6.1-stable review patch. If anyone has any objections, please let me know.
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From: Christoph Hellwig hch@lst.de
[ Upstream commit 31ade7d4fdcf382beb8cb229a1f5d77e0f239672 ]
Discard and Write Zeroes are different operation and implemented by different fallocate opcodes for ubd. If one fails the other one can work and vice versa.
Split the code to disable the operations in ubd_handler to only disable the operation that actually failed.
Fixes: 50109b5a03b4 ("um: Add support for DISCARD in the UBD Driver") Signed-off-by: Christoph Hellwig hch@lst.de Reviewed-by: Bart Van Assche bvanassche@acm.org Reviewed-by: Damien Le Moal dlemoal@kernel.org Reviewed-by: Martin K. Petersen martin.petersen@oracle.com Acked-By: Anton Ivanov anton.ivanov@cambridgegreys.com Link: https://lore.kernel.org/r/20240531074837.1648501-3-hch@lst.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- arch/um/drivers/ubd_kern.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 2670f951732c1..1203f5078cb57 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -458,10 +458,11 @@ static int bulk_req_safe_read(
static void ubd_end_request(struct io_thread_req *io_req) { - if (io_req->error == BLK_STS_NOTSUPP && - req_op(io_req->req) == REQ_OP_DISCARD) { - blk_queue_max_discard_sectors(io_req->req->q, 0); - blk_queue_max_write_zeroes_sectors(io_req->req->q, 0); + if (io_req->error == BLK_STS_NOTSUPP) { + if (req_op(io_req->req) == REQ_OP_DISCARD) + blk_queue_max_discard_sectors(io_req->req->q, 0); + else if (req_op(io_req->req) == REQ_OP_WRITE_ZEROES) + blk_queue_max_write_zeroes_sectors(io_req->req->q, 0); } blk_mq_end_request(io_req->req, io_req->error); kfree(io_req);