From owner-svn-src-head@freebsd.org Thu Nov 5 11:24:46 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 56910464CD4; Thu, 5 Nov 2020 11:24:46 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CRh4t224Wz4WlC; Thu, 5 Nov 2020 11:24:46 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3406F132F2; Thu, 5 Nov 2020 11:24:46 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0A5BOkRG099024; Thu, 5 Nov 2020 11:24:46 GMT (envelope-from mjg@FreeBSD.org) Received: (from mjg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0A5BOkL3099023; Thu, 5 Nov 2020 11:24:46 GMT (envelope-from mjg@FreeBSD.org) Message-Id: <202011051124.0A5BOkL3099023@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mjg set sender to mjg@FreeBSD.org using -f From: Mateusz Guzik Date: Thu, 5 Nov 2020 11:24:46 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r367368 - head/sys/fs/tmpfs X-SVN-Group: head X-SVN-Commit-Author: mjg X-SVN-Commit-Paths: head/sys/fs/tmpfs X-SVN-Commit-Revision: 367368 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Nov 2020 11:24:46 -0000 Author: mjg Date: Thu Nov 5 11:24:45 2020 New Revision: 367368 URL: https://svnweb.freebsd.org/changeset/base/367368 Log: tmpfs: reorder struct tmpfs_node to shrink it by 8 bytes The reduction (232 -> 224 bytes) allows UMA to fit one more item (17 -> 18) per slab as reported in vm.uma.TMPFS_node.keg.ipers. Modified: head/sys/fs/tmpfs/tmpfs.h Modified: head/sys/fs/tmpfs/tmpfs.h ============================================================================== --- head/sys/fs/tmpfs/tmpfs.h Thu Nov 5 11:19:31 2020 (r367367) +++ head/sys/fs/tmpfs/tmpfs.h Thu Nov 5 11:24:45 2020 (r367368) @@ -156,8 +156,10 @@ struct tmpfs_node { * when the node is removed from list and unlocked. */ LIST_ENTRY(tmpfs_node) tn_entries; /* (m) */ - bool tn_attached; /* (m) */ + /* Node identifier. */ + ino_t tn_id; /* (c) */ + /* * The node's type. Any of 'VBLK', 'VCHR', 'VDIR', 'VFIFO', * 'VLNK', 'VREG' and 'VSOCK' is allowed. The usage of vnode @@ -166,8 +168,10 @@ struct tmpfs_node { */ enum vtype tn_type; /* (c) */ - /* Node identifier. */ - ino_t tn_id; /* (c) */ + /* + * See the top comment. Reordered here to fill LP64 hole. + */ + bool tn_attached; /* (m) */ /* * Node's internal status. This is used by several file system