diff mbox series

[v12,04/84] KVM: Allow calling kvm_release_page_{clean,dirty}() on a NULL page pointer

Message ID 20240726235234.228822-5-seanjc@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: Stop grabbing references to PFNMAP'd pages | expand

Commit Message

Sean Christopherson July 26, 2024, 11:51 p.m. UTC 
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.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 virt/kvm/kvm_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Alex Bennée Aug. 1, 2024, 9:03 a.m. UTC | #1 
Sean Christopherson <seanjc@google.com> writes:

> 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.
>
> Signed-off-by: Sean Christopherson <seanjc@google.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
diff mbox series

Patch

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index fd8c212b8de7..656e931ac39e 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3186,7 +3186,7 @@  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);
@@ -3211,7 +3211,7 @@  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);