Date: Wed, 29 Jun 2011 16:40:41 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/amd64/amd64 pmap.c src/sys/arm/arm pmap.c src/sys/fs/tmpfs tmpfs_subr.c src/sys/i386/i386 pmap.c src/sys/i386/xen pmap.c src/sys/ia64/ia64 pmap.c src/sys/kern uipc_shm.c vfs_subr.c src/sys/mips/mips pmap.c src/sys/ufs/ffs ... Message-ID: <201106291641.p5TGfGij071240@repoman.freebsd.org>
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alc 2011-06-29 16:40:41 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 pmap.c
sys/arm/arm pmap.c
sys/fs/tmpfs tmpfs_subr.c
sys/i386/i386 pmap.c
sys/i386/xen pmap.c
sys/ia64/ia64 pmap.c
sys/kern uipc_shm.c vfs_subr.c
sys/mips/mips pmap.c
sys/ufs/ffs ffs_inode.c
sys/vm vm_map.c vm_object.c vm_object.h
vnode_pager.c
Log:
SVN rev 223677 on 2011-06-29 16:40:41Z by alc
Add a new option, OBJPR_NOTMAPPED, to vm_object_page_remove(). Passing this
option to vm_object_page_remove() asserts that the specified range of pages
is not mapped, or more precisely that none of these pages have any managed
mappings. Thus, vm_object_page_remove() need not call pmap_remove_all() on
the pages.
This change not only saves time by eliminating pointless calls to
pmap_remove_all(), but it also eliminates an inconsistency in the use of
pmap_remove_all() versus related functions, like pmap_remove_write(). It
eliminates harmless but pointless calls to pmap_remove_all() that were being
performed on PG_UNMANAGED pages.
Update all of the existing assertions on pmap_remove_all() to reflect this
change.
Reviewed by: kib
Revision Changes Path
1.722 +2 -2 src/sys/amd64/amd64/pmap.c
1.134 +2 -2 src/sys/arm/arm/pmap.c
1.31 +1 -1 src/sys/fs/tmpfs/tmpfs_subr.c
1.701 +2 -2 src/sys/i386/i386/pmap.c
1.61 +2 -2 src/sys/i386/xen/pmap.c
1.232 +2 -2 src/sys/ia64/ia64/pmap.c
1.15 +1 -1 src/sys/kern/uipc_shm.c
1.812 +2 -2 src/sys/kern/vfs_subr.c
1.94 +2 -2 src/sys/mips/mips/pmap.c
1.123 +1 -1 src/sys/ufs/ffs/ffs_inode.c
1.444 +9 -1 src/sys/vm/vm_map.c
1.444 +66 -59 src/sys/vm/vm_object.c
1.127 +8 -1 src/sys/vm/vm_object.h
1.267 +1 -1 src/sys/vm/vnode_pager.c
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