All users -- GUP and KSM -- are gone, let's just remove it.
Signed-off-by: David Hildenbrand david@redhat.com --- include/linux/mm_types.h | 3 --- mm/huge_memory.c | 2 +- mm/memory.c | 9 ++++----- 3 files changed, 5 insertions(+), 9 deletions(-)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 8f30f262431c..6a1375dcb4ac 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -807,7 +807,6 @@ typedef __bitwise unsigned int vm_fault_t; * @VM_FAULT_OOM: Out Of Memory * @VM_FAULT_SIGBUS: Bad access * @VM_FAULT_MAJOR: Page read from storage - * @VM_FAULT_WRITE: Special case for get_user_pages * @VM_FAULT_HWPOISON: Hit poisoned small page * @VM_FAULT_HWPOISON_LARGE: Hit poisoned large page. Index encoded * in upper bits @@ -828,7 +827,6 @@ enum vm_fault_reason { VM_FAULT_OOM = (__force vm_fault_t)0x000001, VM_FAULT_SIGBUS = (__force vm_fault_t)0x000002, VM_FAULT_MAJOR = (__force vm_fault_t)0x000004, - VM_FAULT_WRITE = (__force vm_fault_t)0x000008, VM_FAULT_HWPOISON = (__force vm_fault_t)0x000010, VM_FAULT_HWPOISON_LARGE = (__force vm_fault_t)0x000020, VM_FAULT_SIGSEGV = (__force vm_fault_t)0x000040, @@ -854,7 +852,6 @@ enum vm_fault_reason { { VM_FAULT_OOM, "OOM" }, \ { VM_FAULT_SIGBUS, "SIGBUS" }, \ { VM_FAULT_MAJOR, "MAJOR" }, \ - { VM_FAULT_WRITE, "WRITE" }, \ { VM_FAULT_HWPOISON, "HWPOISON" }, \ { VM_FAULT_HWPOISON_LARGE, "HWPOISON_LARGE" }, \ { VM_FAULT_SIGSEGV, "SIGSEGV" }, \ diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 84bf1d5f6b7e..b351c1d4f858 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1376,7 +1376,7 @@ vm_fault_t do_huge_pmd_wp_page(struct vm_fault *vmf) if (pmdp_set_access_flags(vma, haddr, vmf->pmd, entry, 1)) update_mmu_cache_pmd(vma, vmf->address, vmf->pmd); spin_unlock(vmf->ptl); - return VM_FAULT_WRITE; + return 0; }
unlock_fallback: diff --git a/mm/memory.c b/mm/memory.c index e49faa0a1f9a..6e2f47d05f2b 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3240,7 +3240,7 @@ static vm_fault_t wp_page_copy(struct vm_fault *vmf) }
delayacct_wpcopy_end(); - return (page_copied && !unshare) ? VM_FAULT_WRITE : 0; + return 0; oom_free_new: put_page(new_page); oom: @@ -3304,14 +3304,14 @@ static vm_fault_t wp_pfn_shared(struct vm_fault *vmf) return finish_mkwrite_fault(vmf); } wp_page_reuse(vmf); - return VM_FAULT_WRITE; + return 0; }
static vm_fault_t wp_page_shared(struct vm_fault *vmf) __releases(vmf->ptl) { struct vm_area_struct *vma = vmf->vma; - vm_fault_t ret = VM_FAULT_WRITE; + vm_fault_t ret = 0;
get_page(vmf->page);
@@ -3462,7 +3462,7 @@ static vm_fault_t do_wp_page(struct vm_fault *vmf) return 0; } wp_page_reuse(vmf); - return VM_FAULT_WRITE; + return 0; } else if (unshare) { /* No anonymous page -> nothing to do. */ pte_unmap_unlock(vmf->pte, vmf->ptl); @@ -3960,7 +3960,6 @@ vm_fault_t do_swap_page(struct vm_fault *vmf) if (vmf->flags & FAULT_FLAG_WRITE) { pte = maybe_mkwrite(pte_mkdirty(pte), vma); vmf->flags &= ~FAULT_FLAG_WRITE; - ret |= VM_FAULT_WRITE; } rmap_flags |= RMAP_EXCLUSIVE; }