| .. | .. | 
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 | 1 | +# SPDX-License-Identifier: GPL-2.0-only  | 
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| 1 | 2 |  config XFS_FS | 
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| 2 | 3 |  	tristate "XFS filesystem support" | 
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| 3 | 4 |  	depends on BLOCK | 
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| 4 |  | -	depends on (64BIT || LBDAF)  | 
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| 5 | 5 |  	select EXPORTFS | 
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| 6 | 6 |  	select LIBCRC32C | 
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| 7 | 7 |  	select FS_IOMAP | 
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| .. | .. | 
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| 22 | 22 |  	  system of your root partition is compiled as a module, you'll need | 
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| 23 | 23 |  	  to use an initial ramdisk (initrd) to boot. | 
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| 24 | 24 |   | 
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 | 25 | +config XFS_SUPPORT_V4  | 
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 | 26 | +	bool "Support deprecated V4 (crc=0) format"  | 
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 | 27 | +	depends on XFS_FS  | 
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 | 28 | +	default y  | 
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 | 29 | +	help  | 
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 | 30 | +	  The V4 filesystem format lacks certain features that are supported  | 
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 | 31 | +	  by the V5 format, such as metadata checksumming, strengthened  | 
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 | 32 | +	  metadata verification, and the ability to store timestamps past the  | 
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 | 33 | +	  year 2038.  Because of this, the V4 format is deprecated.  All users  | 
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 | 34 | +	  should upgrade by backing up their files, reformatting, and restoring  | 
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 | 35 | +	  from the backup.  | 
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 | 36 | +  | 
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 | 37 | +	  Administrators and users can detect a V4 filesystem by running  | 
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 | 38 | +	  xfs_info against a filesystem mountpoint and checking for a string  | 
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 | 39 | +	  beginning with "crc=".  If the string "crc=0" is found, the  | 
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 | 40 | +	  filesystem is a V4 filesystem.  If no such string is found, please  | 
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 | 41 | +	  upgrade xfsprogs to the latest version and try again.  | 
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 | 42 | +  | 
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 | 43 | +	  This option will become default N in September 2025.  Support for the  | 
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 | 44 | +	  V4 format will be removed entirely in September 2030.  Distributors  | 
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 | 45 | +	  can say N here to withdraw support earlier.  | 
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 | 46 | +  | 
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 | 47 | +	  To continue supporting the old V4 format (crc=0), say Y.  | 
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 | 48 | +	  To close off an attack surface, say N.  | 
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 | 49 | +  | 
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| 25 | 50 |  config XFS_QUOTA | 
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| 26 | 51 |  	bool "XFS Quota support" | 
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| 27 | 52 |  	depends on XFS_FS | 
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