Author: kib
Date: Tue Jan 17 06:57:55 2012
New Revision: 230258
URL: http://svn.freebsd.org/changeset/base/230258
Log:
MFC r229934:
Change the type of the paging_in_progress refcounter from u_short to
u_int. With the auto-sized buffer cache on the modern machines, UFS
metadata can generate more the 65535 pages belonging to the buffers
undergoing i/o, overflowing the counter.
To keep the layout of other fields of the struct vm_object intact
on stable/9, put enlarged paging_in_progress at the end of the structure,
and put a placeholder in the place of old pip counter.
Modified:
stable/9/sys/vm/vm_object.h
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/vm/vm_object.h
==============================================================================
--- stable/9/sys/vm/vm_object.h Tue Jan 17 06:40:41 2012 (r230257)
+++ stable/9/sys/vm/vm_object.h Tue Jan 17 06:57:55 2012 (r230258)
@@ -96,7 +96,7 @@ struct vm_object {
objtype_t type; /* type of pager */
u_short flags; /* see below */
u_short pg_color; /* (c) color of first page in obj */
- u_short paging_in_progress; /* Paging (in or out) so don't collapse
or destroy */
+ u_short pad1; /* Old pip counter */
int resident_page_count; /* number of resident pages */
struct vm_object *backing_object; /* object that I'm a shadow of */
vm_ooffset_t backing_object_offset;/* Offset in backing object */
@@ -146,6 +146,7 @@ struct vm_object {
} un_pager;
struct ucred *cred;
vm_ooffset_t charge;
+ u_int paging_in_progress; /* Paging (in or out) so don't collapse
or destroy */
};
/*
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
