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2023-12-11 223293205a7265c8b02882461ba8996650048ade

 kernel/fs/ext4/Kconfig
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@@ -1,14 +1,10 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 # Ext3 configs are here for backward compatibility with old configs which may
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 # have EXT3_FS set but not EXT4_FS set and thus would result in non-bootable
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 # kernels after the removal of ext3 driver.
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 config EXT3_FS
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 	tristate "The Extended 3 (ext3) filesystem"
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-	# These must match EXT4_FS selects...
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 	select EXT4_FS
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-	select JBD2
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-	select CRC16
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-	select CRYPTO
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-	select CRYPTO_CRC32C
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 	help
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 	  This config option is here only for backward compatibility. ext3
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 	  filesystem is now handled by the ext4 driver.
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@@ -32,7 +28,6 @@
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 config EXT4_FS
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 	tristate "The Extended 4 (ext4) filesystem"
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-	# Please update EXT3_FS selects when changing these
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 	select JBD2
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 	select CRC16
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 	select CRYPTO
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@@ -97,26 +92,28 @@
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 	  If you are not using a security module that requires using
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 	  extended attributes for file security labels, say N.
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-config EXT4_ENCRYPTION
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-	bool "Ext4 Encryption"
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-	depends on EXT4_FS
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-	select FS_ENCRYPTION
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-	help
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-	  This kconfig symbol is deprecated; now it just selects
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-	  FS_ENCRYPTION.  Use CONFIG_FS_ENCRYPTION=y in new config
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-	  files
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-
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-config EXT4_FS_ENCRYPTION
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-	bool
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-	default y
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-	depends on EXT4_ENCRYPTION
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-
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 config EXT4_DEBUG
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-	bool "EXT4 debugging support"
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+	bool "Ext4 debugging support"
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 	depends on EXT4_FS
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 	help
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 	  Enables run-time debugging support for the ext4 filesystem.
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 	  If you select Y here, then you will be able to turn on debugging
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-	  with a command such as:
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-		echo 1 > /sys/module/ext4/parameters/mballoc_debug
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+	  using dynamic debug control for mb_debug() / ext_debug() msgs.
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+
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+config EXT4_KUNIT_TESTS
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+	tristate "KUnit tests for ext4" if !KUNIT_ALL_TESTS
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+	depends on EXT4_FS && KUNIT
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+	default KUNIT_ALL_TESTS
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+	help
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+	  This builds the ext4 KUnit tests.
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+
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+	  KUnit tests run during boot and output the results to the debug log
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+	  in TAP format (https://testanything.org/). Only useful for kernel devs
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+	  running KUnit test harness and are not for inclusion into a production
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+	  build.
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+
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+	  For more information on KUnit and unit tests in general please refer
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+	  to the KUnit documentation in Documentation/dev-tools/kunit/.
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+
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+	  If unsure, say N.