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authorDamien Le Moal <dlemoal@kernel.org>2025-10-13 12:08:29 +0900
committerCarlos Maiolino <cem@kernel.org>2025-10-21 09:48:31 +0200
commit914f377075d646b4695a7868ba090f4c714dfd4b (patch)
treece4edd1621296d727a8af7afb65146c2fc272077
parent211ddde0823f1442e4ad052a2f30f050145ccada (diff)
xfs: Improve CONFIG_XFS_RT Kconfig help
Improve the description of the XFS_RT configuration option to document that this option is required for zoned block devices. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Signed-off-by: Carlos Maiolino <cem@kernel.org>
-rw-r--r--fs/xfs/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
index 8930d5254e1d..d66d517c99a9 100644
--- a/fs/xfs/Kconfig
+++ b/fs/xfs/Kconfig
@@ -119,6 +119,15 @@ config XFS_RT
See the xfs man page in section 5 for additional information.
+ This option is mandatory to support zoned block devices. For these
+ devices, the realtime subvolume must be backed by a zoned block
+ device and a regular block device used as the main device (for
+ metadata). If the zoned block device is a host-managed SMR hard-disk
+ containing conventional zones at the beginning of its address space,
+ XFS will use the disk conventional zones as the main device and the
+ remaining sequential write required zones as the backing storage for
+ the realtime subvolume.
+
If unsure, say N.
config XFS_DRAIN_INTENTS