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-rw-r--r--include/linux/mm.h4
-rw-r--r--include/linux/mm_types.h1
-rw-r--r--include/linux/mman.h1
-rw-r--r--kernel/fork.c21
-rw-r--r--mm/mmap.c25
-rw-r--r--mm/nommu.c11
6 files changed, 5 insertions, 58 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 44d3fc25f55..25ef49c1f2b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -87,7 +87,6 @@ extern unsigned int kobjsize(const void *objp);
#define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */
#define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */
-#define VM_EXECUTABLE 0x00001000
#define VM_LOCKED 0x00002000
#define VM_IO 0x00004000 /* Memory mapped I/O or similar */
@@ -1396,9 +1395,6 @@ extern void exit_mmap(struct mm_struct *);
extern int mm_take_all_locks(struct mm_struct *mm);
extern void mm_drop_all_locks(struct mm_struct *mm);
-/* From fs/proc/base.c. callers must _not_ hold the mm's exe_file_lock */
-extern void added_exe_file_vma(struct mm_struct *mm);
-extern void removed_exe_file_vma(struct mm_struct *mm);
extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file);
extern struct file *get_mm_exe_file(struct mm_struct *mm);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index bf7867200b9..58d3173eb36 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -394,7 +394,6 @@ struct mm_struct {
/* store ref to file /proc/<pid>/exe symlink points to */
struct file *exe_file;
- unsigned long num_exe_file_vmas;
#ifdef CONFIG_MMU_NOTIFIER
struct mmu_notifier_mm *mmu_notifier_mm;
#endif
diff --git a/include/linux/mman.h b/include/linux/mman.h
index 8b74e9b1d0a..77cec2f45cb 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -86,7 +86,6 @@ calc_vm_flag_bits(unsigned long flags)
{
return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) |
_calc_vm_trans(flags, MAP_DENYWRITE, VM_DENYWRITE ) |
- _calc_vm_trans(flags, MAP_EXECUTABLE, VM_EXECUTABLE) |
_calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED );
}
#endif /* __KERNEL__ */
diff --git a/kernel/fork.c b/kernel/fork.c
index a57a993681e..ec667f797af 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -622,26 +622,6 @@ void mmput(struct mm_struct *mm)
}
EXPORT_SYMBOL_GPL(mmput);
-/*
- * We added or removed a vma mapping the executable. The vmas are only mapped
- * during exec and are not mapped with the mmap system call.
- * Callers must hold down_write() on the mm's mmap_sem for these
- */
-void added_exe_file_vma(struct mm_struct *mm)
-{
- mm->num_exe_file_vmas++;
-}
-
-void removed_exe_file_vma(struct mm_struct *mm)
-{
- mm->num_exe_file_vmas--;
- if ((mm->num_exe_file_vmas == 0) && mm->exe_file) {
- fput(mm->exe_file);
- mm->exe_file = NULL;
- }
-
-}
-
void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file)
{
if (new_exe_file)
@@ -649,7 +629,6 @@ void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file)
if (mm->exe_file)
fput(mm->exe_file);
mm->exe_file = new_exe_file;
- mm->num_exe_file_vmas = 0;
}
struct file *get_mm_exe_file(struct mm_struct *mm)
diff --git a/mm/mmap.c b/mm/mmap.c
index d0686d35511..c1ad2e78ea5 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -231,11 +231,8 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
might_sleep();
if (vma->vm_ops && vma->vm_ops->close)
vma->vm_ops->close(vma);
- if (vma->vm_file) {
+ if (vma->vm_file)
fput(vma->vm_file);
- if (vma->vm_flags & VM_EXECUTABLE)
- removed_exe_file_vma(vma->vm_mm);
- }
mpol_put(vma_policy(vma));
kmem_cache_free(vm_area_cachep, vma);
return next;
@@ -636,8 +633,6 @@ again: remove_next = 1 + (end > next->vm_end);
if (file) {
uprobe_munmap(next, next->vm_start, next->vm_end);
fput(file);
- if (next->vm_flags & VM_EXECUTABLE)
- removed_exe_file_vma(mm);
}
if (next->anon_vma)
anon_vma_merge(vma, next);
@@ -1304,8 +1299,6 @@ munmap_back:
error = file->f_op->mmap(file, vma);
if (error)
goto unmap_and_free_vma;
- if (vm_flags & VM_EXECUTABLE)
- added_exe_file_vma(mm);
/* Can addr have changed??
*
@@ -1987,11 +1980,8 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
if (anon_vma_clone(new, vma))
goto out_free_mpol;
- if (new->vm_file) {
+ if (new->vm_file)
get_file(new->vm_file);
- if (vma->vm_flags & VM_EXECUTABLE)
- added_exe_file_vma(mm);
- }
if (new->vm_ops && new->vm_ops->open)
new->vm_ops->open(new);
@@ -2009,11 +1999,8 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
/* Clean everything up if vma_adjust failed. */
if (new->vm_ops && new->vm_ops->close)
new->vm_ops->close(new);
- if (new->vm_file) {
- if (vma->vm_flags & VM_EXECUTABLE)
- removed_exe_file_vma(mm);
+ if (new->vm_file)
fput(new->vm_file);
- }
unlink_anon_vmas(new);
out_free_mpol:
mpol_put(pol);
@@ -2408,12 +2395,8 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
new_vma->vm_start = addr;
new_vma->vm_end = addr + len;
new_vma->vm_pgoff = pgoff;
- if (new_vma->vm_file) {
+ if (new_vma->vm_file)
get_file(new_vma->vm_file);
-
- if (vma->vm_flags & VM_EXECUTABLE)
- added_exe_file_vma(mm);
- }
if (new_vma->vm_ops && new_vma->vm_ops->open)
new_vma->vm_ops->open(new_vma);
vma_link(mm, new_vma, prev, rb_link, rb_parent);
diff --git a/mm/nommu.c b/mm/nommu.c
index 98318dcff74..9c4a7b63a4d 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -789,11 +789,8 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
kenter("%p", vma);
if (vma->vm_ops && vma->vm_ops->close)
vma->vm_ops->close(vma);
- if (vma->vm_file) {
+ if (vma->vm_file)
fput(vma->vm_file);
- if (vma->vm_flags & VM_EXECUTABLE)
- removed_exe_file_vma(mm);
- }
put_nommu_region(vma->vm_region);
kmem_cache_free(vm_area_cachep, vma);
}
@@ -1284,10 +1281,6 @@ unsigned long do_mmap_pgoff(struct file *file,
if (file) {
region->vm_file = get_file(file);
vma->vm_file = get_file(file);
- if (vm_flags & VM_EXECUTABLE) {
- added_exe_file_vma(current->mm);
- vma->vm_mm = current->mm;
- }
}
down_write(&nommu_region_sem);
@@ -1440,8 +1433,6 @@ error:
kmem_cache_free(vm_region_jar, region);
if (vma->vm_file)
fput(vma->vm_file);
- if (vma->vm_flags & VM_EXECUTABLE)
- removed_exe_file_vma(vma->vm_mm);
kmem_cache_free(vm_area_cachep, vma);
kleave(" = %d", ret);
return ret;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 21:12:45 +0000