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Message-ID: <20251007221420.344669-3-seanjc@google.com>
Date: Tue, 7 Oct 2025 15:14:10 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>,
Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <seanjc@...gle.com>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
David Hildenbrand <david@...hat.com>, Fuad Tabba <tabba@...gle.com>,
Ackerley Tng <ackerleytng@...gle.com>, Shivank Garg <shivankg@....com>,
Ashish Kalra <ashish.kalra@....com>, Vlastimil Babka <vbabka@...e.cz>
Subject: [PATCH v12 02/12] KVM: guest_memfd: Add macro to iterate over
gmem_files for a mapping/inode
Add a kvm_gmem_for_each_file() to make it more obvious that KVM is
iterating over guest_memfd _files_, not guest_memfd instances, as could
be assumed given the name "gmem_list".
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
virt/kvm/guest_memfd.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c
index 3c57fb42f12c..9b9e239b3073 100644
--- a/virt/kvm/guest_memfd.c
+++ b/virt/kvm/guest_memfd.c
@@ -22,6 +22,9 @@ struct gmem_file {
struct list_head entry;
};
+#define kvm_gmem_for_each_file(f, mapping) \
+ list_for_each_entry(f, &(mapping)->i_private_list, entry)
+
/**
* folio_file_pfn - like folio_file_page, but return a pfn.
* @folio: The folio which contains this index.
@@ -159,13 +162,12 @@ static void __kvm_gmem_invalidate_begin(struct gmem_file *f, pgoff_t start,
static void kvm_gmem_invalidate_begin(struct inode *inode, pgoff_t start,
pgoff_t end)
{
- struct list_head *gmem_list = &inode->i_mapping->i_private_list;
enum kvm_gfn_range_filter attr_filter;
struct gmem_file *f;
attr_filter = kvm_gmem_get_invalidate_filter(inode);
- list_for_each_entry(f, gmem_list, entry)
+ kvm_gmem_for_each_file(f, inode->i_mapping)
__kvm_gmem_invalidate_begin(f, start, end, attr_filter);
}
@@ -184,10 +186,9 @@ static void __kvm_gmem_invalidate_end(struct gmem_file *f, pgoff_t start,
static void kvm_gmem_invalidate_end(struct inode *inode, pgoff_t start,
pgoff_t end)
{
- struct list_head *gmem_list = &inode->i_mapping->i_private_list;
struct gmem_file *f;
- list_for_each_entry(f, gmem_list, entry)
+ kvm_gmem_for_each_file(f, inode->i_mapping)
__kvm_gmem_invalidate_end(f, start, end);
}
--
2.51.0.710.ga91ca5db03-goog
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