Both of its callers currently convert its errno return into a vm_fault_t, so move the conversion into __vm_insert_mixed.
Signed-off-by: Matthew Wilcox <[email protected]> --- mm/memory.c | 36 +++++++++++++++--------------------- 1 file changed, 15 insertions(+), 21 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index 9e97926fee19..9fef202b4ea7 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1915,20 +1915,21 @@ static bool vm_mixed_ok(struct vm_area_struct *vma, pfn_t pfn) return false; } -static int __vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr, - pfn_t pfn, bool mkwrite) +static vm_fault_t __vm_insert_mixed(struct vm_area_struct *vma, + unsigned long addr, pfn_t pfn, bool mkwrite) { pgprot_t pgprot = vma->vm_page_prot; + int err; BUG_ON(!vm_mixed_ok(vma, pfn)); if (addr < vma->vm_start || addr >= vma->vm_end) - return -EFAULT; + return VM_FAULT_SIGBUS; track_pfn_insert(vma, &pgprot, pfn); if (!pfn_modify_allowed(pfn_t_to_pfn(pfn), pgprot)) - return -EACCES; + return VM_FAULT_SIGBUS; /* * If we don't have pte special, then we have to use the pfn_valid() @@ -1947,15 +1948,10 @@ static int __vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr, * result in pfn_t_has_page() == false. */ page = pfn_to_page(pfn_t_to_pfn(pfn)); - return insert_page(vma, addr, page, pgprot); + err = insert_page(vma, addr, page, pgprot); + } else { + err = insert_pfn(vma, addr, pfn, pgprot, mkwrite); } - return insert_pfn(vma, addr, pfn, pgprot, mkwrite); -} - -vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma, unsigned long addr, - pfn_t pfn) -{ - int err = __vm_insert_mixed(vma, addr, pfn, false); if (err == -ENOMEM) return VM_FAULT_OOM; @@ -1964,6 +1960,12 @@ vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma, unsigned long addr, return VM_FAULT_NOPAGE; } + +vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma, unsigned long addr, + pfn_t pfn) +{ + return __vm_insert_mixed(vma, addr, pfn, false); +} EXPORT_SYMBOL(vmf_insert_mixed); /* @@ -1971,18 +1973,10 @@ EXPORT_SYMBOL(vmf_insert_mixed); * different entry in the mean time, we treat that as success as we assume * the same entry was actually inserted. */ - vm_fault_t vmf_insert_mixed_mkwrite(struct vm_area_struct *vma, unsigned long addr, pfn_t pfn) { - int err; - - err = __vm_insert_mixed(vma, addr, pfn, true); - if (err == -ENOMEM) - return VM_FAULT_OOM; - if (err < 0 && err != -EBUSY) - return VM_FAULT_SIGBUS; - return VM_FAULT_NOPAGE; + return __vm_insert_mixed(vma, addr, pfn, true); } EXPORT_SYMBOL(vmf_insert_mixed_mkwrite); -- 2.18.0
