This is a note to let you know that I've just added the patch titled
btrfs: zoned: use zone aware sb location for scrub
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
btrfs-zoned-use-zone-aware-sb-location-for-scrub.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 74098a989b9c3370f768140b7783a7aaec2759b3 Mon Sep 17 00:00:00 2001
From: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Date: Mon, 26 Feb 2024 16:39:13 +0100
Subject: btrfs: zoned: use zone aware sb location for scrub
From: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
commit 74098a989b9c3370f768140b7783a7aaec2759b3 upstream.
At the moment scrub_supers() doesn't grab the super block's location via
the zoned device aware btrfs_sb_log_location() but via btrfs_sb_offset().
This leads to checksum errors on 'scrub' as we're not accessing the
correct location of the super block.
So use btrfs_sb_log_location() for getting the super blocks location on
scrub.
Reported-by: WA AM <waautomata@xxxxxxxxx>
Link: http://lore.kernel.org/linux-btrfs/CANU2Z0EvUzfYxczLgGUiREoMndE9WdQnbaawV5Fv5gNXptPUKw@xxxxxxxxxxxxxx
CC: stable@xxxxxxxxxxxxxxx # 5.15+
Reviewed-by: Qu Wenruo <wqu@xxxxxxxx>
Reviewed-by: Naohiro Aota <naohiro.aota@xxxxxxx>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/scrub.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2805,7 +2805,17 @@ static noinline_for_stack int scrub_supe
gen = btrfs_get_last_trans_committed(fs_info);
for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
- bytenr = btrfs_sb_offset(i);
+ ret = btrfs_sb_log_location(scrub_dev, i, 0, &bytenr);
+ if (ret == -ENOENT)
+ break;
+
+ if (ret) {
+ spin_lock(&sctx->stat_lock);
+ sctx->stat.super_errors++;
+ spin_unlock(&sctx->stat_lock);
+ continue;
+ }
+
if (bytenr + BTRFS_SUPER_INFO_SIZE >
scrub_dev->commit_total_bytes)
break;
Patches currently in stable-queue which might be from johannes.thumshirn@xxxxxxx are
queue-6.8/btrfs-add-helpers-to-get-fs_info-from-page-folio-poi.patch
queue-6.8/btrfs-add-helper-to-get-fs_info-from-struct-inode-po.patch
queue-6.8/btrfs-zoned-fix-use-after-free-in-do_zone_finish.patch
queue-6.8/btrfs-add-helpers-to-get-inode-from-page-folio-point.patch
queue-6.8/btrfs-zoned-don-t-skip-block-groups-with-100-zone-unusable.patch
queue-6.8/btrfs-zoned-use-zone-aware-sb-location-for-scrub.patch
queue-6.8/btrfs-add-set_folio_extent_mapped-helper.patch
