Date: Fri, 15 Apr 2011 20:26:24 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r220671 - stable/8/sys/ufs/ffs Message-ID: <201104152026.p3FKQOtc080971@svn.freebsd.org>
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Author: jhb Date: Fri Apr 15 20:26:24 2011 New Revision: 220671 URL: http://svn.freebsd.org/changeset/base/220671 Log: MFC 219276: Use ffs() to locate free bits in the inode bitmap rather than a loop with bit shifts. Modified: stable/8/sys/ufs/ffs/ffs_alloc.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) Modified: stable/8/sys/ufs/ffs/ffs_alloc.c ============================================================================== --- stable/8/sys/ufs/ffs/ffs_alloc.c Fri Apr 15 20:20:11 2011 (r220670) +++ stable/8/sys/ufs/ffs/ffs_alloc.c Fri Apr 15 20:26:24 2011 (r220671) @@ -1770,17 +1770,13 @@ ffs_nodealloccg(ip, cg, ipref, mode) } } i = start + len - loc; - map = inosused[i]; - ipref = i * NBBY; - for (i = 1; i < (1 << NBBY); i <<= 1, ipref++) { - if ((map & i) == 0) { - cgp->cg_irotor = ipref; - goto gotit; - } + map = inosused[i] ^ 0xff; + if (map == 0) { + printf("fs = %s\n", fs->fs_fsmnt); + panic("ffs_nodealloccg: block not in map"); } - printf("fs = %s\n", fs->fs_fsmnt); - panic("ffs_nodealloccg: block not in map"); - /* NOTREACHED */ + ipref = i * NBBY + ffs(map) - 1; + cgp->cg_irotor = ipref; gotit: /* * Check to see if we need to initialize more inodes.
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