hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

metag: hugetlbpage: Remove null pointer checks that could never happen 

There are inconsistent NULL checks in
hugetlb_get_unmapped_area_existing(). The last conditional block in the
loop checks vma, but vma is dereferenced after that.

Due to the checks above however (bearing in mind after_huge is either 0
or 1) vma is guaranteed not to be NULL here, so remove that part of the
check.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
[james.hogan@imgtec.com: remove brackets and expand commit message]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
This commit is contained in:
Rickard Strandqvist 2014-05-30 01:11:58 +02:00 committed by James Hogan
parent 7171511eae
commit 8bc613befa
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/metag/mm/hugetlbpage.c
View File

@ -173,7 +173,7 @@ new_search:
mm->context.part_huge = 0;
return addr;
}
if (vma && (vma->vm_flags & MAP_HUGETLB)) {
if (vma->vm_flags & MAP_HUGETLB) {
/* space after a huge vma in 2nd level page table? */
if (vma->vm_end & HUGEPT_MASK) {
after_huge = 1;