xfs: restore bi_bdev in xfs_zone_gc_write_chunk

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xfs_zone_gc_write_chunk relies on bi_bdev to still be valid, which is not
true when XFS is used on top of a stacked block device.  This can lead to
misdirected GC writes, writing of plain text when using dm-crypt, or
miscalculated I/O limits in xfs_zone_gc_split_write.

Fix this by reassigning bi_bdev.

Fixes: 080d01c41d ("xfs: implement zoned garbage collection")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

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Christoph Hellwig 2026-08-13 16:56:12 +02:00 • committed by Carlos Maiolino

parent 6b855256eb

commit 885435535b

1 changed files with 5 additions and 0 deletions

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fs/xfs/xfs_zone_gc.c

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