+ mm-vmalloc-extend-find_vmap_lowest_match_check-with-extra-arguments.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/vmalloc: extend find_vmap_lowest_match_check with extra arguments
has been added to the -mm mm-unstable branch.  Its filename is
     mm-vmalloc-extend-find_vmap_lowest_match_check-with-extra-arguments.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmalloc-extend-find_vmap_lowest_match_check-with-extra-arguments.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Song Liu <song@kernel.org>
Subject: mm/vmalloc: extend find_vmap_lowest_match_check with extra arguments
Date: Tue, 30 Aug 2022 22:27:34 -0700

find_vmap_lowest_match() is now able to handle different roots.  Make
similar changes to find_vmap_lowest_match_check() and
find_vmap_lowest_linear_match() to handle different trees.

Link: https://lkml.kernel.org/r/20220831052734.3423079-1-song@kernel.org
Fixes: f9863be49312 ("mm/vmalloc: extend __alloc_vmap_area() with extra arguments")
Signed-off-by: Song Liu <song@kernel.org>
Reviewed-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmalloc.c |   13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

--- a/mm/vmalloc.c~mm-vmalloc-extend-find_vmap_lowest_match_check-with-extra-arguments
+++ a/mm/vmalloc.c
@@ -1300,12 +1300,12 @@ find_vmap_lowest_match(struct rb_root *r
 #include <linux/random.h>
 
 static struct vmap_area *
-find_vmap_lowest_linear_match(unsigned long size,
+find_vmap_lowest_linear_match(struct list_head *head, unsigned long size,
 	unsigned long align, unsigned long vstart)
 {
 	struct vmap_area *va;
 
-	list_for_each_entry(va, &free_vmap_area_list, list) {
+	list_for_each_entry(va, head, list) {
 		if (!is_within_this_va(va, size, align, vstart))
 			continue;
 
@@ -1316,7 +1316,8 @@ find_vmap_lowest_linear_match(unsigned l
 }
 
 static void
-find_vmap_lowest_match_check(unsigned long size, unsigned long align)
+find_vmap_lowest_match_check(struct rb_root *root, struct list_head *head,
+			     unsigned long size, unsigned long align)
 {
 	struct vmap_area *va_1, *va_2;
 	unsigned long vstart;
@@ -1325,8 +1326,8 @@ find_vmap_lowest_match_check(unsigned lo
 	get_random_bytes(&rnd, sizeof(rnd));
 	vstart = VMALLOC_START + rnd;
 
-	va_1 = find_vmap_lowest_match(size, align, vstart, false);
-	va_2 = find_vmap_lowest_linear_match(size, align, vstart);
+	va_1 = find_vmap_lowest_match(root, size, align, vstart, false);
+	va_2 = find_vmap_lowest_linear_match(head, size, align, vstart);
 
 	if (va_1 != va_2)
 		pr_emerg("not lowest: t: 0x%p, l: 0x%p, v: 0x%lx\n",
@@ -1513,7 +1514,7 @@ __alloc_vmap_area(struct rb_root *root,
 		return vend;
 
 #if DEBUG_AUGMENT_LOWEST_MATCH_CHECK
-	find_vmap_lowest_match_check(size, align);
+	find_vmap_lowest_match_check(root, head, size, align);
 #endif
 
 	return nva_start_addr;
_

Patches currently in -mm which might be from song@kernel.org are

mm-vmalloc-extend-find_vmap_lowest_match_check-with-extra-arguments.patch