[PATCH v2 3/3] kvm: remove redundant PageReserved() check

From: Barret Rhoden <brho@google.com>
To: "Dan Williams" <dan.j.williams@intel.com>,
	"Dave Jiang" <dave.jiang@intel.com>,
	"Ross Zwisler" <zwisler@kernel.org>,
	"Vishal Verma" <vishal.l.verma@intel.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Borislav Petkov" <bp@alien8.de>
Cc: linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org,
	"H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, kvm@vger.kernel.org, yu.c.zhang@intel.com,
	yi.z.zhang@intel.com
Subject: [PATCH v2 3/3] kvm: remove redundant PageReserved() check
Date: Wed, 14 Nov 2018 16:51:55 -0500	[thread overview]
Message-ID: <20181114215155.259978-4-brho@google.com> (raw)
In-Reply-To: <20181114215155.259978-1-brho@google.com>

kvm_is_reserved_pfn() already checks PageReserved().

Signed-off-by: Barret Rhoden <brho@google.com>
---
 virt/kvm/kvm_main.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 2679e476b6c3..e0ea6d7dac14 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1700,12 +1700,8 @@ EXPORT_SYMBOL_GPL(kvm_release_pfn_dirty);
 
 void kvm_set_pfn_dirty(kvm_pfn_t pfn)
 {
-	if (!kvm_is_reserved_pfn(pfn)) {
-		struct page *page = pfn_to_page(pfn);
-
-		if (!PageReserved(page))
-			SetPageDirty(page);
-	}
+	if (!kvm_is_reserved_pfn(pfn))
+		SetPageDirty(pfn_to_page(pfn));
 }
 EXPORT_SYMBOL_GPL(kvm_set_pfn_dirty);
 
-- 
2.19.1.1215.g8438c0b245-goog

