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authorAndrew Morton <akpm@linux-foundation.org>2018-08-21 21:53:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 10:52:44 -0700
commita670468f5e0b5fad4db6e4d195f15915dc2a35c1 (patch)
tree57540edd0f9f24335154139c17695a13b594fe58 /mm
parenta3bf6ce366496016990d8578af74673ea04178ff (diff)
downloadlinux-stericsson-a670468f5e0b5fad4db6e4d195f15915dc2a35c1.tar.gz
mm: zero out the vma in vma_init()
Rather than in vm_area_alloc(). To ensure that the various oddball stack-based vmas are in a good state. Some of the callers were zeroing them out, others were not. Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mempolicy.c1
-rw-r--r--mm/shmem.c1
2 files changed, 0 insertions, 2 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 01f1a14facc4..4861ba738d6f 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2504,7 +2504,6 @@ void mpol_shared_policy_init(struct shared_policy *sp, struct mempolicy *mpol)
goto put_new;
/* Create pseudo-vma that contains just the policy */
- memset(&pvma, 0, sizeof(struct vm_area_struct));
vma_init(&pvma, NULL);
pvma.vm_end = TASK_SIZE; /* policy covers entire file */
mpol_set_shared_policy(sp, &pvma, new); /* adds ref */
diff --git a/mm/shmem.c b/mm/shmem.c
index c48c79018a7c..fb04baacc9fa 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1421,7 +1421,6 @@ static void shmem_pseudo_vma_init(struct vm_area_struct *vma,
struct shmem_inode_info *info, pgoff_t index)
{
/* Create a pseudo vma that just contains the policy */
- memset(vma, 0, sizeof(*vma));
vma_init(vma, NULL);
/* Bias interleave by inode number to distribute better across nodes */
vma->vm_pgoff = index + info->vfs_inode.i_ino;