shmem: move shmem_mapping out of line

[linux-2.6-block.git] / mm / shmem.c

diff --git a/mm/shmem.c b/mm/shmem.c
index d7c84ff621860b85090cf61d9b2970357da01b76..f607b0cab7e4e2a0b8593fc0ecc32e5579649bdd 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -254,7 +254,7 @@ static void shmem_inode_unacct_blocks(struct inode *inode, long pages)
 }
 
 static const struct super_operations shmem_ops;
-const struct address_space_operations shmem_aops;
+static const struct address_space_operations shmem_aops;
 static const struct file_operations shmem_file_operations;
 static const struct inode_operations shmem_inode_operations;
 static const struct inode_operations shmem_dir_inode_operations;
@@ -263,6 +263,12 @@ static const struct vm_operations_struct shmem_vm_ops;
 static const struct vm_operations_struct shmem_anon_vm_ops;
 static struct file_system_type shmem_fs_type;
 
+bool shmem_mapping(struct address_space *mapping)
+{
+       return mapping->a_ops == &shmem_aops;
+}
+EXPORT_SYMBOL_GPL(shmem_mapping);
+
 bool vma_is_anon_shmem(struct vm_area_struct *vma)
 {
        return vma->vm_ops == &shmem_anon_vm_ops;
@@ -4466,7 +4472,7 @@ static int shmem_error_remove_folio(struct address_space *mapping,
        return 0;
 }
 
-const struct address_space_operations shmem_aops = {
+static const struct address_space_operations shmem_aops = {
        .writepage      = shmem_writepage,
        .dirty_folio    = noop_dirty_folio,
 #ifdef CONFIG_TMPFS
@@ -4478,7 +4484,6 @@ const struct address_space_operations shmem_aops = {
 #endif
        .error_remove_folio = shmem_error_remove_folio,
 };
-EXPORT_SYMBOL(shmem_aops);
 
 static const struct file_operations shmem_file_operations = {
        .mmap           = shmem_mmap,