Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index b0aa595..5e73cc6 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1892,6 +1892,14 @@
return rs->md.new_level != rs->md.level;
}
+/* True if layout is set to reshape. */
+static bool rs_is_layout_change(struct raid_set *rs, bool use_mddev)
+{
+ return (use_mddev ? rs->md.delta_disks : rs->delta_disks) ||
+ rs->md.new_layout != rs->md.layout ||
+ rs->md.new_chunk_sectors != rs->md.chunk_sectors;
+}
+
/* True if @rs is requested to reshape by ctr */
static bool rs_reshape_requested(struct raid_set *rs)
{
@@ -1904,9 +1912,7 @@
if (rs_is_raid0(rs))
return false;
- change = mddev->new_layout != mddev->layout ||
- mddev->new_chunk_sectors != mddev->chunk_sectors ||
- rs->delta_disks;
+ change = rs_is_layout_change(rs, false);
/* Historical case to support raid1 reshape without delta disks */
if (rs_is_raid1(rs)) {
@@ -2843,7 +2849,7 @@
}
/*
- *
+ * Reshape:
* - change raid layout
* - change chunk size
* - add disks
@@ -2953,6 +2959,20 @@
}
/*
+ * If the md resync thread has updated superblock with max reshape position
+ * at the end of a reshape but not (yet) reset the layout configuration
+ * changes -> reset the latter.
+ */
+static void rs_reset_inconclusive_reshape(struct raid_set *rs)
+{
+ if (!rs_is_reshaping(rs) && rs_is_layout_change(rs, true)) {
+ rs_set_cur(rs);
+ rs->md.delta_disks = 0;
+ rs->md.reshape_backwards = 0;
+ }
+}
+
+/*
* Enable/disable discard support on RAID set depending on
* RAID level and discard properties of underlying RAID members.
*/
@@ -3216,11 +3236,14 @@
if (r)
goto bad;
+ /* Catch any inconclusive reshape superblock content. */
+ rs_reset_inconclusive_reshape(rs);
+
/* Start raid set read-only and assumed clean to change in raid_resume() */
rs->md.ro = 1;
rs->md.in_sync = 1;
- /* Keep array frozen */
+ /* Keep array frozen until resume. */
set_bit(MD_RECOVERY_FROZEN, &rs->md.recovery);
/* Has to be held on running the array */
@@ -3234,7 +3257,6 @@
}
r = md_start(&rs->md);
-
if (r) {
ti->error = "Failed to start raid array";
mddev_unlock(&rs->md);
@@ -3744,10 +3766,10 @@
blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs));
/*
- * RAID1 and RAID10 personalities require bio splitting,
- * RAID0/4/5/6 don't and process large discard bios properly.
+ * RAID0 and RAID10 personalities require bio splitting,
+ * RAID1/4/5/6 don't and process large discard bios properly.
*/
- if (rs_is_raid1(rs) || rs_is_raid10(rs)) {
+ if (rs_is_raid0(rs) || rs_is_raid10(rs)) {
limits->discard_granularity = chunk_size_bytes;
limits->max_discard_sectors = rs->md.chunk_sectors;
}