Module Name: src Committed By: enami Date: Thu Jun 30 00:37:08 UTC 2011
Modified Files: src/sys/fs/tmpfs: tmpfs_subr.c Log Message: Backout previous. May be I need more coffee. To generate a diff of this commit: cvs rdiff -u -r1.75 -r1.76 src/sys/fs/tmpfs/tmpfs_subr.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/fs/tmpfs/tmpfs_subr.c diff -u src/sys/fs/tmpfs/tmpfs_subr.c:1.75 src/sys/fs/tmpfs/tmpfs_subr.c:1.76 --- src/sys/fs/tmpfs/tmpfs_subr.c:1.75 Thu Jun 30 00:09:26 2011 +++ src/sys/fs/tmpfs/tmpfs_subr.c Thu Jun 30 00:37:07 2011 @@ -1,4 +1,4 @@ -/* $NetBSD: tmpfs_subr.c,v 1.75 2011/06/30 00:09:26 enami Exp $ */ +/* $NetBSD: tmpfs_subr.c,v 1.76 2011/06/30 00:37:07 enami Exp $ */ /* * Copyright (c) 2005-2011 The NetBSD Foundation, Inc. @@ -74,7 +74,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: tmpfs_subr.c,v 1.75 2011/06/30 00:09:26 enami Exp $"); +__KERNEL_RCSID(0, "$NetBSD: tmpfs_subr.c,v 1.76 2011/06/30 00:37:07 enami Exp $"); #include <sys/param.h> #include <sys/dirent.h> @@ -821,8 +821,7 @@ return ENOSPC; } } else if (newsize < oldsize) { - int zerolen = MIN(newpages << PAGE_SHIFT, node->tn_size) - - newsize; + int zerolen = MIN(round_page(newsize), node->tn_size) - newsize; ubc_zerorange(uobj, newsize, zerolen, UBC_UNMAP_FLAG(vp)); } @@ -831,7 +830,16 @@ node->tn_size = newsize; uvm_vnp_setsize(vp, newsize); + /* + * Free "backing store". + */ if (newpages < oldpages) { + KASSERT(uobj->vmobjlock == vp->v_interlock); + + mutex_enter(uobj->vmobjlock); + uao_dropswap_range(uobj, newpages, oldpages); + mutex_exit(uobj->vmobjlock); + /* Decrease the used-memory counter. */ tmpfs_mem_decr(tmp, (oldpages - newpages) << PAGE_SHIFT); }