Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / gfs2 / Kconfig

diff --git a/kernel/fs/gfs2/Kconfig b/kernel/fs/gfs2/Kconfig
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+config GFS2_FS
+       tristate "GFS2 file system support"
+       depends on (64BIT || LBDAF)
+       select FS_POSIX_ACL
+       select CRC32
+       select QUOTACTL
+       help
+         A cluster filesystem.
+
+         Allows a cluster of computers to simultaneously use a block device
+         that is shared between them (with FC, iSCSI, NBD, etc...).  GFS reads
+         and writes to the block device like a local filesystem, but also uses
+         a lock module to allow the computers coordinate their I/O so
+         filesystem consistency is maintained.  One of the nifty features of
+         GFS is perfect consistency -- changes made to the filesystem on one
+         machine show up immediately on all other machines in the cluster.
+
+         To use the GFS2 filesystem in a cluster, you will need to enable
+         the locking module below. Documentation and utilities for GFS2 can
+         be found here: http://sources.redhat.com/cluster
+
+         The "nolock" lock module is now built in to GFS2 by default. If
+         you want to use the DLM, be sure to enable IPv4/6 networking.
+
+config GFS2_FS_LOCKING_DLM
+       bool "GFS2 DLM locking"
+       depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
+               CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
+       help
+         Multiple node locking module for GFS2
+
+         Most users of GFS2 will require this. It provides the locking
+         interface between GFS2 and the DLM, which is required to use GFS2
+         in a cluster environment.