1#
2# Block layer core configuration
3#
4config BLOCK
5       bool "Enable the block layer" if EMBEDDED
6       default y
7       help
8	 This permits the block layer to be removed from the kernel if it's not
9	 needed (on some embedded devices for example).  If this option is
10	 disabled, then blockdev files will become unusable and some
11	 filesystems (such as ext3) will become unavailable.
12
13	 This option will also disable SCSI character devices and USB storage
14	 since they make use of various block layer definitions and
15	 facilities.
16
17	 Say Y here unless you know you really don't want to mount disks and
18	 suchlike.
19
20if BLOCK
21
22config LBD
23	bool "Support for Large Block Devices"
24	depends on !64BIT
25	help
26	  Say Y here if you want to attach large (bigger than 2TB) discs to
27	  your machine, or if you want to have a raid or loopback device
28	  bigger than 2TB.  Otherwise say N.
29
30config BLK_DEV_IO_TRACE
31	bool "Support for tracing block io actions"
32	depends on SYSFS
33	select RELAY
34	select DEBUG_FS
35	help
36	  Say Y here, if you want to be able to trace the block layer actions
37	  on a given queue. Tracing allows you to see any traffic happening
38	  on a block device queue. For more information (and the user space
39	  support tools needed), fetch the blktrace app from:
40
41	  git://brick.kernel.dk/data/git/blktrace.git
42
43config LSF
44	bool "Support for Large Single Files"
45	depends on !64BIT
46	help
47	  Say Y here if you want to be able to handle very large files (bigger
48	  than 2TB), otherwise say N.
49
50	  If unsure, say Y.
51
52endif
53
54source block/Kconfig.iosched
55