From b85711b8915bc7608d360ede2e7c2bcb8ad113dc Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Thu, 9 Mar 2023 12:12:55 +0100 Subject: [PATCH] mm/mmap/vma_merge: rename adj_next to adj_start The variable 'adj_next' holds the value by which we adjust vm_start of a vma in variable 'adjust', that's either 'next' or 'mid', so the current name is inaccurate. Rename it to 'adj_start'. Link: https://lkml.kernel.org/r/20230309111258.24079-8-vbabka@suse.cz Signed-off-by: Vlastimil Babka Reviewed-by: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Matthew Wilcox (Oracle) Cc: Suren Baghdasaryan Signed-off-by: Andrew Morton --- mm/mmap.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index 2b72ff3f757c..73a8c270b6cb 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -917,7 +917,7 @@ struct vm_area_struct *vma_merge(struct vma_iterator *vmi, struct mm_struct *mm, bool vma_expanded = false; struct vma_prepare vp; unsigned long vma_end = end; - long adj_next = 0; + long adj_start = 0; unsigned long vma_start = addr; validate_mm(mm); @@ -986,7 +986,7 @@ struct vm_area_struct *vma_merge(struct vma_iterator *vmi, struct mm_struct *mm, remove = mid; } else { /* case 5 */ adjust = mid; - adj_next = (end - mid->vm_start); + adj_start = (end - mid->vm_start); } } } else if (merge_next) { @@ -994,7 +994,7 @@ struct vm_area_struct *vma_merge(struct vma_iterator *vmi, struct mm_struct *mm, if (prev && addr < prev->vm_end) { /* case 4 */ vma_end = addr; adjust = next; - adj_next = -(prev->vm_end - addr); + adj_start = -(prev->vm_end - addr); err = dup_anon_vma(next, prev); } else { vma = next; /* case 3 */ @@ -1022,7 +1022,7 @@ struct vm_area_struct *vma_merge(struct vma_iterator *vmi, struct mm_struct *mm, vp.anon_vma != adjust->anon_vma); vma_prepare(&vp); - vma_adjust_trans_huge(vma, vma_start, vma_end, adj_next); + vma_adjust_trans_huge(vma, vma_start, vma_end, adj_start); if (vma_start < vma->vm_start || vma_end > vma->vm_end) vma_expanded = true; @@ -1033,10 +1033,10 @@ struct vm_area_struct *vma_merge(struct vma_iterator *vmi, struct mm_struct *mm, if (vma_expanded) vma_iter_store(vmi, vma); - if (adj_next) { - adjust->vm_start += adj_next; - adjust->vm_pgoff += adj_next >> PAGE_SHIFT; - if (adj_next < 0) { + if (adj_start) { + adjust->vm_start += adj_start; + adjust->vm_pgoff += adj_start >> PAGE_SHIFT; + if (adj_start < 0) { WARN_ON(vma_expanded); vma_iter_store(vmi, next); } -- 2.50.1