kvm: Use private inode list instead of i_private_list

Instead of using mapping->i_private_list use a list in private part of
the inode.

CC: kvm@vger.kernel.org
CC: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260326095354.16340-69-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c
index 017d84a7adf3724d34978bfa5b6963637bdb66cd..42b237491c4e9d281435352df18c2b5d95da272a 100644 (file)
--- a/virt/kvm/guest_memfd.c
+++ b/virt/kvm/guest_memfd.c
@@ -30,6 +30,7 @@ struct gmem_file {
 struct gmem_inode {
        struct shared_policy policy;
        struct inode vfs_inode;
+       struct list_head gmem_file_list;
 
        u64 flags;
 };
@@ -39,8 +40,8 @@ static __always_inline struct gmem_inode *GMEM_I(struct inode *inode)
        return container_of(inode, struct gmem_inode, vfs_inode);
 }
 
-#define kvm_gmem_for_each_file(f, mapping) \
-       list_for_each_entry(f, &(mapping)->i_private_list, entry)
+#define kvm_gmem_for_each_file(f, inode) \
+       list_for_each_entry(f, &GMEM_I(inode)->gmem_file_list, entry)
 
 /**
  * folio_file_pfn - like folio_file_page, but return a pfn.
@@ -202,7 +203,7 @@ static void kvm_gmem_invalidate_begin(struct inode *inode, pgoff_t start,
 
        attr_filter = kvm_gmem_get_invalidate_filter(inode);
 
-       kvm_gmem_for_each_file(f, inode->i_mapping)
+       kvm_gmem_for_each_file(f, inode)
                __kvm_gmem_invalidate_begin(f, start, end, attr_filter);
 }
 
@@ -223,7 +224,7 @@ static void kvm_gmem_invalidate_end(struct inode *inode, pgoff_t start,
 {
        struct gmem_file *f;
 
-       kvm_gmem_for_each_file(f, inode->i_mapping)
+       kvm_gmem_for_each_file(f, inode)
                __kvm_gmem_invalidate_end(f, start, end);
 }
 
@@ -609,7 +610,7 @@ static int __kvm_gmem_create(struct kvm *kvm, loff_t size, u64 flags)
        kvm_get_kvm(kvm);
        f->kvm = kvm;
        xa_init(&f->bindings);
-       list_add(&f->entry, &inode->i_mapping->i_private_list);
+       list_add(&f->entry, &GMEM_I(inode)->gmem_file_list);
 
        fd_install(fd, file);
        return fd;
@@ -945,6 +946,7 @@ static struct inode *kvm_gmem_alloc_inode(struct super_block *sb)
        mpol_shared_policy_init(&gi->policy, NULL);
 
        gi->flags = 0;
+       INIT_LIST_HEAD(&gi->gmem_file_list);
        return &gi->vfs_inode;
 }