The patch titled
Subject: mm, slub: only disable irq with spin_lock in __unfreeze_partials()
has been removed from the -mm tree. Its filename was
mm-slub-only-disable-irq-with-spin_lock-in-__unfreeze_partials.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm, slub: only disable irq with spin_lock in __unfreeze_partials()
__unfreeze_partials() no longer needs to have irqs disabled, except for
making the spin_lock operations irq-safe, so convert the spin_locks
operations and remove the separate irq handling.
Link: https://lkml.kernel.org/r/20210904105003.11688-26-vbabka@xxxxxxx
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Qian Cai <quic_qiancai@xxxxxxxxxxx>
Cc: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
--- a/mm/slub.c~mm-slub-only-disable-irq-with-spin_lock-in-__unfreeze_partials
+++ a/mm/slub.c
@@ -2352,9 +2352,7 @@ static void __unfreeze_partials(struct k
{
struct kmem_cache_node *n = NULL, *n2 = NULL;
struct page *page, *discard_page = NULL;
- unsigned long flags;
-
- local_irq_save(flags);
+ unsigned long flags = 0;
while (partial_page) {
struct page new;
@@ -2366,10 +2364,10 @@ static void __unfreeze_partials(struct k
n2 = get_node(s, page_to_nid(page));
if (n != n2) {
if (n)
- spin_unlock(&n->list_lock);
+ spin_unlock_irqrestore(&n->list_lock, flags);
n = n2;
- spin_lock(&n->list_lock);
+ spin_lock_irqsave(&n->list_lock, flags);
}
do {
@@ -2398,9 +2396,7 @@ static void __unfreeze_partials(struct k
}
if (n)
- spin_unlock(&n->list_lock);
-
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&n->list_lock, flags);
while (discard_page) {
page = discard_page;
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
