Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Tested-by: Ackerley Tng <ackerleytng@google.com>
Reviewed-by: Shivank Garg <shivankg@amd.com>
Tested-by: Shivank Garg <shivankg@amd.com>
Link: https://lore.kernel.org/r/20251016172853.52451-3-seanjc@google.com
[sean: drop .clang-format change]
Signed-off-by: Sean Christopherson <seanjc@google.com>
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virt/kvm/guest_memfd.c
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virt/kvm/guest_memfd.c
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struct list_head entry;
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};
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#define kvm_gmem_for_each_file(f, mapping) \
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list_for_each_entry(f, &(mapping)->i_private_list, entry)
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/**
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* folio_file_pfn - like folio_file_page, but return a pfn.
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* @folio: The folio which contains this index.
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static void kvm_gmem_invalidate_begin(struct inode *inode, pgoff_t start,
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pgoff_t end)
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{
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struct list_head *gmem_list = &inode->i_mapping->i_private_list;
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enum kvm_gfn_range_filter attr_filter;
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struct gmem_file *f;
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attr_filter = kvm_gmem_get_invalidate_filter(inode);
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list_for_each_entry(f, gmem_list, entry)
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kvm_gmem_for_each_file(f, inode->i_mapping)
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__kvm_gmem_invalidate_begin(f, start, end, attr_filter);
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}
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···
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static void kvm_gmem_invalidate_end(struct inode *inode, pgoff_t start,
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pgoff_t end)
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{
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struct list_head *gmem_list = &inode->i_mapping->i_private_list;
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struct gmem_file *f;
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list_for_each_entry(f, gmem_list, entry)
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kvm_gmem_for_each_file(f, inode->i_mapping)
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__kvm_gmem_invalidate_end(f, start, end);
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}
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