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From: Barret Rhoden <brho@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Dan Williams <dan.j.williams@intel.com>,
	David Hildenbrand <david@redhat.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: linux-nvdimm@lists.01.org, x86@kernel.org, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org, yu.c.zhang@intel.com,
	yi.z.zhang@intel.com
Subject: [PATCH v3 3/3] kvm: remove redundant PageReserved() check
Date: Thu,  4 Apr 2019 16:23:45 -0400
Message-ID: <20190404202345.133553-4-brho@google.com> (raw)
In-Reply-To: <20190404202345.133553-1-brho@google.com>

kvm_is_reserved_pfn() already checks PageReserved().

Signed-off-by: Barret Rhoden <brho@google.com>
Reviewed-by: David Hildenbrand <david@redhat.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 55fe8e20d8fd..c44985375e7f 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1782,12 +1782,8 @@ 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);
 
-- 
2.21.0.392.gf8f6787159e-goog


  parent reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-04 20:23 [PATCH v3 0/3] kvm: Use huge pages for DAX-backed files Barret Rhoden
2019-04-04 20:23 ` [PATCH v3 1/3] mm: make dev_pagemap_mapping_shift() externally visible Barret Rhoden
2019-04-04 20:23 ` [PATCH v3 2/3] kvm: Use huge pages for DAX-backed files Barret Rhoden
2019-04-04 20:23 ` Barret Rhoden [this message]
2019-04-04 20:37   ` [PATCH v3 3/3] kvm: remove redundant PageReserved() check David Hildenbrand
2019-04-04 20:28 ` [PATCH v3 0/3] kvm: Use huge pages for DAX-backed files Barret Rhoden

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