add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/nfs/Kconfig
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+# SPDX-License-Identifier: GPL-2.0-only
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 config NFS_FS
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 	tristate "NFS client support"
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 	depends on INET && FILE_LOCKING && MULTIUSER
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 config PNFS_BLOCK
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 	tristate
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 	depends on NFS_V4_1 && BLK_DEV_DM
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-	depends on 64BIT || LBDAF
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 	default NFS_V4
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 config PNFS_FLEXFILE_LAYOUT
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 	  If you want your system to mount its root file system via NFS,
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 	  choose Y here.  This is common practice for managing systems
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 	  without local permanent storage.  For details, read
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-	  <file:Documentation/filesystems/nfs/nfsroot.txt>.
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+	  <file:Documentation/admin-guide/nfs/nfsroot.rst>.
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 	  Most people say N here.
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 	depends on NFS_FS && SUNRPC_DEBUG
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 	select CRC32
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 	default y
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+
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+config NFS_DISABLE_UDP_SUPPORT
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+       bool "NFS: Disable NFS UDP protocol support"
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+       depends on NFS_FS
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+       default y
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+       help
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+	 Choose Y here to disable the use of NFS over UDP. NFS over UDP
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+	 on modern networks (1Gb+) can lead to data corruption caused by
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+	 fragmentation during high loads.
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+
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+config NFS_V4_2_READ_PLUS
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+	bool "NFS: Enable support for the NFSv4.2 READ_PLUS operation"
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+	depends on NFS_V4_2
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+	default n
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+	help
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+	 This is intended for developers only. The READ_PLUS operation has
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+	 been shown to have issues under specific conditions and should not
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+	 be used in production.