diff mbox series

[v3,04/15] mm: Remove prev check from do_vmi_align_munmap()

Message ID 20230724183157.3939892-5-Liam.Howlett@oracle.com (mailing list archive)
State New
Headers show
Series Reduce preallocations for maple tree | expand

Commit Message

Liam R. Howlett July 24, 2023, 6:31 p.m. UTC 
If the prev does not exist, the vma iterator will be set to MAS_NONE,
which will be treated as a MAS_START when the mas_next or mas_find is
used.  In this case, the next caller will be the vma iterator, which
uses mas_find() under the hood and will now do what the user expects.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
---
 mm/mmap.c | 2 --
 1 file changed, 2 deletions(-)
diff mbox series

Patch

diff --git a/mm/mmap.c b/mm/mmap.c
index fa388eab8074..d4056d1de7fa 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2458,8 +2458,6 @@  do_vmi_align_munmap(struct vma_iterator *vmi, struct vm_area_struct *vma,
 	}
 
 	prev = vma_prev(vmi);
-	if (unlikely((!prev)))
-		vma_iter_set(vmi, start);
 
 	/*
 	 * Detach a range of VMAs from the mm. Using next as a temp variable as