[PATCH v13 02/85] KVM: Allow calling kvm_release_page_{clean,dirty}() on a NULL page pointer

[Sean Christopherson]

Allow passing a NULL @page to kvm_release_page_{clean,dirty}(), there's no
tangible benefit to forcing the callers to pre-check @page, and it ends up
generating a lot of duplicate boilerplate code.

Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
Tested-by: Alex Bennée <alex.ben...@linaro.org>
Signed-off-by: Sean Christopherson <sea...@google.com>
---
 virt/kvm/kvm_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4b659a649dfa..2032292df0b0 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3179,7 +3179,7 @@ static void kvm_set_page_accessed(struct page *page)
 
 void kvm_release_page_clean(struct page *page)
 {
-       if (WARN_ON(!page))
+       if (!page)
                return;
 
        kvm_set_page_accessed(page);
@@ -3204,7 +3204,7 @@ EXPORT_SYMBOL_GPL(kvm_release_pfn_clean);
 
 void kvm_release_page_dirty(struct page *page)
 {
-       if (WARN_ON(!page))
+       if (!page)
                return;
 
        kvm_set_page_dirty(page);
-- 
2.47.0.rc1.288.g06298d1525-goog