Date: Tue, 17 Jan 2012 06:57:55 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r230258 - stable/9/sys/vm Message-ID: <201201170657.q0H6vtwX072041@svn.freebsd.org>
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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 */ }; /*
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