NVDIMM Device and Persistent Memory development
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From: Mike Rapoport <rppt@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	Andy Lutomirski <luto@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Borislav Petkov <bp@alien8.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christopher Lameter <cl@linux.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	David Hildenbrand <david@redhat.com>,
	Elena Reshetova <elena.reshetova@intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
	James Bottomley <jejb@linux.ibm.com>,
	"Kirill A. Shutemov" <kirill@shutemov.name>,
	Matthew Wilcox <willy@infradead.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Mike Rapoport <rppt@linux.ibm.com>,
	Mike Rapoport <rppt@kernel.org>,
	Michael Kerrisk <mtk.manpages@gmail.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Rick Edgecombe <rick.p.edgecombe@intel.com>,
	Shuah Khan <shuah@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Tycho Andersen <tycho@tycho.ws>, Will Deacon <will@kernel.org>,
	linux-api@vger.ker nel.org, linux-arch@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org,
Subject: [PATCH v7 2/7] mmap: make mlock_future_check() global
Date: Mon, 26 Oct 2020 10:37:47 +0200
Message-ID: <20201026083752.13267-3-rppt@kernel.org> (raw)
In-Reply-To: <20201026083752.13267-1-rppt@kernel.org>

From: Mike Rapoport <rppt@linux.ibm.com>

It will be used by the upcoming secret memory implementation.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
 mm/internal.h | 3 +++
 mm/mmap.c     | 5 ++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/mm/internal.h b/mm/internal.h
index c43ccdddb0f6..ae146a260b14 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -348,6 +348,9 @@ static inline void munlock_vma_pages_all(struct vm_area_struct *vma)
 extern void mlock_vma_page(struct page *page);
 extern unsigned int munlock_vma_page(struct page *page);
+extern int mlock_future_check(struct mm_struct *mm, unsigned long flags,
+			      unsigned long len);
  * Clear the page's PageMlocked().  This can be useful in a situation where
  * we want to unconditionally remove a page from the pagecache -- e.g.,
diff --git a/mm/mmap.c b/mm/mmap.c
index d91ecb00d38c..d166ad427882 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1348,9 +1348,8 @@ static inline unsigned long round_hint_to_min(unsigned long hint)
 	return hint;
-static inline int mlock_future_check(struct mm_struct *mm,
-				     unsigned long flags,
-				     unsigned long len)
+int mlock_future_check(struct mm_struct *mm, unsigned long flags,
+		       unsigned long len)
 	unsigned long locked, lock_limit;
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  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-26  8:37 [PATCH v7 0/7] mm: introduce memfd_secret system call to create "secret" memory areas Mike Rapoport
2020-10-26  8:37 ` [PATCH v7 1/7] mm: add definition of PMD_PAGE_ORDER Mike Rapoport
2020-10-27  8:26   ` David Hildenbrand
2020-10-26  8:37 ` Mike Rapoport [this message]
2020-10-26  8:37 ` [PATCH v7 3/7] set_memory: allow set_direct_map_*_noflush() for multiple pages Mike Rapoport
2020-10-26 19:01   ` Edgecombe, Rick P
2020-10-27  8:12     ` David Hildenbrand
2020-10-27  9:48       ` Mike Rapoport
2020-10-26  8:37 ` [PATCH v7 4/7] mm: introduce memfd_secret system call to create "secret" memory areas Mike Rapoport
2020-10-26  8:37 ` [PATCH v7 5/7] arch, mm: wire up memfd_secret system call were relevant Mike Rapoport
2020-10-26  8:37 ` [PATCH v7 6/7] mm: secretmem: use PMD-size pages to amortize direct map fragmentation Mike Rapoport
2020-10-26  8:37 ` [PATCH v7 7/7] secretmem: test: add basic selftest for memfd_secret(2) Mike Rapoport

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