[lc-checkins] CVS: linux/include/linux comp_cache.h,1.78,1.79

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

Update of /cvsroot/linuxcompressed/linux/include/linux
In directory usw-pr-cvs1:/tmp/cvs-serv28892/include/linux

Modified Files:
	comp_cache.h 
Log Message:
Bug fixes
o Fixed potential bug in get_comp_cache_page() when adding a fragment
to an empty comp page
o Fixed a bug that wouldn't allocate some vswap entries if they
couldn't be allocated for the first time (in
comp_cache_vswap_alloc()). It means that if we allocated only one
third of vswap entries, it would oom kill some process, but wouldn't
try to allocate the rest of vswap entries later. This bug usually
didn't happen before since vswap data structures were allocated at the
boot time.

Other
o Now we don't try to refill swap buffer with many pages in
get_comp_cache_page(), but only one. That was done to the scenario
where we could refill with few pages, but not the amount we previously
set (SWAP_CLUSTER_MAX >> 2), so we end up writing out fragments.



Index: comp_cache.h
===================================================================
RCS file: /cvsroot/linuxcompressed/linux/include/linux/comp_cache.h,v
retrieving revision 1.78
retrieving revision 1.79
diff -C2 -r1.78 -r1.79
*** comp_cache.h	19 Jun 2002 12:18:43 -0000	1.78
--- comp_cache.h	19 Jun 2002 18:10:20 -0000	1.79
***************
*** 2,6 ****
   * linux/mm/comp_cache.h
   *
!  * Time-stamp: <2002-06-19 08:59:31 rcastro>
   *  
   * Linux Virtual Memory Compressed Cache
--- 2,6 ----
   * linux/mm/comp_cache.h
   *
!  * Time-stamp: <2002-06-19 14:41:32 rcastro>
   *  
   * Linux Virtual Memory Compressed Cache
***************
*** 427,431 ****
  extern int  FASTCALL(free_pte_list(struct pte_list *, unsigned long));
  
! void vswap_alloc_and_init(struct vswap_address **, unsigned long);
  
  #else
--- 427,431 ----
  extern int  FASTCALL(free_pte_list(struct pte_list *, unsigned long));
  
! int vswap_alloc_and_init(struct vswap_address **, unsigned long);
  
  #else