diff options
Diffstat (limited to 'arch/s390/mm/pgtable.c')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 529a08838376..e4a4cefb92b3 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -256,6 +256,9 @@ void gmap_disable(struct gmap *gmap) } EXPORT_SYMBOL_GPL(gmap_disable); +/* + * gmap_alloc_table is assumed to be called with mmap_sem held + */ static int gmap_alloc_table(struct gmap *gmap, unsigned long *table, unsigned long init) { @@ -267,14 +270,12 @@ static int gmap_alloc_table(struct gmap *gmap, return -ENOMEM; new = (unsigned long *) page_to_phys(page); crst_table_init(new, init); - down_read(&gmap->mm->mmap_sem); if (*table & _REGION_ENTRY_INV) { list_add(&page->lru, &gmap->crst_list); *table = (unsigned long) new | _REGION_ENTRY_LENGTH | (*table & _REGION_ENTRY_TYPE_MASK); } else __free_pages(page, ALLOC_ORDER); - up_read(&gmap->mm->mmap_sem); return 0; } |