linux-kernel - [PATCH 11/13] xen/gntdev: update to new mmu

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Message-Id: <20170831211738.17922-12-jglisse@redhat.com>
Date:   Thu, 31 Aug 2017 17:17:36 -0400
From:   jglisse@...hat.com
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org,
        Jérôme Glisse <jglisse@...hat.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Roger Pau Monné <roger.pau@...rix.com>,
        xen-devel@...ts.xenproject.org (moderated for non-subscribers),
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrea Arcangeli <aarcange@...hat.com>
Subject: [PATCH 11/13] xen/gntdev: update to new mmu_notifier semantic

From: Jérôme Glisse <jglisse@...hat.com>

Call to mmu_notifier_invalidate_page() are replaced by call to
mmu_notifier_invalidate_range() and thus call are bracketed by
call to mmu_notifier_invalidate_range_start()/end()

Remove now useless invalidate_page callback.

Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Roger Pau Monné <roger.pau@...rix.com>
Cc: xen-devel@...ts.xenproject.org (moderated for non-subscribers)
Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrea Arcangeli <aarcange@...hat.com>
---
 drivers/xen/gntdev.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index f3bf8f4e2d6c..82360594fa8e 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -484,13 +484,6 @@ static void mn_invl_range_start(struct mmu_notifier *mn,
 	mutex_unlock(&priv->lock);
 }
 
-static void mn_invl_page(struct mmu_notifier *mn,
-			 struct mm_struct *mm,
-			 unsigned long address)
-{
-	mn_invl_range_start(mn, mm, address, address + PAGE_SIZE);
-}
-
 static void mn_release(struct mmu_notifier *mn,
 		       struct mm_struct *mm)
 {
@@ -522,7 +515,6 @@ static void mn_release(struct mmu_notifier *mn,
 
 static const struct mmu_notifier_ops gntdev_mmu_ops = {
 	.release                = mn_release,
-	.invalidate_page        = mn_invl_page,
 	.invalidate_range_start = mn_invl_range_start,
 };
 
-- 
2.13.5