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由 Jayamohan Kallickal 提交于
Ring mode is not used. This patch removes the code. Signed-off-by: NMike Christie <michaelc@cs.wisc.edu> Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com> Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>
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