[lc-checkins] CVS: linux/include/linux comp_cache.h,1.94,1.95

[Rodrigo S. de C. <rc...@us...>]

Update of /cvsroot/linuxcompressed/linux/include/linux
In directory usw-pr-cvs1:/tmp/cvs-serv19795/include/linux

Modified Files:
	comp_cache.h 
Log Message:
Bug fixes
o Fixed race between comp_cache_use_address() and do_swap_page(). A pte
could be unsafely changed during a page fault service.



Index: comp_cache.h
===================================================================
RCS file: /cvsroot/linuxcompressed/linux/include/linux/comp_cache.h,v
retrieving revision 1.94
retrieving revision 1.95
diff -C2 -r1.94 -r1.95
*** comp_cache.h	17 Jul 2002 20:44:36 -0000	1.94
--- comp_cache.h	18 Jul 2002 13:32:50 -0000	1.95
***************
*** 2,6 ****
   * linux/mm/comp_cache.h
   *
!  * Time-stamp: <2002-07-17 16:23:16 rcastro>
   *  
   * Linux Virtual Memory Compressed Cache
--- 2,6 ----
   * linux/mm/comp_cache.h
   *
!  * Time-stamp: <2002-07-18 09:47:44 rcastro>
   *  
   * Linux Virtual Memory Compressed Cache
***************
*** 422,439 ****
  extern void FASTCALL(del_swap_cache_page_vswap(struct page *));
  extern int  FASTCALL(free_pte_list(struct pte_list *, unsigned long));
  
  int vswap_alloc_and_init(struct vswap_address **, unsigned long);
- 
- static inline void get_vswap(swp_entry_t entry) {
- 	if (!vswap_address(entry))
- 		return;
- 	vswap_address[SWP_OFFSET(entry)]->fault_count++;
- }
- 
- static inline void put_vswap(swp_entry_t entry) {
- 	if (!vswap_address(entry))
- 		return;
- 	vswap_address[SWP_OFFSET(entry)]->fault_count--;
- }
  
  extern spinlock_t virtual_swap_list;
--- 422,429 ----
  extern void FASTCALL(del_swap_cache_page_vswap(struct page *));
  extern int  FASTCALL(free_pte_list(struct pte_list *, unsigned long));
+ extern void FASTCALL(get_vswap(swp_entry_t));
+ extern void FASTCALL(put_vswap(swp_entry_t));
  
  int vswap_alloc_and_init(struct vswap_address **, unsigned long);
  
  extern spinlock_t virtual_swap_list;