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Date: Wed, 1 Oct 2014 14:32:01 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Sasha Levin <sasha.levin@...cle.com>
Cc: Dave Hansen <dave.hansen@...el.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH 3/3] mm: use VM_BUG_ON() instead of VM_BUG_ON_VMA() and VM_BUG_ON_MM()
Convert VM_BUG_ON_VMA() and VM_BUG_ON_MM() to new VM_BUG_ON(). Dump more
than one data structure where is appropriate.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
---
include/linux/huge_mm.h | 2 +-
include/linux/mmdebug.h | 4 ----
include/linux/rmap.h | 2 +-
kernel/fork.c | 2 +-
kernel/sys.c | 2 +-
mm/huge_memory.c | 8 ++++----
mm/hugetlb.c | 14 +++++++-------
mm/interval_tree.c | 2 +-
mm/mlock.c | 6 +++---
mm/mmap.c | 8 ++++----
mm/mremap.c | 3 +--
mm/pagewalk.c | 2 +-
mm/rmap.c | 8 ++++----
13 files changed, 29 insertions(+), 34 deletions(-)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index ad9051bab267..f64e57260d2e 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -132,7 +132,7 @@ extern int __pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
static inline int pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
spinlock_t **ptl)
{
- VM_BUG_ON_VMA(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
+ VM_BUG_ON(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
if (pmd_trans_huge(*pmd))
return __pmd_trans_huge_lock(pmd, vma, ptl);
else
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index 816cbd050ea9..41e0fb8a1522 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -60,15 +60,11 @@ void dump_mm(const struct mm_struct *mm);
_VM_BUG_ON_ARG2, \
_VM_BUG_ON_ARG1, \
BUG_ON)(__VA_ARGS__)
-#define VM_BUG_ON_VMA VM_BUG_ON
-#define VM_BUG_ON_MM VM_BUG_ON
#define VM_WARN_ON(cond) WARN_ON(cond)
#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
#else
#define VM_BUG_ON(cond, ...) BUILD_BUG_ON_INVALID(cond)
-#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)
-#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index c0c2bce6b0b7..3c90d656175c 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -150,7 +150,7 @@ int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *);
static inline void anon_vma_merge(struct vm_area_struct *vma,
struct vm_area_struct *next)
{
- VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);
+ VM_BUG_ON(vma->anon_vma != next->anon_vma, vma, next);
unlink_anon_vmas(next);
}
diff --git a/kernel/fork.c b/kernel/fork.c
index 807633f6074a..39d1db54ec5a 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -608,7 +608,7 @@ static void check_mm(struct mm_struct *mm)
"mm:%p idx:%d val:%ld\n", mm, i, x);
}
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) && !USE_SPLIT_PMD_PTLOCKS
- VM_BUG_ON_MM(mm->pmd_huge_pte, mm);
+ VM_BUG_ON(mm->pmd_huge_pte, mm);
#endif
}
diff --git a/kernel/sys.c b/kernel/sys.c
index 1eaa2f0b0246..48e8e05b88da 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1640,7 +1640,7 @@ static int prctl_set_mm_exe_file_locked(struct mm_struct *mm, unsigned int fd)
struct inode *inode;
int err;
- VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_sem), mm);
+ VM_BUG_ON(!rwsem_is_locked(&mm->mmap_sem), mm);
exe = fdget(fd);
if (!exe.file)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 83e881610f96..1e540b2cdcd4 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1096,7 +1096,7 @@ int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long mmun_end; /* For mmu_notifiers */
ptl = pmd_lockptr(mm, pmd);
- VM_BUG_ON_VMA(!vma->anon_vma, vma);
+ VM_BUG_ON(!vma->anon_vma, vma);
haddr = address & HPAGE_PMD_MASK;
if (is_huge_zero_pmd(orig_pmd))
goto alloc;
@@ -2045,7 +2045,7 @@ int __khugepaged_enter(struct mm_struct *mm)
return -ENOMEM;
/* __khugepaged_exit() must not run from under us */
- VM_BUG_ON_MM(khugepaged_test_exit(mm), mm);
+ VM_BUG_ON(khugepaged_test_exit(mm), mm);
if (unlikely(test_and_set_bit(MMF_VM_HUGEPAGE, &mm->flags))) {
free_mm_slot(mm_slot);
return 0;
@@ -2080,7 +2080,7 @@ int khugepaged_enter_vma_merge(struct vm_area_struct *vma)
if (vma->vm_ops)
/* khugepaged not yet working on file or special mappings */
return 0;
- VM_BUG_ON_VMA(vma->vm_flags & VM_NO_THP, vma);
+ VM_BUG_ON(vma->vm_flags & VM_NO_THP, vma);
hstart = (vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK;
hend = vma->vm_end & HPAGE_PMD_MASK;
if (hstart < hend)
@@ -2403,7 +2403,7 @@ static bool hugepage_vma_check(struct vm_area_struct *vma)
return false;
if (is_vma_temporary_stack(vma))
return false;
- VM_BUG_ON_VMA(vma->vm_flags & VM_NO_THP, vma);
+ VM_BUG_ON(vma->vm_flags & VM_NO_THP, vma);
return true;
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index f537e7d1ac92..3ba97ce6bd08 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -434,7 +434,7 @@ static inline struct resv_map *inode_resv_map(struct inode *inode)
static struct resv_map *vma_resv_map(struct vm_area_struct *vma)
{
- VM_BUG_ON_VMA(!is_vm_hugetlb_page(vma), vma);
+ VM_BUG_ON(!is_vm_hugetlb_page(vma), vma);
if (vma->vm_flags & VM_MAYSHARE) {
struct address_space *mapping = vma->vm_file->f_mapping;
struct inode *inode = mapping->host;
@@ -449,8 +449,8 @@ static struct resv_map *vma_resv_map(struct vm_area_struct *vma)
static void set_vma_resv_map(struct vm_area_struct *vma, struct resv_map *map)
{
- VM_BUG_ON_VMA(!is_vm_hugetlb_page(vma), vma);
- VM_BUG_ON_VMA(vma->vm_flags & VM_MAYSHARE, vma);
+ VM_BUG_ON(!is_vm_hugetlb_page(vma), vma);
+ VM_BUG_ON(vma->vm_flags & VM_MAYSHARE, vma);
set_vma_private_data(vma, (get_vma_private_data(vma) &
HPAGE_RESV_MASK) | (unsigned long)map);
@@ -458,15 +458,15 @@ static void set_vma_resv_map(struct vm_area_struct *vma, struct resv_map *map)
static void set_vma_resv_flags(struct vm_area_struct *vma, unsigned long flags)
{
- VM_BUG_ON_VMA(!is_vm_hugetlb_page(vma), vma);
- VM_BUG_ON_VMA(vma->vm_flags & VM_MAYSHARE, vma);
+ VM_BUG_ON(!is_vm_hugetlb_page(vma), vma);
+ VM_BUG_ON(vma->vm_flags & VM_MAYSHARE, vma);
set_vma_private_data(vma, get_vma_private_data(vma) | flags);
}
static int is_vma_resv_set(struct vm_area_struct *vma, unsigned long flag)
{
- VM_BUG_ON_VMA(!is_vm_hugetlb_page(vma), vma);
+ VM_BUG_ON(!is_vm_hugetlb_page(vma), vma);
return (get_vma_private_data(vma) & flag) != 0;
}
@@ -474,7 +474,7 @@ static int is_vma_resv_set(struct vm_area_struct *vma, unsigned long flag)
/* Reset counters to 0 and clear all HPAGE_RESV_* flags */
void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
{
- VM_BUG_ON_VMA(!is_vm_hugetlb_page(vma), vma);
+ VM_BUG_ON(!is_vm_hugetlb_page(vma), vma);
if (!(vma->vm_flags & VM_MAYSHARE))
vma->vm_private_data = (void *)0;
}
diff --git a/mm/interval_tree.c b/mm/interval_tree.c
index 8da581fa9060..d185a2a51b83 100644
--- a/mm/interval_tree.c
+++ b/mm/interval_tree.c
@@ -34,7 +34,7 @@ void vma_interval_tree_insert_after(struct vm_area_struct *node,
struct vm_area_struct *parent;
unsigned long last = vma_last_pgoff(node);
- VM_BUG_ON_VMA(vma_start_pgoff(node) != vma_start_pgoff(prev), node);
+ VM_BUG_ON(vma_start_pgoff(node) != vma_start_pgoff(prev), node, prev);
if (!prev->shared.linear.rb.rb_right) {
parent = prev;
diff --git a/mm/mlock.c b/mm/mlock.c
index af98bc02e164..a48f1628347d 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -233,9 +233,9 @@ long __mlock_vma_pages_range(struct vm_area_struct *vma,
VM_BUG_ON(start & ~PAGE_MASK);
VM_BUG_ON(end & ~PAGE_MASK);
- VM_BUG_ON_VMA(start < vma->vm_start, vma);
- VM_BUG_ON_VMA(end > vma->vm_end, vma);
- VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_sem), mm);
+ VM_BUG_ON(start < vma->vm_start, vma);
+ VM_BUG_ON(end > vma->vm_end, vma);
+ VM_BUG_ON(!rwsem_is_locked(&mm->mmap_sem), mm, vma);
gup_flags = FOLL_TOUCH | FOLL_MLOCK;
/*
diff --git a/mm/mmap.c b/mm/mmap.c
index 915661293af9..f9692eeedea5 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -429,7 +429,7 @@ static void validate_mm_rb(struct rb_root *root, struct vm_area_struct *ignore)
for (nd = rb_first(root); nd; nd = rb_next(nd)) {
struct vm_area_struct *vma;
vma = rb_entry(nd, struct vm_area_struct, vm_rb);
- VM_BUG_ON_VMA(vma != ignore &&
+ VM_BUG_ON(vma != ignore &&
vma->rb_subtree_gap != vma_compute_subtree_gap(vma),
vma);
}
@@ -468,7 +468,7 @@ static void validate_mm(struct mm_struct *mm)
pr_emerg("map_count %d rb %d\n", mm->map_count, i);
bug = 1;
}
- VM_BUG_ON_MM(bug, mm);
+ VM_BUG_ON(bug, mm);
}
#else
#define validate_mm_rb(root, ignore) do { } while (0)
@@ -811,7 +811,7 @@ again: remove_next = 1 + (end > next->vm_end);
if (!anon_vma && adjust_next)
anon_vma = next->anon_vma;
if (anon_vma) {
- VM_BUG_ON_VMA(adjust_next && next->anon_vma &&
+ VM_BUG_ON(adjust_next && next->anon_vma &&
anon_vma != next->anon_vma, next);
anon_vma_lock_write(anon_vma);
anon_vma_interval_tree_pre_update_vma(vma);
@@ -2934,7 +2934,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
* safe. It is only safe to keep the vm_pgoff
* linear if there are no pages mapped yet.
*/
- VM_BUG_ON_VMA(faulted_in_anon_vma, new_vma);
+ VM_BUG_ON(faulted_in_anon_vma, new_vma);
*vmap = vma = new_vma;
}
*need_rmap_locks = (new_vma->vm_pgoff <= vma->vm_pgoff);
diff --git a/mm/mremap.c b/mm/mremap.c
index 2fbf5e30eab9..0ae195c72f27 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -195,8 +195,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
if (pmd_trans_huge(*old_pmd)) {
int err = 0;
if (extent == HPAGE_PMD_SIZE) {
- VM_BUG_ON_VMA(vma->vm_file || !vma->anon_vma,
- vma);
+ VM_BUG_ON(vma->vm_file || !vma->anon_vma, vma);
/* See comment in move_ptes() */
if (need_rmap_locks)
anon_vma_lock_write(vma->anon_vma);
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index ad83195521f2..cdd53f41bdc2 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -177,7 +177,7 @@ int walk_page_range(unsigned long addr, unsigned long end,
if (!walk->mm)
return -EINVAL;
- VM_BUG_ON_MM(!rwsem_is_locked(&walk->mm->mmap_sem), walk->mm);
+ VM_BUG_ON(!rwsem_is_locked(&walk->mm->mmap_sem), walk->mm);
pgd = pgd_offset(walk->mm, addr);
do {
diff --git a/mm/rmap.c b/mm/rmap.c
index cc9cf848472c..9d316fdd0404 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -527,7 +527,7 @@ vma_address(struct page *page, struct vm_area_struct *vma)
unsigned long address = __vma_address(page, vma);
/* page should be within @vma mapping range */
- VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma);
+ VM_BUG_ON(address < vma->vm_start || address >= vma->vm_end, vma, page);
return address;
}
@@ -897,8 +897,8 @@ void page_move_anon_rmap(struct page *page,
struct anon_vma *anon_vma = vma->anon_vma;
VM_BUG_ON(!PageLocked(page), page);
- VM_BUG_ON_VMA(!anon_vma, vma);
- VM_BUG_ON(page->index != linear_page_index(vma, address), page);
+ VM_BUG_ON(!anon_vma, vma, page);
+ VM_BUG_ON(page->index != linear_page_index(vma, address), vma, page);
anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON;
page->mapping = (struct address_space *) anon_vma;
@@ -1024,7 +1024,7 @@ void do_page_add_anon_rmap(struct page *page,
void page_add_new_anon_rmap(struct page *page,
struct vm_area_struct *vma, unsigned long address)
{
- VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma);
+ VM_BUG_ON(address < vma->vm_start || address >= vma->vm_end, vma, page);
SetPageSwapBacked(page);
atomic_set(&page->_mapcount, 0); /* increment count (starts at -1) */
if (PageTransHuge(page))
--
2.1.0
--
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