diff options
Diffstat (limited to 'fs/xfs/Kconfig')
| -rw-r--r-- | fs/xfs/Kconfig | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig index db60944ab3c3..54806c2b80d4 100644 --- a/fs/xfs/Kconfig +++ b/fs/xfs/Kconfig @@ -106,7 +106,6 @@ config XFS_ONLINE_SCRUB default n depends on XFS_FS depends on TMPFS && SHMEM - depends on SRCU select XFS_LIVE_HOOKS select XFS_DRAIN_INTENTS help @@ -122,6 +121,38 @@ config XFS_ONLINE_SCRUB If unsure, say N. +choice + prompt "XFS hook implementation" + depends on XFS_FS && XFS_LIVE_HOOKS && XFS_ONLINE_SCRUB + default XFS_LIVE_HOOKS_BLOCKING if HAVE_ARCH_JUMP_LABEL + default XFS_LIVE_HOOKS_SRCU if !HAVE_ARCH_JUMP_LABEL + help + Pick one + +config XFS_LIVE_HOOKS_SRCU + bool "SRCU notifier chains" + depends on SRCU + help + Use SRCU notifier chains for filesystem hooks. These have very low + overhead for event initiators (the main filesystem) and higher + overhead for chain modifiers (scrub waits for RCU grace). This is + the best option when jump labels are not supported or there are many + CPUs in the system. + + This may cause problems with CPU hotplug invoking reclaim invoking + XFS. + +config XFS_LIVE_HOOKS_BLOCKING + bool "Blocking notifier chains" + help + Use blocking notifier chains for filesystem hooks. These have medium + overhead for event initiators (the main fs) and chain modifiers + (scrub) due to their use of rwsems. This is the best option when + jump labels can be used to eliminate overhead for the filesystem when + scrub is not running. + +endchoice + config XFS_ONLINE_REPAIR bool "XFS online metadata repair support" default n |