From: Yang Shi <yang.shi@linux.alibaba.com>
To: akpm@linux-foundation.org
Cc: yang.shi@linux.alibaba.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Andy Lutomirski <luto@amacapital.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org
Subject: [RFC PATCH 8/8] x86: vma: pass atomic parameter to do_munmap()
Date: Wed, 21 Mar 2018 05:31:26 +0800 [thread overview]
Message-ID: <1521581486-99134-9-git-send-email-yang.shi@linux.alibaba.com> (raw)
In-Reply-To: <1521581486-99134-1-git-send-email-yang.shi@linux.alibaba.com>
It sounds unnecessary to release mmap_sem in the middle of unmmaping
vdso map.
This is API change only.
Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
---
arch/x86/entry/vdso/vma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
index 5b8b556..6359ae5 100644
--- a/arch/x86/entry/vdso/vma.c
+++ b/arch/x86/entry/vdso/vma.c
@@ -192,7 +192,7 @@ static int map_vdso(const struct vdso_image *image, unsigned long addr)
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
- do_munmap(mm, text_start, image->size, NULL);
+ do_munmap(mm, text_start, image->size, NULL, true);
} else {
current->mm->context.vdso = (void __user *)text_start;
current->mm->context.vdso_image = image;
--
1.8.3.1
prev parent reply other threads:[~2018-03-20 21:31 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-20 21:31 [RFC PATCH 0/8] Drop mmap_sem during unmapping large map Yang Shi
2018-03-20 21:31 ` [RFC PATCH 1/8] mm: mmap: unmap large mapping by section Yang Shi
2018-03-21 13:08 ` Michal Hocko
2018-03-21 16:31 ` Yang Shi
2018-03-21 17:29 ` Matthew Wilcox
2018-03-21 21:45 ` Yang Shi
2018-03-21 22:15 ` Matthew Wilcox
2018-03-21 22:40 ` Yang Shi
2018-03-21 22:46 ` Matthew Wilcox
2018-03-22 15:32 ` Laurent Dufour
2018-03-22 15:40 ` Matthew Wilcox
2018-03-22 15:54 ` Laurent Dufour
2018-03-22 16:05 ` Matthew Wilcox
2018-03-22 16:18 ` Laurent Dufour
2018-03-22 16:46 ` Yang Shi
2018-03-23 13:03 ` Laurent Dufour
2018-03-22 16:51 ` Matthew Wilcox
2018-03-22 16:49 ` Yang Shi
2018-03-22 17:34 ` Yang Shi
2018-03-22 18:48 ` Matthew Wilcox
2018-03-24 18:24 ` Jerome Glisse
2018-03-21 13:14 ` Michal Hocko
2018-03-21 16:50 ` Yang Shi
2018-03-21 17:16 ` Yang Shi
2018-03-21 21:23 ` Michal Hocko
2018-03-21 22:36 ` Yang Shi
2018-03-22 9:10 ` Michal Hocko
2018-03-22 16:06 ` Yang Shi
2018-03-22 16:12 ` Michal Hocko
2018-03-22 16:13 ` Matthew Wilcox
2018-03-22 16:28 ` Laurent Dufour
2018-03-22 16:36 ` David Laight
2018-03-20 21:31 ` [RFC PATCH 2/8] mm: mmap: pass atomic parameter to do_munmap() call sites Yang Shi
2018-03-20 21:31 ` [RFC PATCH 3/8] mm: mremap: pass atomic parameter to do_munmap() Yang Shi
2018-03-20 21:31 ` [RFC PATCH 4/8] mm: nommu: add " Yang Shi
2018-03-20 21:31 ` [RFC PATCH 5/8] ipc: shm: pass " Yang Shi
2018-03-20 21:31 ` [RFC PATCH 6/8] fs: proc/vmcore: " Yang Shi
2018-03-20 21:31 ` [RFC PATCH 7/8] x86: mpx: " Yang Shi
2018-03-20 22:35 ` Thomas Gleixner
2018-03-21 16:53 ` Yang Shi
2018-03-20 21:31 ` Yang Shi [this message]
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