Merge tag 'v5.10-rc1' into kvmarm-master/next

[linux-2.6-microblaze.git] / fs / xfs / Kconfig

diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
index e685299..9fac5ea 100644 (file)
--- a/fs/xfs/Kconfig
+++ b/fs/xfs/Kconfig
@@ -22,6 +22,31 @@ config XFS_FS
          system of your root partition is compiled as a module, you'll need
          to use an initial ramdisk (initrd) to boot.
 
+config XFS_SUPPORT_V4
+       bool "Support deprecated V4 (crc=0) format"
+       depends on XFS_FS
+       default y
+       help
+         The V4 filesystem format lacks certain features that are supported
+         by the V5 format, such as metadata checksumming, strengthened
+         metadata verification, and the ability to store timestamps past the
+         year 2038.  Because of this, the V4 format is deprecated.  All users
+         should upgrade by backing up their files, reformatting, and restoring
+         from the backup.
+
+         Administrators and users can detect a V4 filesystem by running
+         xfs_info against a filesystem mountpoint and checking for a string
+         beginning with "crc=".  If the string "crc=0" is found, the
+         filesystem is a V4 filesystem.  If no such string is found, please
+         upgrade xfsprogs to the latest version and try again.
+
+         This option will become default N in September 2025.  Support for the
+         V4 format will be removed entirely in September 2030.  Distributors
+         can say N here to withdraw support earlier.
+
+         To continue supporting the old V4 format (crc=0), say Y.
+         To close off an attack surface, say N.
+
 config XFS_QUOTA
        bool "XFS Quota support"
        depends on XFS_FS