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Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c32
1 files changed, 7 insertions, 25 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index a2b1efc20928..1cd7d581b3b2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -423,7 +423,12 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
mapping->i_mmap_writable++;
flush_dcache_mmap_lock(mapping);
/* insert tmp into the share list, just after mpnt */
- vma_prio_tree_add(tmp, mpnt);
+ if (unlikely(tmp->vm_flags & VM_NONLINEAR))
+ vma_nonlinear_insert(tmp,
+ &mapping->i_mmap_nonlinear);
+ else
+ vma_interval_tree_insert_after(tmp, mpnt,
+ &mapping->i_mmap);
flush_dcache_mmap_unlock(mapping);
mutex_unlock(&mapping->i_mmap_mutex);
}
@@ -622,26 +627,6 @@ 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)
@@ -649,15 +634,13 @@ 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)
{
struct file *exe_file;
- /* We need mmap_sem to protect against races with removal of
- * VM_EXECUTABLE vmas */
+ /* We need mmap_sem to protect against races with removal of exe_file */
down_read(&mm->mmap_sem);
exe_file = mm->exe_file;
if (exe_file)
@@ -1078,7 +1061,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
init_rwsem(&sig->group_rwsem);
#endif
- sig->oom_adj = current->signal->oom_adj;
sig->oom_score_adj = current->signal->oom_score_adj;
sig->oom_score_adj_min = current->signal->oom_score_adj_min;