Date: Sun, 17 Mar 2013 20:40:31 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r248443 - user/attilio/vmcontention/sys/vm Message-ID: <201303172040.r2HKeV73043530@svn.freebsd.org>
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Author: alc Date: Sun Mar 17 20:40:31 2013 New Revision: 248443 URL: http://svnweb.freebsd.org/changeset/base/248443 Log: The calls to vm_radix_lookup_ge() by vm_reserv_alloc_{contig,page}() can be eliminated. If the calls to vm_radix_lookup_le() return NULL, then the page at the head of the object's memq must be the page with the least pindex greater than the specified pindex. Reviewed by: attilio Sponsored by: EMC / Isilon Storage Division Modified: user/attilio/vmcontention/sys/vm/vm_reserv.c Modified: user/attilio/vmcontention/sys/vm/vm_reserv.c ============================================================================== --- user/attilio/vmcontention/sys/vm/vm_reserv.c Sun Mar 17 20:11:08 2013 (r248442) +++ user/attilio/vmcontention/sys/vm/vm_reserv.c Sun Mar 17 20:40:31 2013 (r248443) @@ -352,7 +352,7 @@ vm_reserv_alloc_contig(vm_object_t objec goto found; msucc = TAILQ_NEXT(mpred, listq); } else - msucc = vm_radix_lookup_ge(&object->rtree, pindex); + msucc = TAILQ_FIRST(&object->memq); if (msucc != NULL) { KASSERT(msucc->pindex > pindex, ("vm_reserv_alloc_page: pindex already allocated")); @@ -507,7 +507,7 @@ vm_reserv_alloc_page(vm_object_t object, goto found; msucc = TAILQ_NEXT(mpred, listq); } else - msucc = vm_radix_lookup_ge(&object->rtree, pindex); + msucc = TAILQ_FIRST(&object->memq); if (msucc != NULL) { KASSERT(msucc->pindex > pindex, ("vm_reserv_alloc_page: pindex already allocated"));
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