Date: Wed, 16 Mar 2011 08:58:09 +0000 (UTC) From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r219696 - head/lib/libc/gen Message-ID: <201103160858.p2G8w9nR075276@svn.freebsd.org>
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Author: pjd Date: Wed Mar 16 08:58:09 2011 New Revision: 219696 URL: http://svn.freebsd.org/changeset/base/219696 Log: From fts.c comment: The "FTS_NOSTAT" option can avoid a lot of calls to stat(2) if it knows that a directory could not possibly have subdirectories. This is decided by looking at the link count: a subdirectory would increment its parent's link count by virtue of its own ".." entry. This assumption only holds for UFS-like filesystems that implement links and directories this way, so we must punt for others. It looks like ZFS is a UFS-like file system, as the above also holds for ZFS. Add ZFS to the list of file systems that allow for such optimization. MFC after: 1 month Modified: head/lib/libc/gen/fts-compat.c head/lib/libc/gen/fts.c Modified: head/lib/libc/gen/fts-compat.c ============================================================================== --- head/lib/libc/gen/fts-compat.c Wed Mar 16 08:56:22 2011 (r219695) +++ head/lib/libc/gen/fts-compat.c Wed Mar 16 08:58:09 2011 (r219696) @@ -110,6 +110,7 @@ struct _fts_private { static const char *ufslike_filesystems[] = { "ufs", + "zfs", "nfs", "nfs4", "ext2fs", Modified: head/lib/libc/gen/fts.c ============================================================================== --- head/lib/libc/gen/fts.c Wed Mar 16 08:56:22 2011 (r219695) +++ head/lib/libc/gen/fts.c Wed Mar 16 08:58:09 2011 (r219696) @@ -100,6 +100,7 @@ struct _fts_private { static const char *ufslike_filesystems[] = { "ufs", + "zfs", "nfs", "nfs4", "ext2fs",
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