diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/sys_ia64.c | 7 | ||||
| -rw-r--r-- | arch/ia64/mm/hugetlbpage.c | 8 | ||||
| -rw-r--r-- | arch/ia64/mm/init.c | 2 |
3 files changed, 16 insertions, 1 deletions
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c index 9ef62a3fbfa..2fcaa2051aa 100644 --- a/arch/ia64/kernel/sys_ia64.c +++ b/arch/ia64/kernel/sys_ia64.c @@ -33,6 +33,13 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len if (len > RGN_MAP_LIMIT) return -ENOMEM; + /* handle fixed mapping: prevent overlap with huge pages */ + if (flags & MAP_FIXED) { + if (is_hugepage_only_range(mm, addr, len)) + return -EINVAL; + return addr; + } + #ifdef CONFIG_HUGETLB_PAGE if (REGION_NUMBER(addr) == RGN_HPAGE) addr = 0; diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c index 0c7e94edc20..c7c90f4f429 100644 --- a/arch/ia64/mm/hugetlbpage.c +++ b/arch/ia64/mm/hugetlbpage.c @@ -148,6 +148,14 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u return -ENOMEM; if (len & ~HPAGE_MASK) return -EINVAL; + + /* Handle MAP_FIXED */ + if (flags & MAP_FIXED) { + if (prepare_hugepage_range(addr, len, pgoff)) + return -EINVAL; + return addr; + } + /* This code assumes that RGN_HPAGE != 0. */ if ((REGION_NUMBER(addr) != RGN_HPAGE) || (addr & (HPAGE_SIZE - 1))) addr = HPAGE_REGION_BASE; diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index 4f36987eea7..2da84111072 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -121,7 +121,7 @@ lazy_mmu_prot_update (pte_t pte) return; /* i-cache is already coherent with d-cache */ if (PageCompound(page)) { - order = (unsigned long) (page[1].lru.prev); + order = compound_order(page); flush_icache_range(addr, addr + (1UL << order << PAGE_SHIFT)); } else |