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v6.1.146
linux-yocto/fs/dlm/Kconfig
Alexander Aring 81eeb82fc2 fs: dlm: add deprecation Kconfig and warnings for timeouts 
This patch adds a CONFIG_DLM_DEPRECATED_API Kconfig option
that must be enabled to use two timeout-related features
that we intend to remove in kernel v6.2.  Warnings are
printed if either is enabled and used.  Neither has ever
been used as far as we know.

. The DLM_LSFL_TIMEWARN lockspace creation flag will be
  removed, along with the associated configfs entry for
  setting the timeout.  Setting the flag and configfs file
  would cause dlm to track how long locks were waiting
  for reply messages.  After a timeout, a kernel message
  would be logged, and a netlink message would be sent
  to userspace.  Recently, midcomms messages have been
  added that produce much better logging about actual
  problems with messages.  No use has ever been found
  for the netlink messages.

. The userspace libdlm API has allowed the DLM_LKF_TIMEOUT
  flag with a timeout value to be set in lock requests.
  The lock request would be cancelled after the timeout.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
2022-08-01 09:31:32 -05:00

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SPDX-License-Identifier: GPL-2.0-only

menuconfig DLM tristate "Distributed Lock Manager (DLM)" depends on INET depends on SYSFS && CONFIGFS_FS && (IPV6 || IPV6=n) select IP_SCTP select SRCU help A general purpose distributed lock manager for kernel or userspace applications.

config DLM_DEPRECATED_API bool "DLM deprecated API" depends on DLM help Enables deprecated DLM timeout features that will be removed in later Linux kernel releases.

If you are unsure, say N.

config DLM_DEBUG bool "DLM debugging" depends on DLM help Under the debugfs mount point, the name of each lockspace will appear as a file in the "dlm" directory. The output is the list of resource and locks the local node knows about.