taglinefilesource code
volume_bit1693drivers/block/sbpcd.cD_S[d].diskstate_flags &= ~volume_bit;
volume_bit1848drivers/block/sbpcd.cD_S[d].diskstate_flags |= volume_bit;
volume_bit2348drivers/block/sbpcd.cD_S[d].diskstate_flags &= ~volume_bit;
volume_bit2469drivers/block/sbpcd.cD_S[d].diskstate_flags |= volume_bit;
volume_bit217include/linux/sbpcd.h#define volume_valid    (D_S[d].diskstate_flags&volume_bit)