This is a note to let you know that I've just added the patch titled
btrfs: zoned: fix btrfs_can_activate_zone() to support DUP profile
to the 6.2-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-fix-btrfs_can_activate_zone-to-support-dup-profile.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9e1cdf0c354e46e428c0e0cab008abbe81b6013d Mon Sep 17 00:00:00 2001
From: Naohiro Aota <naohiro.aota@xxxxxxx>
Date: Mon, 13 Mar 2023 16:29:49 +0900
Subject: btrfs: zoned: fix btrfs_can_activate_zone() to support DUP profile
From: Naohiro Aota <naohiro.aota@xxxxxxx>
commit 9e1cdf0c354e46e428c0e0cab008abbe81b6013d upstream.
btrfs_can_activate_zone() returns true if at least one device has one zone
available for activation. This is OK for the single profile, but not OK for
DUP profile. We need two zones to create a DUP block group. Fix it by
properly handling the case with the profile flags.
Fixes: 265f7237dd25 ("btrfs: zoned: allow DUP on meta-data block groups")
CC: stable@xxxxxxxxxxxxxxx # 6.1+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Signed-off-by: Naohiro Aota <naohiro.aota@xxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/zoned.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -2100,11 +2100,21 @@ bool btrfs_can_activate_zone(struct btrf
if (!device->bdev)
continue;
- if (!zinfo->max_active_zones ||
- atomic_read(&zinfo->active_zones_left)) {
+ if (!zinfo->max_active_zones) {
ret = true;
break;
}
+
+ switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
+ case 0: /* single */
+ ret = (atomic_read(&zinfo->active_zones_left) >= 1);
+ break;
+ case BTRFS_BLOCK_GROUP_DUP:
+ ret = (atomic_read(&zinfo->active_zones_left) >= 2);
+ break;
+ }
+ if (ret)
+ break;
}
mutex_unlock(&fs_info->chunk_mutex);
Patches currently in stable-queue which might be from naohiro.aota@xxxxxxx are
queue-6.2/btrfs-zoned-fix-btrfs_can_activate_zone-to-support-dup-profile.patch
