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author | Timothy Pearson <tpearson@raptorengineering.com> | 2017-08-23 14:45:25 -0500 |
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committer | Timothy Pearson <tpearson@raptorengineering.com> | 2017-08-23 14:45:25 -0500 |
commit | fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204 (patch) | |
tree | 22962a4387943edc841c72a4e636a068c66d58fd /block/Kconfig | |
download | ast2050-linux-kernel-fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204.zip ast2050-linux-kernel-fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204.tar.gz |
Initial import of modified Linux 2.6.28 tree
Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y
Diffstat (limited to 'block/Kconfig')
-rw-r--r-- | block/Kconfig | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/block/Kconfig b/block/Kconfig new file mode 100644 index 0000000..1ab7c15 --- /dev/null +++ b/block/Kconfig @@ -0,0 +1,103 @@ +# +# Block layer core configuration +# +menuconfig BLOCK + bool "Enable the block layer" if EMBEDDED + default y + help + Provide block layer support for the kernel. + + Disable this option to remove the block layer support from the + kernel. This may be useful for embedded devices. + + If this option is disabled: + + - block device files will become unusable + - some filesystems (such as ext3) will become unavailable. + + Also, SCSI character devices and USB storage will be disabled since + they make use of various block layer definitions and facilities. + + Say Y here unless you know you really don't want to mount disks and + suchlike. + +if BLOCK + +config LBD + bool "Support for Large Block Devices" + depends on !64BIT + help + Enable block devices of size 2TB and larger. + + This option is required to support the full capacity of large + (2TB+) block devices, including RAID, disk, Network Block Device, + Logical Volume Manager (LVM) and loopback. + + For example, RAID devices are frequently bigger than the capacity + of the largest individual hard drive. + + This option is not required if you have individual disk drives + which total 2TB+ and you are not aggregating the capacity into + a large block device (e.g. using RAID or LVM). + + If unsure, say N. + +config BLK_DEV_IO_TRACE + bool "Support for tracing block io actions" + depends on SYSFS + select RELAY + select DEBUG_FS + help + Say Y here if you want to be able to trace the block layer actions + on a given queue. Tracing allows you to see any traffic happening + on a block device queue. For more information (and the userspace + support tools needed), fetch the blktrace tools from: + + git://git.kernel.dk/blktrace.git + + If unsure, say N. + +config LSF + bool "Support for Large Single Files" + depends on !64BIT + help + Say Y here if you want to be able to handle very large files (2TB + and larger), otherwise say N. + + If unsure, say Y. + +config BLK_DEV_BSG + bool "Block layer SG support v4 (EXPERIMENTAL)" + depends on EXPERIMENTAL + ---help--- + Saying Y here will enable generic SG (SCSI generic) v4 support + for any block device. + + Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4 + can handle complicated SCSI commands: tagged variable length cdbs + with bidirectional data transfers and generic request/response + protocols (e.g. Task Management Functions and SMP in Serial + Attached SCSI). + + If unsure, say N. + +config BLK_DEV_INTEGRITY + bool "Block layer data integrity support" + ---help--- + Some storage devices allow extra information to be + stored/retrieved to help protect the data. The block layer + data integrity option provides hooks which can be used by + filesystems to ensure better data integrity. + + Say yes here if you have a storage device that provides the + T10/SCSI Data Integrity Field or the T13/ATA External Path + Protection. If in doubt, say N. + +endif # BLOCK + +config BLOCK_COMPAT + bool + depends on BLOCK && COMPAT + default y + +source block/Kconfig.iosched |