block: prevent possible io_context->refcount overflow

[pandora-kernel.git] / block / Kconfig

diff --git a/block/Kconfig b/block/Kconfig
index ac0956f..2c39527 100644 (file)
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -26,6 +26,7 @@ if BLOCK
 config LBD
        bool "Support for large block devices and files"
        depends on !64BIT
+       default y
        help
          Enable block devices or files of size 2TB and larger.
 
@@ -36,23 +37,15 @@ config LBD
          This option also enables support for single files larger than
          2TB.
 
-         If unsure, say N.
+         The ext4 filesystem requires that this feature be enabled in
+         order to support filesystems that have the huge_file feature
+         enabled.  Otherwise, it will refuse to mount in the read-write
+         mode any filesystems that use the huge_file feature, which is
+         enabled by default by mke2fs.ext4.
 
-config BLK_DEV_IO_TRACE
-       bool "Support for tracing block io actions"
-       depends on SYSFS
-       select RELAY
-       select DEBUG_FS
-       select TRACEPOINTS
-       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:
+         The GFS2 filesystem also requires this feature.
 
-         git://git.kernel.dk/blktrace.git
-
-         If unsure, say N.
+         If unsure, say Y.
 
 config BLK_DEV_BSG
        bool "Block layer SG support v4 (EXPERIMENTAL)"