Date: Sat, 4 Feb 2012 17:43:16 +0000 (UTC) From: Attilio Rao <attilio@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r230988 - user/attilio/vmcontention/sys/fs/tmpfs Message-ID: <201202041743.q14HhGkB045324@svn.freebsd.org>
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Author: attilio Date: Sat Feb 4 17:43:15 2012 New Revision: 230988 URL: http://svn.freebsd.org/changeset/base/230988 Log: Fix tmpfs in order to take into account also cached pages. Modified: user/attilio/vmcontention/sys/fs/tmpfs/tmpfs_vnops.c Modified: user/attilio/vmcontention/sys/fs/tmpfs/tmpfs_vnops.c ============================================================================== --- user/attilio/vmcontention/sys/fs/tmpfs/tmpfs_vnops.c Sat Feb 4 17:34:09 2012 (r230987) +++ user/attilio/vmcontention/sys/fs/tmpfs/tmpfs_vnops.c Sat Feb 4 17:43:15 2012 (r230988) @@ -648,21 +648,30 @@ tmpfs_mappedwrite(vm_object_t vobj, vm_o goto nocache; } lookupvpg: - if (((vpg = vm_page_lookup(vobj, idx)) != NULL) && - vm_page_is_valid(vpg, offset, tlen)) { - if ((vpg->oflags & VPO_BUSY) != 0) { - /* - * Reference the page before unlocking and sleeping so - * that the page daemon is less likely to reclaim it. - */ - vm_page_reference(vpg); - vm_page_sleep(vpg, "tmfsmw"); - goto lookupvpg; + if ((vpg = vm_radix_lookup(&vobj->rtree, idx, VM_RADIX_ANY)) != NULL) { + if (vpg->flags & PG_CACHED) { + mtx_lock(&vm_page_queue_free_mtx); + if (vpg->object == vobj) + vm_page_cache_remove(vpg); + mtx_unlock(&vm_page_queue_free_mtx); + VM_OBJECT_UNLOCK(vobj); + vpg = NULL; + } else if (vm_page_is_valid(vpg, offset, tlen)) { + if ((vpg->oflags & VPO_BUSY) != 0) { + /* + * Reference the page before unlocking and + * sleeping so that the page daemon is less + * likely to reclaim it. + */ + vm_page_reference(vpg); + vm_page_sleep(vpg, "tmfsmw"); + goto lookupvpg; + } + vm_page_busy(vpg); + vm_page_undirty(vpg); + VM_OBJECT_UNLOCK(vobj); + error = uiomove_fromphys(&vpg, offset, tlen, uio); } - vm_page_busy(vpg); - vm_page_undirty(vpg); - VM_OBJECT_UNLOCK(vobj); - error = uiomove_fromphys(&vpg, offset, tlen, uio); } else { VM_OBJECT_UNLOCK(vobj); vpg = NULL;
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