* [merged] mm-mmap-leverage-vma_rb_erase_ignore-to-implement-vma_rb_erase.patch removed from -mm tree
@ 2020-10-14 21:00 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2020-10-14 21:00 UTC (permalink / raw)
To: akpm, mm-commits, richard.weiyang
The patch titled
Subject: mm/mmap: leverage vma_rb_erase_ignore() to implement vma_rb_erase()
has been removed from the -mm tree. Its filename was
mm-mmap-leverage-vma_rb_erase_ignore-to-implement-vma_rb_erase.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: mm/mmap: leverage vma_rb_erase_ignore() to implement vma_rb_erase()
These two functions share the same logic except ignore a different vma.
Let's reuse the code.
Link: https://lkml.kernel.org/r/20200809232057.23477-2-richard.weiyang@linux.alibaba.com
Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/mmap.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
--- a/mm/mmap.c~mm-mmap-leverage-vma_rb_erase_ignore-to-implement-vma_rb_erase
+++ a/mm/mmap.c
@@ -474,8 +474,12 @@ static __always_inline void vma_rb_erase
{
/*
* All rb_subtree_gap values must be consistent prior to erase,
- * with the possible exception of the "next" vma being erased if
- * next->vm_start was reduced.
+ * with the possible exception of
+ *
+ * a. the "next" vma being erased if next->vm_start was reduced in
+ * __vma_adjust() -> __vma_unlink()
+ * b. the vma being erased in detach_vmas_to_be_unmapped() ->
+ * vma_rb_erase()
*/
validate_mm_rb(root, ignore);
@@ -485,13 +489,7 @@ static __always_inline void vma_rb_erase
static __always_inline void vma_rb_erase(struct vm_area_struct *vma,
struct rb_root *root)
{
- /*
- * All rb_subtree_gap values must be consistent prior to erase,
- * with the possible exception of the vma being erased.
- */
- validate_mm_rb(root, vma);
-
- __vma_rb_erase(vma, root);
+ vma_rb_erase_ignore(vma, root, vma);
}
/*
_
Patches currently in -mm which might be from richard.weiyang@linux.alibaba.com are
mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle.patch
bitops-simplify-get_count_order_long.patch
bitops-use-the-same-mechanism-for-get_count_order.patch
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-10-14 21:01 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-10-14 21:00 [merged] mm-mmap-leverage-vma_rb_erase_ignore-to-implement-vma_rb_erase.patch removed from -mm tree akpm
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).