btrfs: zoned: fixup last alloc pointer after extent removal for DUP

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[ Upstream commit e2d848649e ]

When a block group is composed of a sequential write zone and a
conventional zone, we recover the (pseudo) write pointer of the
conventional zone using the end of the last allocated position.

However, if the last extent in a block group is removed, the last extent
position will be smaller than the other real write pointer position.
Then, that will cause an error due to mismatch of the write pointers.

We can fixup this case by moving the alloc_offset to the corresponding
write pointer position.

Fixes: c0d90a79e8 ("btrfs: zoned: fix alloc_offset calculation for partly conventional block groups")
CC: stable@vger.kernel.org # 6.16+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Naohiro Aota 2026-01-23 21:41:35 +09:00 • committed by Sasha Levin

parent 72f6529487

commit f4951c56d5

1 changed files with 14 additions and 0 deletions

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fs/btrfs/zoned.c

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