From mboxrd@z Thu Jan 1 00:00:00 1970 From: jglisse@redhat.com Subject: [PATCH v5 1/9] mm/mmu_notifier: helper to test if a range invalidation is blockable Date: Tue, 19 Feb 2019 15:04:22 -0500 Message-ID: <20190219200430.11130-2-jglisse@redhat.com> References: <20190219200430.11130-1-jglisse@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190219200430.11130-1-jglisse@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-mm@kvack.org, Andrew Morton Cc: linux-kernel@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , =?UTF-8?q?Christian=20K=C3=B6nig?= , Joonas Lahtinen , Jani Nikula , Rodrigo Vivi , Jan Kara , Andrea Arcangeli , Peter Xu , Felix Kuehling , Jason Gunthorpe , Ross Zwisler , Dan Williams , Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Michal Hocko , Ralph Campbell , John Hubbard , kvm@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org From: Jérôme Glisse Simple helpers to test if range invalidation is blockable. Latter patches use cocinnelle to convert all direct dereference of range-> blockable to use this function instead so that we can convert the blockable field to an unsigned for more flags. Signed-off-by: Jérôme Glisse Cc: Christian König Cc: Joonas Lahtinen Cc: Jani Nikula Cc: Rodrigo Vivi Cc: Jan Kara Cc: Andrea Arcangeli Cc: Peter Xu Cc: Felix Kuehling Cc: Jason Gunthorpe Cc: Andrew Morton Cc: Ross Zwisler Cc: Dan Williams Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Michal Hocko Cc: Christian Koenig Cc: Ralph Campbell Cc: John Hubbard Cc: kvm@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-rdma@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: Arnd Bergmann --- include/linux/mmu_notifier.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index 4050ec1c3b45..e630def131ce 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -226,6 +226,12 @@ extern void __mmu_notifier_invalidate_range_end(struct mmu_notifier_range *r, extern void __mmu_notifier_invalidate_range(struct mm_struct *mm, unsigned long start, unsigned long end); +static inline bool +mmu_notifier_range_blockable(const struct mmu_notifier_range *range) +{ + return range->blockable; +} + static inline void mmu_notifier_release(struct mm_struct *mm) { if (mm_has_notifiers(mm)) @@ -455,6 +461,11 @@ static inline void _mmu_notifier_range_init(struct mmu_notifier_range *range, #define mmu_notifier_range_init(range, mm, start, end) \ _mmu_notifier_range_init(range, start, end) +static inline bool +mmu_notifier_range_blockable(const struct mmu_notifier_range *range) +{ + return true; +} static inline int mm_has_notifiers(struct mm_struct *mm) { -- 2.17.2