linux-kernel - [RFC PATCH 1/6] mm/mmap: Move exit

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Message-ID: <20250815191031.3769540-2-Liam.Howlett@oracle.com>
Date: Fri, 15 Aug 2025 15:10:26 -0400
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: David Hildenbrand <david@...hat.com>,
        Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Vlastimil Babka <vbabka@...e.cz>,
        Mike Rapoport <rppt@...nel.org>,
        Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jann Horn <jannh@...gle.com>, Pedro Falcato <pfalcato@...e.de>,
        Charan Teja Kalla <quic_charante@...cinc.com>,
        shikemeng@...weicloud.com, kasong@...cent.com, nphamcs@...il.com,
        bhe@...hat.com, baohua@...nel.org, chrisl@...nel.org,
        Matthew Wilcox <willy@...radead.org>,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>
Subject: [RFC PATCH 1/6] mm/mmap: Move exit_mmap() trace point

Move the trace point later in the function so that it is not skipped in
the event of a failed fork.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 mm/mmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index 7306253cc3b57..c4c315b480af7 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1310,9 +1310,9 @@ void exit_mmap(struct mm_struct *mm)
 
 	BUG_ON(count != mm->map_count);
 
-	trace_exit_mmap(mm);
 destroy:
 	__mt_destroy(&mm->mm_mt);
+	trace_exit_mmap(mm);
 	mmap_write_unlock(mm);
 	vm_unacct_memory(nr_accounted);
 }
-- 
2.47.2