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/* linked list of VM areas per task, sorted by address */

struct vm_area_struct *vm_next;

pgprot_t vm_page_prot;

unsigned short vm_flags;

/* AVL tree of VM areas per task, sorted by address */

short vm_avl_height;

struct vm_area_struct * vm_avl_left;

struct vm_area_struct * vm_avl_right;

/* For areas with inode, the list inode->i_mmap, for shm areas,

* the list of attaches, otherwise unused.

*/

struct vm_area_struct *vm_next_share;

struct vm_area_struct **vm_pprev_share;

struct vm_operations_struct * vm_ops;

unsigned long vm_offset;

struct file * vm_file;

unsigned long vm_pte; /* shared mem */

};

struct vm_operations_struct {

void (*open)(struct vm_area_struct * area);

void (*close)(struct vm_area_struct * area);

void (*unmap)(struct vm_area_struct *area, unsigned long, size_t);

void (*protect)(struct vm_area_struct *area, unsigned long, size_t, unsigned int newprot);

int (*sync)(struct vm_area_struct *area, unsigned long, size_t, unsigned int flags);

void (*advise)(struct vm_area_struct *area, unsigned long, size_t, unsigned int advise);