UBUNTU: SAUCE: Import aufs driver

[mirror_ubuntu-bionic-kernel.git] / include / linux / mm_types.h

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index cfd0ac4e5e0e6260963d8854c2b085477f8c8a43..135e11c291af1bf565461e937dd6453e0767654e 100644 (file)
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -255,6 +255,7 @@ struct vm_region {
        unsigned long   vm_top;         /* region allocated to here */
        unsigned long   vm_pgoff;       /* the offset in vm_file corresponding to vm_start */
        struct file     *vm_file;       /* the backing file or NULL */
+       struct file     *vm_prfile;     /* the virtual backing file or NULL */
 
        int             vm_usage;       /* region usage count (access under nommu_region_sem) */
        bool            vm_icache_flushed : 1; /* true if the icache has been flushed for
@@ -329,6 +330,7 @@ struct vm_area_struct {
        unsigned long vm_pgoff;         /* Offset (within vm_file) in PAGE_SIZE
                                           units */
        struct file * vm_file;          /* File we map to (can be NULL). */
+       struct file *vm_prfile;         /* shadow of vm_file */
        void * vm_private_data;         /* was vm_pte (shared mem) */
 
        atomic_long_t swap_readahead_info;