4.4-stable patches

added patches:
	md-fix-invalid-stored-role-for-a-disk-try2.patch

diff --git a/queue-4.4/md-fix-invalid-stored-role-for-a-disk-try2.patch b/queue-4.4/md-fix-invalid-stored-role-for-a-disk-try2.patch
new file mode 100644 (file)
index 0000000..53e5015
--- /dev/null
+++ b/queue-4.4/md-fix-invalid-stored-role-for-a-disk-try2.patch
@@ -0,0 +1,58 @@
+From 9e753ba9b9b405e3902d9f08aec5f2ea58a0c317 Mon Sep 17 00:00:00 2001
+From: Shaohua Li <shli@fb.com>
+Date: Sun, 14 Oct 2018 17:05:07 -0700
+Subject: MD: fix invalid stored role for a disk - try2
+
+From: Shaohua Li <shli@fb.com>
+
+commit 9e753ba9b9b405e3902d9f08aec5f2ea58a0c317 upstream.
+
+Commit d595567dc4f0 (MD: fix invalid stored role for a disk) broke linear
+hotadd. Let's only fix the role for disks in raid1/10.
+Based on Guoqing's original patch.
+
+Reported-by: kernel test robot <rong.a.chen@intel.com>
+Cc: Gioh Kim <gi-oh.kim@profitbricks.com>
+Cc: Guoqing Jiang <gqjiang@suse.com>
+Signed-off-by: Shaohua Li <shli@fb.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/md/md.c     |    4 ----
+ drivers/md/raid1.c  |    1 +
+ drivers/md/raid10.c |    1 +
+ 3 files changed, 2 insertions(+), 4 deletions(-)
+
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -1670,10 +1670,6 @@ static int super_1_validate(struct mddev
+                       } else
+                               set_bit(In_sync, &rdev->flags);
+                       rdev->raid_disk = role;
+-                      if (role >= mddev->raid_disks) {
+-                              rdev->saved_raid_disk = -1;
+-                              rdev->raid_disk = -1;
+-                      }
+                       break;
+               }
+               if (sb->devflags & WriteMostly1)
+--- a/drivers/md/raid1.c
++++ b/drivers/md/raid1.c
+@@ -1605,6 +1605,7 @@ static int raid1_add_disk(struct mddev *
+        */
+       if (rdev->saved_raid_disk >= 0 &&
+           rdev->saved_raid_disk >= first &&
++          rdev->saved_raid_disk < conf->raid_disks &&
+           conf->mirrors[rdev->saved_raid_disk].rdev == NULL)
+               first = last = rdev->saved_raid_disk;
+ 
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -1737,6 +1737,7 @@ static int raid10_add_disk(struct mddev
+               first = last = rdev->raid_disk;
+ 
+       if (rdev->saved_raid_disk >= first &&
++          rdev->saved_raid_disk < conf->geo.raid_disks &&
+           conf->mirrors[rdev->saved_raid_disk].rdev == NULL)
+               mirror = rdev->saved_raid_disk;
+       else

diff --git a/queue-4.4/series b/queue-4.4/series
index 514d9d2cb24851ae3315786e0537e80617e108c7..c66942023550b8bf866c6eff032c7d2991dc1dd9 100644 (file)
--- a/queue-4.4/series
+++ b/queue-4.4/series
@@ -96,3 +96,4 @@ btrfs-fix-wrong-dentries-after-fsync-of-file-that-got-its-parent-replaced.patch
 btrfs-qgroup-dirty-all-qgroups-before-rescan.patch
 btrfs-fix-null-pointer-dereference-on-compressed-write-path-error.patch
 btrfs-set-max_extent_size-properly.patch
+md-fix-invalid-stored-role-for-a-disk-try2.patch