Commit 66071896 authored by Liam Howlett's avatar Liam Howlett Committed by Andrew Morton
Browse files

mm/mlock: drop dead code in count_mm_mlocked_page_nr() 

The check for mm being null has never been needed since the only caller
has always passed in current->mm.  Remove the check from
count_mm_mlocked_page_nr().

Link: https://lkml.kernel.org/r/20220615174050.738523-1-Liam.Howlett@oracle.com


Signed-off-by: default avatarLiam R. Howlett <Liam.Howlett@oracle.com>
Suggested-by: default avatarLukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent c154124f

mm/mlock.c

+1 −3
Original line number Diff line number Diff line
@@ -531,14 +531,12 @@ static unsigned long count_mm_mlocked_page_nr(struct mm_struct *mm, 
	unsigned long end;

	VMA_ITERATOR(vmi, mm, start);



	if (mm == NULL)

		mm = current->mm;



	/* Don't overflow past ULONG_MAX */

	if (unlikely(ULONG_MAX - len < start))

		end = ULONG_MAX;

	else

		end = start + len;



	for_each_vma_range(vmi, vma, end) {

		if (vma->vm_flags & VM_LOCKED) {

			if (start > vma->vm_start)