[PATCH -next] Maple Tree: remove not used entry in mas_preallocate()

From: Yang Yingliang
Date: Wed Aug 24 2022 - 04:23:34 EST

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'entry' is not used in mas_preallocate(), so remove it.

Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
include/linux/maple_tree.h | 2 +-
lib/maple_tree.c | 3 +--
lib/test_maple_tree.c | 32 ++++++++++++++++----------------
mm/mmap.c | 14 +++++++-------
mm/nommu.c | 8 ++++----
5 files changed, 29 insertions(+), 30 deletions(-)

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index a30e03b06bed..61871480d125 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -456,7 +456,7 @@ int mas_store_gfp(struct ma_state *mas, void *entry, gfp_t gfp);
void mas_store_prealloc(struct ma_state *mas, void *entry);
void *mas_find(struct ma_state *mas, unsigned long max);
void *mas_find_rev(struct ma_state *mas, unsigned long min);
-int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp);
+int mas_preallocate(struct ma_state *mas, gfp_t gfp);
bool mas_is_err(struct ma_state *mas);

bool mas_nomem(struct ma_state *mas, gfp_t gfp);
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index e1743803c851..2adc12a83caf 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -5707,12 +5707,11 @@ void mas_store_prealloc(struct ma_state *mas, void *entry)
/**
* mas_preallocate() - Preallocate enough nodes for a store operation
* @mas: The maple state
- * @entry: The entry that will be stored
* @gfp: The GFP_FLAGS to use for allocations.
*
* Return: 0 on success, -ENOMEM if memory could not be allocated.
*/
-int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp)
+int mas_preallocate(struct ma_state *mas, gfp_t gfp)
{
int ret;

diff --git a/lib/test_maple_tree.c b/lib/test_maple_tree.c
index 4f69e009a015..80d1754de23e 100644
--- a/lib/test_maple_tree.c
+++ b/lib/test_maple_tree.c
@@ -35549,7 +35549,7 @@ static noinline void check_prealloc(struct maple_tree *mt)
for (i = 0; i <= max; i++)
mtree_test_store_range(mt, i * 10, i * 10 + 5, &i);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
@@ -35558,18 +35558,18 @@ static noinline void check_prealloc(struct maple_tree *mt)
allocated = mas_allocated(&mas);
MT_BUG_ON(mt, allocated != 0);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
MT_BUG_ON(mt, allocated != 1 + height * 3);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
mas_destroy(&mas);
allocated = mas_allocated(&mas);
MT_BUG_ON(mt, allocated != 0);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
@@ -35577,25 +35577,25 @@ static noinline void check_prealloc(struct maple_tree *mt)
mn = mas_pop_node(&mas);
MT_BUG_ON(mt, mas_allocated(&mas) != allocated - 1);
ma_free_rcu(mn);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
mas_destroy(&mas);
allocated = mas_allocated(&mas);
MT_BUG_ON(mt, allocated != 0);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
MT_BUG_ON(mt, allocated != 1 + height * 3);
mn = mas_pop_node(&mas);
MT_BUG_ON(mt, mas_allocated(&mas) != allocated - 1);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
mas_destroy(&mas);
allocated = mas_allocated(&mas);
MT_BUG_ON(mt, allocated != 0);
ma_free_rcu(mn);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
@@ -35604,12 +35604,12 @@ static noinline void check_prealloc(struct maple_tree *mt)
MT_BUG_ON(mt, mas_allocated(&mas) != allocated - 1);
mas_push_node(&mas, mn);
MT_BUG_ON(mt, mas_allocated(&mas) != allocated);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
mas_destroy(&mas);
allocated = mas_allocated(&mas);
MT_BUG_ON(mt, allocated != 0);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
@@ -35617,21 +35617,21 @@ static noinline void check_prealloc(struct maple_tree *mt)
mas_store_prealloc(&mas, ptr);
MT_BUG_ON(mt, mas_allocated(&mas) != 0);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
MT_BUG_ON(mt, allocated != 1 + height * 3);
mas_store_prealloc(&mas, ptr);
MT_BUG_ON(mt, mas_allocated(&mas) != 0);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
MT_BUG_ON(mt, allocated != 1 + height * 3);
mas_store_prealloc(&mas, ptr);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
@@ -35639,14 +35639,14 @@ static noinline void check_prealloc(struct maple_tree *mt)
mas_store_prealloc(&mas, ptr);
MT_BUG_ON(mt, mas_allocated(&mas) != 0);
mt_set_non_kernel(1);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL & GFP_NOWAIT) == 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL & GFP_NOWAIT) == 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated != 0);
mas_destroy(&mas);

- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL) != 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated == 0);
@@ -35654,7 +35654,7 @@ static noinline void check_prealloc(struct maple_tree *mt)
mas_store_prealloc(&mas, ptr);
MT_BUG_ON(mt, mas_allocated(&mas) != 0);
mt_set_non_kernel(1);
- MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL & GFP_NOWAIT) == 0);
+ MT_BUG_ON(mt, mas_preallocate(&mas, GFP_KERNEL & GFP_NOWAIT) == 0);
allocated = mas_allocated(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, allocated != 0);
diff --git a/mm/mmap.c b/mm/mmap.c
index 6445fd386f04..63a03ce1d0bb 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -473,7 +473,7 @@ static int vma_link(struct mm_struct *mm, struct vm_area_struct *vma)
MA_STATE(mas, &mm->mm_mt, 0, 0);
struct address_space *mapping = NULL;

- if (mas_preallocate(&mas, vma, GFP_KERNEL))
+ if (mas_preallocate(&mas, GFP_KERNEL))
return -ENOMEM;

if (vma->vm_file) {
@@ -539,7 +539,7 @@ inline int vma_expand(struct ma_state *mas, struct vm_area_struct *vma,
/* Only handles expanding */
VM_BUG_ON(vma->vm_start < start || vma->vm_end > end);

- if (mas_preallocate(mas, vma, GFP_KERNEL))
+ if (mas_preallocate(mas, GFP_KERNEL))
goto nomem;

vma_adjust_trans_huge(vma, start, end, 0);
@@ -712,7 +712,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
}
}

- if (mas_preallocate(&mas, vma, GFP_KERNEL))
+ if (mas_preallocate(&mas, GFP_KERNEL))
return -ENOMEM;

vma_adjust_trans_huge(orig_vma, start, end, adjust_next);
@@ -1937,7 +1937,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
/* Check that both stack segments have the same anon_vma? */
}

- if (mas_preallocate(&mas, vma, GFP_KERNEL))
+ if (mas_preallocate(&mas, GFP_KERNEL))
return -ENOMEM;

/* We must make sure the anon_vma is allocated. */
@@ -2018,7 +2018,7 @@ int expand_downwards(struct vm_area_struct *vma, unsigned long address)
return -ENOMEM;
}

- if (mas_preallocate(&mas, vma, GFP_KERNEL))
+ if (mas_preallocate(&mas, GFP_KERNEL))
return -ENOMEM;

/* We must make sure the anon_vma is allocated. */
@@ -2310,7 +2310,7 @@ do_mas_align_munmap(struct ma_state *mas, struct vm_area_struct *vma,
mt_init_flags(&mt_detach, MT_FLAGS_LOCK_EXTERN);
mt_set_external_lock(&mt_detach, &mm->mmap_lock);

- if (mas_preallocate(mas, vma, GFP_KERNEL))
+ if (mas_preallocate(mas, GFP_KERNEL))
return -ENOMEM;

mas->last = end - 1;
@@ -2678,7 +2678,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
goto free_vma;
}

- if (mas_preallocate(&mas, vma, GFP_KERNEL)) {
+ if (mas_preallocate(&mas, GFP_KERNEL)) {
error = -ENOMEM;
if (file)
goto unmap_and_free_vma;
diff --git a/mm/nommu.c b/mm/nommu.c
index 214c70e1d059..0befa4060aea 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -602,7 +602,7 @@ static int add_vma_to_mm(struct mm_struct *mm, struct vm_area_struct *vma)
{
MA_STATE(mas, &mm->mm_mt, vma->vm_start, vma->vm_end);

- if (mas_preallocate(&mas, vma, GFP_KERNEL)) {
+ if (mas_preallocate(&mas, GFP_KERNEL)) {
pr_warn("Allocation of vma tree for process %d failed\n",
current->pid);
return -ENOMEM;
@@ -633,7 +633,7 @@ static int delete_vma_from_mm(struct vm_area_struct *vma)
{
MA_STATE(mas, &vma->vm_mm->mm_mt, 0, 0);

- if (mas_preallocate(&mas, vma, GFP_KERNEL)) {
+ if (mas_preallocate(&mas, GFP_KERNEL)) {
pr_warn("Allocation of vma tree for process %d failed\n",
current->pid);
return -ENOMEM;
@@ -1081,7 +1081,7 @@ unsigned long do_mmap(struct file *file,
if (!vma)
goto error_getting_vma;

- if (mas_preallocate(&mas, vma, GFP_KERNEL))
+ if (mas_preallocate(&mas, GFP_KERNEL))
goto error_maple_preallocate;

region->vm_usage = 1;
@@ -1358,7 +1358,7 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
if (!new)
goto err_vma_dup;

- if (mas_preallocate(&mas, vma, GFP_KERNEL)) {
+ if (mas_preallocate(&mas, GFP_KERNEL)) {
pr_warn("Allocation of vma tree for process %d failed\n",
current->pid);
goto err_mas_preallocate;
--
2.25.1

Next message: David Hildenbrand: "Re: [PATCH 2/2] mm: slince possible data races about pgdat->kswapd"
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Next in thread: Liam Howlett: "Re: [PATCH -next] Maple Tree: remove not used entry in mas_preallocate()"
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