[RFC 3/3] mm/vma: Introduce some more VMA flag wrappers

From: Anshuman Khandual
Date: Mon Mar 02 2020 - 01:48:37 EST

This adds the following new VMA flag wrappers which will replace current
open encodings across various places. This should not have any functional
implications.

vma_is_dontdump()
vma_is_noreserve()
vma_is_special()
vma_is_locked()
vma_is_mergeable()
vma_is_softdirty()
vma_is_thp()
vma_is_nothp()

Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: sparclinux@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-fsdevel@xxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
arch/sparc/include/asm/mman.h | 2 +-
fs/binfmt_elf.c | 2 +-
fs/proc/task_mmu.c | 14 ++++++-------
include/linux/huge_mm.h | 4 ++--
include/linux/mm.h | 39 +++++++++++++++++++++++++++++++++++
kernel/events/core.c | 2 +-
kernel/events/uprobes.c | 2 +-
mm/gup.c | 2 +-
mm/huge_memory.c | 6 +++---
mm/hugetlb.c | 4 ++--
mm/ksm.c | 8 +++----
mm/madvise.c | 4 ++--
mm/memory.c | 4 ++--
mm/migrate.c | 4 ++--
mm/mlock.c | 4 ++--
mm/mmap.c | 16 +++++++-------
mm/mprotect.c | 2 +-
mm/mremap.c | 4 ++--
mm/msync.c | 3 +--
mm/rmap.c | 6 +++---
mm/shmem.c | 8 +++----
21 files changed, 89 insertions(+), 51 deletions(-)

diff --git a/arch/sparc/include/asm/mman.h b/arch/sparc/include/asm/mman.h
index f94532f25db1..661c56add451 100644
--- a/arch/sparc/include/asm/mman.h
+++ b/arch/sparc/include/asm/mman.h
@@ -80,7 +80,7 @@ static inline int sparc_validate_prot(unsigned long prot, unsigned long addr)
* tags on them. Disallow ADI on mergeable
* pages.
*/
- if (vma->vm_flags & VM_MERGEABLE)
+ if (vma_is_mergeable(vma))
return 0;
}
}
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 1eb63867e266..5d41047a4a77 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1305,7 +1305,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
if (always_dump_vma(vma))
goto whole;

- if (vma->vm_flags & VM_DONTDUMP)
+ if (vma_is_dontdump(vma))
return 0;

/* support for DAX */
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 3ba9ae83bff5..e425a8cc6c15 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -523,7 +523,7 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
{
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = walk->vma;
- bool locked = !!(vma->vm_flags & VM_LOCKED);
+ bool locked = vma_is_locked(vma);
struct page *page = NULL;

if (pte_present(*pte)) {
@@ -575,7 +575,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
{
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = walk->vma;
- bool locked = !!(vma->vm_flags & VM_LOCKED);
+ bool locked = vma_is_locked(vma);
struct page *page;

/* FOLL_DUMP will return -EFAULT on huge zero page */
@@ -1187,7 +1187,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
tlb_gather_mmu(&tlb, mm, 0, -1);
if (type == CLEAR_REFS_SOFT_DIRTY) {
for (vma = mm->mmap; vma; vma = vma->vm_next) {
- if (!(vma->vm_flags & VM_SOFTDIRTY))
+ if (!vma_is_softdirty(vma))
continue;
up_read(&mm->mmap_sem);
if (down_write_killable(&mm->mmap_sem)) {
@@ -1309,7 +1309,7 @@ static int pagemap_pte_hole(unsigned long start, unsigned long end,
break;

/* Addresses in the VMA. */
- if (vma->vm_flags & VM_SOFTDIRTY)
+ if (vma_is_softdirty(vma))
pme = make_pme(0, PM_SOFT_DIRTY);
for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) {
err = add_to_pagemap(addr, &pme, pm);
@@ -1354,7 +1354,7 @@ static pagemap_entry_t pte_to_pagemap_entry(struct pagemapread *pm,
flags |= PM_FILE;
if (page && page_mapcount(page) == 1)
flags |= PM_MMAP_EXCLUSIVE;
- if (vma->vm_flags & VM_SOFTDIRTY)
+ if (vma_is_softdirty(vma))
flags |= PM_SOFT_DIRTY;

return make_pme(frame, flags);
@@ -1376,7 +1376,7 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end,
pmd_t pmd = *pmdp;
struct page *page = NULL;

- if (vma->vm_flags & VM_SOFTDIRTY)
+ if (vma_is_softdirty(vma))
flags |= PM_SOFT_DIRTY;

if (pmd_present(pmd)) {
@@ -1464,7 +1464,7 @@ static int pagemap_hugetlb_range(pte_t *ptep, unsigned long hmask,
int err = 0;
pte_t pte;

- if (vma->vm_flags & VM_SOFTDIRTY)
+ if (vma_is_softdirty(vma))
flags |= PM_SOFT_DIRTY;

pte = huge_ptep_get(ptep);
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 5aca3d1bdb32..e04bd9eef47e 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -97,7 +97,7 @@ extern unsigned long transparent_hugepage_flags;
*/
static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
{
- if (vma->vm_flags & VM_NOHUGEPAGE)
+ if (vma_is_nothp(vma))
return false;

if (is_vma_temporary_stack(vma))
@@ -119,7 +119,7 @@ static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)

if (transparent_hugepage_flags &
(1 << TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG))
- return !!(vma->vm_flags & VM_HUGEPAGE);
+ return vma_is_thp(vma);

return false;
}
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 525026df1e58..4927e939a51d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -563,6 +563,45 @@ static inline bool vma_is_accessible(struct vm_area_struct *vma)
return vma->vm_flags & VM_ACCESS_FLAGS;
}

+static inline bool vma_is_dontdump(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_DONTDUMP;
+}
+
+static inline bool vma_is_noreserve(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_NORESERVE;
+}
+
+static inline bool vma_is_special(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_SPECIAL;
+}
+
+static inline bool vma_is_locked(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_LOCKED;
+}
+
+static inline bool vma_is_thp(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_HUGEPAGE;
+}
+
+static inline bool vma_is_nothp(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_NOHUGEPAGE;
+}
+
+static inline bool vma_is_mergeable(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_MERGEABLE;
+}
+
+static inline bool vma_is_softdirty(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_SOFTDIRTY;
+}
#ifdef CONFIG_SHMEM
/*
* The vma_is_shmem is not inline because it is used only by slow
diff --git a/kernel/events/core.c b/kernel/events/core.c
index ef5be3ed0580..8f7a4b15026a 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7692,7 +7692,7 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
flags |= MAP_DENYWRITE;
if (vma->vm_flags & VM_MAYEXEC)
flags |= MAP_EXECUTABLE;
- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
flags |= MAP_LOCKED;
if (is_vm_hugetlb_page(vma))
flags |= MAP_HUGETLB;
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index ece7e13f6e4a..5527098c1912 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -211,7 +211,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr,
try_to_free_swap(old_page);
page_vma_mapped_walk_done(&pvmw);

- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
munlock_vma_page(old_page);
put_page(old_page);

diff --git a/mm/gup.c b/mm/gup.c
index 58c8cbfeded6..ca23d23a90f2 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -289,7 +289,7 @@ static struct page *follow_page_pte(struct vm_area_struct *vma,
*/
mark_page_accessed(page);
}
- if ((flags & FOLL_MLOCK) && (vma->vm_flags & VM_LOCKED)) {
+ if ((flags & FOLL_MLOCK) && vma_is_locked(vma)) {
/* Do not mlock pte-mapped THP */
if (PageTransCompound(page))
goto out;
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index b08b199f9a11..d59ecb872ff2 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -674,7 +674,7 @@ static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf,
*/
static inline gfp_t alloc_hugepage_direct_gfpmask(struct vm_area_struct *vma)
{
- const bool vma_madvised = !!(vma->vm_flags & VM_HUGEPAGE);
+ const bool vma_madvised = vma_is_thp(vma);

/* Always do synchronous compaction */
if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_DIRECT_FLAG, &transparent_hugepage_flags))
@@ -1499,7 +1499,7 @@ struct page *follow_trans_huge_pmd(struct vm_area_struct *vma,
VM_BUG_ON_PAGE(!PageHead(page) && !is_zone_device_page(page), page);
if (flags & FOLL_TOUCH)
touch_pmd(vma, addr, pmd, flags);
- if ((flags & FOLL_MLOCK) && (vma->vm_flags & VM_LOCKED)) {
+ if ((flags & FOLL_MLOCK) && vma_is_locked(vma)) {
/*
* We don't mlock() pte-mapped THPs. This way we can avoid
* leaking mlocked pages into non-VM_LOCKED VMAs.
@@ -3082,7 +3082,7 @@ void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
else
page_add_file_rmap(new, true);
set_pmd_at(mm, mmun_start, pvmw->pmd, pmde);
- if ((vma->vm_flags & VM_LOCKED) && !PageDoubleMap(new))
+ if (vma_is_locked(vma) && !PageDoubleMap(new))
mlock_vma_page(new);
update_mmu_cache_pmd(vma, address, pvmw->pmd);
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index dd8737a94bec..efe40f533224 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -757,7 +757,7 @@ void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
/* Returns true if the VMA has associated reserve pages */
static bool vma_has_reserves(struct vm_area_struct *vma, long chg)
{
- if (vma->vm_flags & VM_NORESERVE) {
+ if (vma_is_noreserve(vma)) {
/*
* This address is already reserved by other process(chg == 0),
* so, we should decrement reserved count. Without decrementing,
@@ -4558,7 +4558,7 @@ int hugetlb_reserve_pages(struct inode *inode,
* attempt will be made for VM_NORESERVE to allocate a page
* without using reserves
*/
- if (vm_flags & VM_NORESERVE)
+ if (vma_is_noreserve(vma))
return 0;

/*
diff --git a/mm/ksm.c b/mm/ksm.c
index d17c7d57d0d8..8bf11a543c27 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -525,7 +525,7 @@ static struct vm_area_struct *find_mergeable_vma(struct mm_struct *mm,
vma = find_vma(mm, addr);
if (!vma || vma->vm_start > addr)
return NULL;
- if (!(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma)
+ if (!vma_is_mergeable(vma) || !vma->anon_vma)
return NULL;
return vma;
}
@@ -980,7 +980,7 @@ static int unmerge_and_remove_all_rmap_items(void)
for (vma = mm->mmap; vma; vma = vma->vm_next) {
if (ksm_test_exit(mm))
break;
- if (!(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma)
+ if (!vma_is_mergeable(vma) || !vma->anon_vma)
continue;
err = unmerge_ksm_pages(vma,
vma->vm_start, vma->vm_end);
@@ -1251,7 +1251,7 @@ static int try_to_merge_one_page(struct vm_area_struct *vma,
err = replace_page(vma, page, kpage, orig_pte);
}

- if ((vma->vm_flags & VM_LOCKED) && kpage && !err) {
+ if (vma_is_locked(vma) && kpage && !err) {
munlock_vma_page(page);
if (!PageMlocked(kpage)) {
unlock_page(page);
@@ -2284,7 +2284,7 @@ static struct rmap_item *scan_get_next_rmap_item(struct page **page)
vma = find_vma(mm, ksm_scan.address);

for (; vma; vma = vma->vm_next) {
- if (!(vma->vm_flags & VM_MERGEABLE))
+ if (!vma_is_mergeable(vma))
continue;
if (ksm_scan.address < vma->vm_start)
ksm_scan.address = vma->vm_start;
diff --git a/mm/madvise.c b/mm/madvise.c
index 43b47d3fae02..ffd6a4ff4c99 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -106,7 +106,7 @@ static long madvise_behavior(struct vm_area_struct *vma,
new_flags |= VM_DONTDUMP;
break;
case MADV_DODUMP:
- if (!is_vm_hugetlb_page(vma) && new_flags & VM_SPECIAL) {
+ if (!is_vm_hugetlb_page(vma) && vma_is_special(vma)) {
error = -EINVAL;
goto out;
}
@@ -821,7 +821,7 @@ static long madvise_remove(struct vm_area_struct *vma,

*prev = NULL; /* tell sys_madvise we drop mmap_sem */

- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
return -EINVAL;

f = vma->vm_file;
diff --git a/mm/memory.c b/mm/memory.c
index 2f07747612b7..c45386dae91b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2604,7 +2604,7 @@ static vm_fault_t wp_page_copy(struct vm_fault *vmf)
* Don't let another task, with possibly unlocked vma,
* keep the mlocked page.
*/
- if (page_copied && (vma->vm_flags & VM_LOCKED)) {
+ if (page_copied && vma_is_locked(vma)) {
lock_page(old_page); /* LRU manipulation */
if (PageMlocked(old_page))
munlock_vma_page(old_page);
@@ -3083,7 +3083,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)

swap_free(entry);
if (mem_cgroup_swap_full(page) ||
- (vma->vm_flags & VM_LOCKED) || PageMlocked(page))
+ vma_is_locked(vma) || PageMlocked(page))
try_to_free_swap(page);
unlock_page(page);
if (page != swapcache && swapcache) {
diff --git a/mm/migrate.c b/mm/migrate.c
index b1092876e537..45ac5b750e77 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -270,7 +270,7 @@ static bool remove_migration_pte(struct page *page, struct vm_area_struct *vma,
else
page_add_file_rmap(new, false);
}
- if (vma->vm_flags & VM_LOCKED && !PageTransCompound(new))
+ if (vma_is_locked(vma) && !PageTransCompound(new))
mlock_vma_page(new);

if (PageTransHuge(page) && PageMlocked(page))
@@ -2664,7 +2664,7 @@ int migrate_vma_setup(struct migrate_vma *args)
args->start &= PAGE_MASK;
args->end &= PAGE_MASK;
if (!args->vma || is_vm_hugetlb_page(args->vma) ||
- (args->vma->vm_flags & VM_SPECIAL) || vma_is_dax(args->vma))
+ (vma_is_special(args->vma) || vma_is_dax(args->vma))
return -EINVAL;
if (nr_pages <= 0)
return -EINVAL;
diff --git a/mm/mlock.c b/mm/mlock.c
index a72c1eeded77..3d4f66f2dee9 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -526,7 +526,7 @@ static int mlock_fixup(struct vm_area_struct *vma, struct vm_area_struct **prev,
int lock = !!(newflags & VM_LOCKED);
vm_flags_t old_flags = vma->vm_flags;

- if (newflags == vma->vm_flags || (vma->vm_flags & VM_SPECIAL) ||
+ if (newflags == vma->vm_flags || vma_is_special(vma) ||
is_vm_hugetlb_page(vma) || vma == get_gate_vma(current->mm) ||
vma_is_dax(vma))
/* don't set VM_LOCKED or VM_LOCKONFAULT and don't count */
@@ -654,7 +654,7 @@ static unsigned long count_mm_mlocked_page_nr(struct mm_struct *mm,
continue;
if (start + len <= vma->vm_start)
break;
- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
if (start > vma->vm_start)
count -= (start - vma->vm_start);
if (start + len < vma->vm_end) {
diff --git a/mm/mmap.c b/mm/mmap.c
index f9a01763857b..c93cad8aa9ac 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2279,7 +2279,7 @@ static int acct_stack_growth(struct vm_area_struct *vma,
return -ENOMEM;

/* mlock limit tests */
- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
unsigned long locked;
unsigned long limit;
locked = mm->locked_vm + grow;
@@ -2374,7 +2374,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
* against concurrent vma expansions.
*/
spin_lock(&mm->page_table_lock);
- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
mm->locked_vm += grow;
vm_stat_account(mm, vma->vm_flags, grow);
anon_vma_interval_tree_pre_update_vma(vma);
@@ -2454,7 +2454,7 @@ int expand_downwards(struct vm_area_struct *vma,
* against concurrent vma expansions.
*/
spin_lock(&mm->page_table_lock);
- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
mm->locked_vm += grow;
vm_stat_account(mm, vma->vm_flags, grow);
anon_vma_interval_tree_pre_update_vma(vma);
@@ -2508,7 +2508,7 @@ find_extend_vma(struct mm_struct *mm, unsigned long addr)
/* don't alter vm_end if the coredump is running */
if (!prev || !mmget_still_valid(mm) || expand_stack(prev, addr))
return NULL;
- if (prev->vm_flags & VM_LOCKED)
+ if (vma_is_locked(prev))
populate_vma_page_range(prev, addr, prev->vm_end, NULL);
return prev;
}
@@ -2538,7 +2538,7 @@ find_extend_vma(struct mm_struct *mm, unsigned long addr)
start = vma->vm_start;
if (expand_stack(vma, addr))
return NULL;
- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
populate_vma_page_range(vma, addr, start, NULL);
return vma;
}
@@ -2790,7 +2790,7 @@ int __do_munmap(struct mm_struct *mm, unsigned long start, size_t len,
if (mm->locked_vm) {
struct vm_area_struct *tmp = vma;
while (tmp && tmp->vm_start < end) {
- if (tmp->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(tmp)) {
mm->locked_vm -= vma_pages(tmp);
munlock_vma_pages_all(tmp);
}
@@ -2925,7 +2925,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,

flags &= MAP_NONBLOCK;
flags |= MAP_SHARED | MAP_FIXED | MAP_POPULATE;
- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
struct vm_area_struct *tmp;
flags |= MAP_LOCKED;

@@ -3105,7 +3105,7 @@ void exit_mmap(struct mm_struct *mm)
if (mm->locked_vm) {
vma = mm->mmap;
while (vma) {
- if (vma->vm_flags & VM_LOCKED)
+ if (vma_is_locked(vma))
munlock_vma_pages_all(vma);
vma = vma->vm_next;
}
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 4921a4211c6b..d7d4629979fc 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -117,7 +117,7 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
/* Avoid taking write faults for known dirty pages */
if (dirty_accountable && pte_dirty(ptent) &&
(pte_soft_dirty(ptent) ||
- !(vma->vm_flags & VM_SOFTDIRTY))) {
+ !vma_is_softdirty(vma))) {
ptent = pte_mkwrite(ptent);
}
ptep_modify_prot_commit(vma, addr, pte, oldpte, ptent);
diff --git a/mm/mremap.c b/mm/mremap.c
index af363063ea23..25d5ecbb783f 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -472,7 +472,7 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
if (vma->vm_flags & (VM_DONTEXPAND | VM_PFNMAP))
return ERR_PTR(-EFAULT);

- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
unsigned long locked, lock_limit;
locked = mm->locked_vm << PAGE_SHIFT;
lock_limit = rlimit(RLIMIT_MEMLOCK);
@@ -681,7 +681,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
}

vm_stat_account(mm, vma->vm_flags, pages);
- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
mm->locked_vm += pages;
locked = true;
new_addr = addr;
diff --git a/mm/msync.c b/mm/msync.c
index c3bd3e75f687..e02327f8ccca 100644
--- a/mm/msync.c
+++ b/mm/msync.c
@@ -75,8 +75,7 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags)
unmapped_error = -ENOMEM;
}
/* Here vma->vm_start <= start < vma->vm_end. */
- if ((flags & MS_INVALIDATE) &&
- (vma->vm_flags & VM_LOCKED)) {
+ if ((flags & MS_INVALIDATE) && vma_is_locked(vma)) {
error = -EBUSY;
goto out_unlock;
}
diff --git a/mm/rmap.c b/mm/rmap.c
index b3e381919835..b7941238aea9 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -785,7 +785,7 @@ static bool page_referenced_one(struct page *page, struct vm_area_struct *vma,
while (page_vma_mapped_walk(&pvmw)) {
address = pvmw.address;

- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
page_vma_mapped_walk_done(&pvmw);
pra->vm_flags |= VM_LOCKED;
return false; /* To break the loop */
@@ -1379,7 +1379,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
enum ttu_flags flags = (enum ttu_flags)arg;

/* munlock has nothing to gain from examining un-locked vmas */
- if ((flags & TTU_MUNLOCK) && !(vma->vm_flags & VM_LOCKED))
+ if ((flags & TTU_MUNLOCK) && !vma_is_locked(vma))
return true;

if (IS_ENABLED(CONFIG_MIGRATION) && (flags & TTU_MIGRATION) &&
@@ -1429,7 +1429,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
* skipped over this mm) then we should reactivate it.
*/
if (!(flags & TTU_IGNORE_MLOCK)) {
- if (vma->vm_flags & VM_LOCKED) {
+ if (vma_is_locked(vma)) {
/* PTE-mapped THP are never mlocked */
if (!PageTransCompound(page)) {
/*
diff --git a/mm/shmem.c b/mm/shmem.c
index aad3ba74b0e9..23fb58bb1e94 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2058,10 +2058,10 @@ static vm_fault_t shmem_fault(struct vm_fault *vmf)

sgp = SGP_CACHE;

- if ((vma->vm_flags & VM_NOHUGEPAGE) ||
+ if (vma_is_nothp(vma) ||
test_bit(MMF_DISABLE_THP, &vma->vm_mm->flags))
sgp = SGP_NOHUGE;
- else if (vma->vm_flags & VM_HUGEPAGE)
+ else if (vma_is_thp(vma))
sgp = SGP_HUGE;

err = shmem_getpage_gfp(inode, vmf->pgoff, &vmf->page, sgp,
@@ -3986,7 +3986,7 @@ bool shmem_huge_enabled(struct vm_area_struct *vma)
loff_t i_size;
pgoff_t off;

- if ((vma->vm_flags & VM_NOHUGEPAGE) ||
+ if (vma_is_nothp(vma) ||
test_bit(MMF_DISABLE_THP, &vma->vm_mm->flags))
return false;
if (shmem_huge == SHMEM_HUGE_FORCE)
@@ -4007,7 +4007,7 @@ bool shmem_huge_enabled(struct vm_area_struct *vma)
/* fall through */
case SHMEM_HUGE_ADVISE:
/* TODO: implement fadvise() hints */
- return (vma->vm_flags & VM_HUGEPAGE);
+ return (vma_is_thp(vma));
default:
VM_BUG_ON(1);
return false;
--
2.20.1