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Because WB performs writes in SLC mode, it is not possible to use
WriteBooster indefinitely. Vendors can set a lifetime limit in the device.
If the lifetime exceeds this limit, the device ican disable the WB feature.
The feature is defined in the "bWriteBoosterBufferLifeTimeEst (IDN = 1E)"
attribute.
With lifetime exceeding the limit value, the current driver continuously
performs the following query:
- Write Flag: WB_ENABLE / DISABLE
- Read attr: Available Buffer Size
- Read attr: Current Buffer Size
This patch recognizes that WriteBooster is no longer supported by the
device, and prevents unnecessary queries.
Link: https://lore.kernel.org/r/1891546521.01643252701746.JavaMail.epsvc@epcpadp3
Reviewed-by: Asutosh Das <quic_asutoshd@quicinc.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Jinyoung Choi <j-young.choi@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
f681d1078d