UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

mm: remove rest usage of VM_NONLINEAR and pte_file() 

One bit in ->vm_flags is unused now!

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2015-02-10 14:10:04 -08:00 committed by Linus Torvalds
parent ac51b934f3
commit 0661a33611
13 changed files with 45 additions and 67 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/drm_vma_manager.c
View File

@ -50,8 +50,7 @@
*
* You must not use multiple offset managers on a single address_space.
* Otherwise, mm-core will be unable to tear down memory mappings as the VM will
* no longer be linear. Please use VM_NONLINEAR in that case and implement your
* own offset managers.
* no longer be linear.
*
* This offset manager works on page-based addresses. That is, every argument
* and return code (with the exception of drm_vma_node_offset_addr()) is given

1
include/linux/mm.h
View File

@ -138,7 +138,6 @@ extern unsigned int kobjsize(const void *objp);
#define VM_ACCOUNT 0x00100000 /* Is a VM accounted object */
#define VM_NORESERVE 0x00200000 /* should the VM suppress accounting */
#define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */
#define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */
#define VM_ARCH_1 0x01000000 /* Architecture-specific flag */
#define VM_ARCH_2 0x02000000
#define VM_DONTDUMP 0x04000000 /* Do not include in the core dump */

4
include/linux/swapops.h
View File

@ -54,7 +54,7 @@ static inline pgoff_t swp_offset(swp_entry_t entry)
/* check whether a pte points to a swap entry */
static inline int is_swap_pte(pte_t pte)
{
return !pte_none(pte) && !pte_present_nonuma(pte) && !pte_file(pte);
return !pte_none(pte) && !pte_present_nonuma(pte);
}
#endif
@ -66,7 +66,6 @@ static inline swp_entry_t pte_to_swp_entry(pte_t pte)
{
swp_entry_t arch_entry;
BUG_ON(pte_file(pte));
if (pte_swp_soft_dirty(pte))
pte = pte_swp_clear_soft_dirty(pte);
arch_entry = __pte_to_swp_entry(pte);
@ -82,7 +81,6 @@ static inline pte_t swp_entry_to_pte(swp_entry_t entry)
swp_entry_t arch_entry;
arch_entry = __swp_entry(swp_type(entry), swp_offset(entry));
BUG_ON(pte_file(__swp_entry_to_pte(arch_entry)));
return __swp_entry_to_pte(arch_entry);
}

1
mm/debug.c
View File

@ -130,7 +130,6 @@ static const struct trace_print_flags vmaflags_names[] = {
{VM_ACCOUNT, "account" },
{VM_NORESERVE, "noreserve" },
{VM_HUGETLB, "hugetlb" },
{VM_NONLINEAR, "nonlinear" },
#if defined(CONFIG_X86)
{VM_PAT, "pat" },
#elif defined(CONFIG_PPC)

2
mm/gup.c
View File

@ -55,7 +55,7 @@ retry:
*/
if (likely(!(flags & FOLL_MIGRATION)))
goto no_page;
if (pte_none(pte) || pte_file(pte))
if (pte_none(pte))
goto no_page;
entry = pte_to_swp_entry(pte);
if (!is_migration_entry(entry))

2
mm/ksm.c
View File

@ -1748,7 +1748,7 @@ int ksm_madvise(struct vm_area_struct *vma, unsigned long start,
*/
if (*vm_flags & (VM_MERGEABLE | VM_SHARED | VM_MAYSHARE |
VM_PFNMAP | VM_IO | VM_DONTEXPAND |
VM_HUGETLB | VM_NONLINEAR | VM_MIXEDMAP))
VM_HUGETLB | VM_MIXEDMAP))
return 0; /* just ignore the advice */
#ifdef VM_SAO

4
mm/madvise.c
View File

@ -155,7 +155,7 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start,
pte = *(orig_pte + ((index - start) / PAGE_SIZE));
pte_unmap_unlock(orig_pte, ptl);
if (pte_present(pte) || pte_none(pte) || pte_file(pte))
if (pte_present(pte) || pte_none(pte))
continue;
entry = pte_to_swp_entry(pte);
if (unlikely(non_swap_entry(entry)))
@ -296,7 +296,7 @@ static long madvise_remove(struct vm_area_struct *vma,
*prev = NULL; /* tell sys_madvise we drop mmap_sem */
if (vma->vm_flags & (VM_LOCKED|VM_NONLINEAR|VM_HUGETLB))
if (vma->vm_flags & (VM_LOCKED | VM_HUGETLB))
return -EINVAL;
f = vma->vm_file;

5
mm/memcontrol.c
View File

@ -4926,10 +4926,7 @@ static struct page *mc_handle_file_pte(struct vm_area_struct *vma,
return NULL;
mapping = vma->vm_file->f_mapping;
if (pte_none(ptent))
pgoff = linear_page_index(vma, addr);
else /* pte_file(ptent) is true */
pgoff = pte_to_pgoff(ptent);
/* page is moved even if it's not RSS of this task(page-faulted). */
#ifdef CONFIG_SWAP
@ -4961,7 +4958,7 @@ static enum mc_target_type get_mctgt_type(struct vm_area_struct *vma,
page = mc_handle_present_pte(vma, addr, ptent);
else if (is_swap_pte(ptent))
page = mc_handle_swap_pte(vma, addr, ptent, &ent);
else if (pte_none(ptent) || pte_file(ptent))
else if (pte_none(ptent))
page = mc_handle_file_pte(vma, addr, ptent, &ent);
if (!page && !ent.val)

8
mm/memory.c
View File

@ -811,7 +811,6 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm,
/* pte contains position in swap or file, so copy. */
if (unlikely(!pte_present(pte))) {
if (!pte_file(pte)) {
swp_entry_t entry = pte_to_swp_entry(pte);
if (likely(!non_swap_entry(entry))) {
@ -848,7 +847,6 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm,
set_pte_at(src_mm, addr, src_pte, pte);
}
}
}
goto out_set_pte;
}
@ -1020,11 +1018,9 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
* readonly mappings. The tradeoff is that copy_page_range is more
* efficient than faulting.
*/
if (!(vma->vm_flags & (VM_HUGETLB | VM_NONLINEAR |
VM_PFNMAP | VM_MIXEDMAP))) {
if (!vma->anon_vma)
if (!(vma->vm_flags & (VM_HUGETLB | VM_PFNMAP | VM_MIXEDMAP)) &&
!vma->anon_vma)
return 0;
}
if (is_vm_hugetlb_page(vma))
return copy_hugetlb_page_range(dst_mm, src_mm, vma);

9
mm/mincore.c
View File

@ -124,17 +124,13 @@ static void mincore_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
ptep = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
do {
pte_t pte = *ptep;
pgoff_t pgoff;
next = addr + PAGE_SIZE;
if (pte_none(pte))
mincore_unmapped_range(vma, addr, next, vec);
else if (pte_present(pte))
*vec = 1;
else if (pte_file(pte)) {
pgoff = pte_to_pgoff(pte);
*vec = mincore_page(vma->vm_file->f_mapping, pgoff);
} else { /* pte is a swap entry */
else { /* pte is a swap entry */
swp_entry_t entry = pte_to_swp_entry(pte);
if (non_swap_entry(entry)) {
@ -145,9 +141,8 @@ static void mincore_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
*vec = 1;
} else {
#ifdef CONFIG_SWAP
pgoff = entry.val;
*vec = mincore_page(swap_address_space(entry),
pgoff);
entry.val);
#else
WARN_ON(1);
*vec = 1;

2
mm/mprotect.c
View File

@ -105,7 +105,7 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
}
if (updated)
pages++;
} else if (IS_ENABLED(CONFIG_MIGRATION) && !pte_file(oldpte)) {
} else if (IS_ENABLED(CONFIG_MIGRATION)) {
swp_entry_t entry = pte_to_swp_entry(oldpte);
if (is_write_migration_entry(entry)) {

2
mm/mremap.c
View File

@ -81,8 +81,6 @@ static pte_t move_soft_dirty_pte(pte_t pte)
pte = pte_mksoft_dirty(pte);
else if (is_swap_pte(pte))
pte = pte_swp_mksoft_dirty(pte);
else if (pte_file(pte))
pte = pte_file_mksoft_dirty(pte);
#endif
return pte;
}

3
mm/msync.c
View File

@ -86,9 +86,6 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags)
(vma->vm_flags & VM_SHARED)) {
get_file(file);
up_read(&mm->mmap_sem);
if (vma->vm_flags & VM_NONLINEAR)
error = vfs_fsync(file, 1);
else
error = vfs_fsync_range(file, fstart, fend, 1);
fput(file);
if (error || start >= end)