+ x(nocow, u8, \
+ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME|OPT_INODE, \
+ OPT_BOOL(), \
+ BCH_SB_NOCOW, false, \
+ NULL, "Nocow mode: Writes will be done in place when possible.\n"\
+ "Snapshots and reflink will still caused writes to be COW\n"\
+ "Implicitly disables data checksumming, compression and encryption")\
+ x(nocow_enabled, u8, \
+ OPT_FS|OPT_MOUNT, \
+ OPT_BOOL(), \
+ BCH2_NO_SB_OPT, true, \
+ NULL, "Enable nocow mode: enables runtime locking in\n"\
+ "data move path needed if nocow will ever be in use\n")\
+ x(no_data_io, u8, \
+ OPT_MOUNT, \
+ OPT_BOOL(), \
+ BCH2_NO_SB_OPT, false, \
+ NULL, "Skip submit_bio() for data reads and writes, " \
+ "for performance testing purposes") \