13a65dfe8SJens Axboe# 23a65dfe8SJens Axboe# Block layer core configuration 33a65dfe8SJens Axboe# 43a65dfe8SJens Axboe#XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64 53a65dfe8SJens Axboe#for instance. 63a65dfe8SJens Axboeconfig LBD 73a65dfe8SJens Axboe bool "Support for Large Block Devices" 8347a8dc3SMartin Schwidefsky depends on X86 || (MIPS && 32BIT) || PPC32 || (S390 && !64BIT) || SUPERH || UML 93a65dfe8SJens Axboe help 103a65dfe8SJens Axboe Say Y here if you want to attach large (bigger than 2TB) discs to 113a65dfe8SJens Axboe your machine, or if you want to have a raid or loopback device 123a65dfe8SJens Axboe bigger than 2TB. Otherwise say N. 133a65dfe8SJens Axboe 142056a782SJens Axboeconfig BLK_DEV_IO_TRACE 152056a782SJens Axboe bool "Support for tracing block io actions" 1609540e69SJens Axboe depends on SYSFS 172056a782SJens Axboe select RELAY 182056a782SJens Axboe select DEBUG_FS 192056a782SJens Axboe help 202056a782SJens Axboe Say Y here, if you want to be able to trace the block layer actions 212056a782SJens Axboe on a given queue. Tracing allows you to see any traffic happening 222056a782SJens Axboe on a block device queue. For more information (and the user space 232056a782SJens Axboe support tools needed), fetch the blktrace app from: 242056a782SJens Axboe 252056a782SJens Axboe git://brick.kernel.dk/data/git/blktrace.git 262056a782SJens Axboe 27a0f62ac6STakashi Satoconfig LSF 28a0f62ac6STakashi Sato bool "Support for Large Single Files" 29a0f62ac6STakashi Sato depends on X86 || (MIPS && 32BIT) || PPC32 || ARCH_S390_31 || SUPERH || UML 30a0f62ac6STakashi Sato help 31*88b9adb0STrond Myklebust Say Y here if you want to be able to handle very large files (bigger 32*88b9adb0STrond Myklebust than 2TB), otherwise say N. 33*88b9adb0STrond Myklebust 34*88b9adb0STrond Myklebust If unsure, say Y. 35a0f62ac6STakashi Sato 363a65dfe8SJens Axboesource block/Kconfig.iosched 37