Resolves: #1299169 - disable leaf optimization for NFS
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@ -1,7 +1,7 @@
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From 1fc080b7c1eac7fa8063273aaae6b80165c17fe0 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?P=C3=A1draig=20Brady?= <P@draigBrady.com>
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Date: Sun, 20 Dec 2015 23:46:05 +0000
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Subject: [PATCH 1/4] fts: enable leaf optimization for XFS
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Subject: [PATCH 1/5] fts: enable leaf optimization for XFS
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XFS provides usable dirent.d_type only for DT_DIR,
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but the noleaf optimization still applies, as confirmed with:
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@ -56,7 +56,7 @@ index f76c015..fb720c0 100644
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From 2f0dddbb01a70b2ae02797b315924de7e06c3d83 Mon Sep 17 00:00:00 2001
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From: Kamil Dudka <kdudka@redhat.com>
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Date: Wed, 9 Dec 2015 07:34:56 +0100
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Subject: [PATCH 2/4] fts: ensure leaf optimization is used for NFS
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Subject: [PATCH 2/5] fts: ensure leaf optimization is used for NFS
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NFS provides usable dirent.d_type but not necessarily for all entries
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of large directories. See <https://bugzilla.redhat.com/1252549>
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@ -91,7 +91,7 @@ index fb720c0..d2d404f 100644
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From 1328926a705fdb4728c1f255dd368de928736d39 Mon Sep 17 00:00:00 2001
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From: Kamil Dudka <kdudka@redhat.com>
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Date: Fri, 25 Sep 2015 16:09:39 +0200
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Subject: [PATCH 3/4] fts: introduce the FTS_NOLEAF flag
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Subject: [PATCH 3/5] fts: introduce the FTS_NOLEAF flag
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The flag is needed to implement the -noleaf option of find.
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* lib/fts.c (link_count_optimize_ok): Implement the FTS_NOLEAF flag.
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@ -147,7 +147,7 @@ index 63d4b74..f1d519b 100644
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From c186934e6e37ddadf7511abb9b1045192757618e Mon Sep 17 00:00:00 2001
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From: Kamil Dudka <kdudka@redhat.com>
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Date: Fri, 25 Sep 2015 19:13:15 +0200
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Subject: [PATCH 4/4] ftsfind: propagate the -noleaf option to FTS
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Subject: [PATCH 4/5] ftsfind: propagate the -noleaf option to FTS
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* find/ftsfind.c (find): Propagate the -noleaf option to FTS.
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---
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@ -171,3 +171,61 @@ index 5159470..e34b672 100644
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--
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2.5.0
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From 2edb6204bab0acb0ef8cdde7499396afd9c66131 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?P=C3=A1draig=20Brady?= <P@draigBrady.com>
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Date: Mon, 18 Jan 2016 17:29:28 +0000
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Subject: [PATCH 5/5] fts: don't unconditionally use leaf optimization for NFS
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NFS st_nlink are not accurate on all implementations,
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leading to aborts() if that assumption is made.
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See <https://bugzilla.redhat.com/1299169>
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* lib/fts.c (leaf_optimization_applies): Remove NFS from
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the white list, and document the issue.
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Upstream-commit: 85717b68b03bf85016c5079fbbf0c8aa2b182ba6
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Signed-off-by: Kamil Dudka <kdudka@redhat.com>
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---
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gl/lib/fts.c | 19 ++++++++++---------
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1 file changed, 10 insertions(+), 9 deletions(-)
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diff --git a/gl/lib/fts.c b/gl/lib/fts.c
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index 55cd554..6e1eaf5 100644
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--- a/gl/lib/fts.c
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+++ b/gl/lib/fts.c
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@@ -718,22 +718,23 @@ leaf_optimization_applies (int dir_fd)
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switch (fs_buf.f_type)
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{
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- case S_MAGIC_NFS:
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- /* NFS provides usable dirent.d_type but not necessarily for all entries
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- of large directories. See <https://bugzilla.redhat.com/1252549>. */
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- return true;
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-
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/* List here the file system types that lack usable dirent.d_type
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info, yet for which the optimization does apply. */
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case S_MAGIC_REISERFS:
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case S_MAGIC_XFS:
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return true;
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+ /* Explicitly list here any other file system type for which the
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+ optimization is not applicable, but need documentation. */
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+ case S_MAGIC_NFS:
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+ /* NFS provides usable dirent.d_type but not necessarily for all entries
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+ of large directories, so as per <https://bugzilla.redhat.com/1252549>
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+ NFS should return true. However st_nlink values are not accurate on
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+ all implementations as per <https://bugzilla.redhat.com/1299169>. */
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+ /* fall through */
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case S_MAGIC_PROC:
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- /* Explicitly listing this or any other file system type for which
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- the optimization is not applicable is not necessary, but we leave
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- it here to document the risk. Per http://bugs.debian.org/143111,
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- /proc may have bogus stat.st_nlink values. */
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+ /* Per <http://bugs.debian.org/143111> /proc may have
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+ bogus stat.st_nlink values. */
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/* fall through */
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default:
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return false;
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--
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2.5.5
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@ -1,7 +1,7 @@
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Summary: The GNU versions of find utilities (find and xargs)
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Name: findutils
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Version: 4.5.14
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Release: 6%{?dist}
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Release: 7%{?dist}
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Epoch: 1
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License: GPLv3+
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Group: Applications/File
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@ -111,6 +111,9 @@ fi
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%{_infodir}/find-maint.info.gz
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%changelog
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* Fri Jun 24 2016 Kamil Dudka <kdudka@redhat.com> - 1:4.5.14-7
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- disable leaf optimization for NFS (#1299169)
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* Tue Dec 29 2015 Kamil Dudka <kdudka@redhat.com> - 1:4.5.14-6
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- enable leaf optimization for XFS and NFS (#1252549)
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