From: Sergei Trofimovich <slyfox@gentoo.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
Sergei Trofimovich <slyfox@gentoo.org>,
linux-mm@kvack.org
Subject: [PATCH] mm: page_owner: fetch backtrace only for tracked pages
Date: Thu, 1 Apr 2021 22:24:45 +0100 [thread overview]
Message-ID: <20210401212445.3534721-1-slyfox@gentoo.org> (raw)
Very minor optimization.
CC: Andrew Morton <akpm@linux-foundation.org>
CC: linux-mm@kvack.org
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
---
mm/page_owner.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 63e4ecaba97b..7147fd34a948 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -140,14 +140,14 @@ void __reset_page_owner(struct page *page, unsigned int order)
{
int i;
struct page_ext *page_ext;
- depot_stack_handle_t handle = 0;
+ depot_stack_handle_t handle;
struct page_owner *page_owner;
- handle = save_stack(GFP_NOWAIT | __GFP_NOWARN);
-
page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return;
+
+ handle = save_stack(GFP_NOWAIT | __GFP_NOWARN);
for (i = 0; i < (1 << order); i++) {
__clear_bit(PAGE_EXT_OWNER_ALLOCATED, &page_ext->flags);
page_owner = get_page_owner(page_ext);
--
2.31.1
next reply other threads:[~2021-04-01 21:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 21:24 Sergei Trofimovich [this message]
2021-04-07 15:49 ` [PATCH] mm: page_owner: fetch backtrace only for tracked pages Vlastimil Babka
2021-04-07 22:47 ` Sergei Trofimovich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210401212445.3534721-1-slyfox@gentoo.org \
--to=slyfox@gentoo.org \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.