[merged mm-stable] mm-vmalloc-remove-the-redundant-boundary-check.patch removed from -mm tree

[merged mm-stable] mm-vmalloc-remove-the-redundant-boundary-check.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/vmalloc: remove the redundant boundary check
has been removed from the -mm tree.  Its filename was
     mm-vmalloc-remove-the-redundant-boundary-check.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Baoquan He <bhe@redhat.com>
Subject: mm/vmalloc: remove the redundant boundary check
Date: Tue, 7 Jun 2022 18:59:56 +0800

In find_va_links(), when traversing the vmap_area tree, the comparing to
check if the passed in 'va' is above or below 'tmp_va' is redundant,
assuming both 'va' and 'tmp_va' has ->va_start <= ->va_end.

Here, to simplify the checking as code change.

Link: https://lkml.kernel.org/r/20220607105958.382076-3-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmalloc.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/mm/vmalloc.c~mm-vmalloc-remove-the-redundant-boundary-check
+++ a/mm/vmalloc.c
@@ -874,11 +874,9 @@ find_va_links(struct vmap_area *va,
 		 * Trigger the BUG() if there are sides(left/right)
 		 * or full overlaps.
 		 */
-		if (va->va_start < tmp_va->va_end &&
-				va->va_end <= tmp_va->va_start)
+		if (va->va_end <= tmp_va->va_start)
 			link = &(*link)->rb_left;
-		else if (va->va_end > tmp_va->va_start &&
-				va->va_start >= tmp_va->va_end)
+		else if (va->va_start >= tmp_va->va_end)
 			link = &(*link)->rb_right;
 		else {
 			WARN(1, "vmalloc bug: 0x%lx-0x%lx overlaps with 0x%lx-0x%lx\n",
_

Patches currently in -mm which might be from bhe@redhat.com are