pages. No need to stop
memory hotplug.
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200722094558.9828-8-david@redhat.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/vmem.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index b831f9f9130a..e82a63de19db 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -180,10 +180,10 @@ static int __ref modify_pmd_table(pud_t *pud, unsigned long addr, */ new_page = vmemmap_alloc_block(PMD_SIZE, NUMA_NO_NODE); - if (!new_page) - goto out; - pmd_val(*pmd) = __pa(new_page) | prot; - continue; + if (new_page) { + pmd_val(*pmd) = __pa(new_page) | prot; + continue; + } } pte = vmem_pte_alloc(); if (!pte) |