From 20831cd6f814eade5e2fffce41352d8e8de1e764 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Fri, 30 Aug 2024 00:01:00 -0400 Subject: [PATCH] mm/vma: drop incorrect comment from vms_gather_munmap_vmas() The comment has been outdated since 6b73cff239e52 ("mm: change munmap splitting order and move_vma()"). The move_vma() was altered to fix the fragile state of the accounting since then. Link: https://lkml.kernel.org/r/20240830040101.822209-21-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett Reviewed-by: Lorenzo Stoakes Cc: Bert Karwatzki Cc: Jeff Xu Cc: Jiri Olsa Cc: Kees Cook Cc: Lorenzo Stoakes Cc: Mark Brown Cc: Matthew Wilcox Cc: "Paul E. McKenney" Cc: Paul Moore Cc: Sidhartha Kumar Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/vma.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/mm/vma.c b/mm/vma.c index 3350fe2088bc..1736bb237b2c 100644 --- a/mm/vma.c +++ b/mm/vma.c @@ -755,13 +755,8 @@ int vms_gather_munmap_vmas(struct vma_munmap_struct *vms, /* * If we need to split any vma, do it now to save pain later. - * - * Note: mremap's move_vma VM_ACCOUNT handling assumes a partially - * unmapped vm_area_struct will remain in use: so lower split_vma - * places tmp vma above, and higher split_vma places tmp vma below. + * Does it split the first one? */ - - /* Does it split the first one? */ if (vms->start > vms->vma->vm_start) { /*