Re: [PATCH] fs: Kconfig: Alignment of code and text in the FS_DAX help section for better readability

[kernel test robot]

Hi Bhaskar,

kernel test robot noticed the following build errors:

[auto build test ERROR on brauner-vfs/vfs.all]
[also build test ERROR on linus/master v7.2 next-20260821]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Bhaskar-Chowdhury/fs-Kconfig-Alignment-of-code-and-text-in-the-FS_DAX-help-section-for-better-readability/20260821-154402
base:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all
patch link:    https://lore.kernel.org/r/20260821101824.23203-1-unixbhaskar%40gmail.com
patch subject: [PATCH] fs: Kconfig: Alignment of code and text in the FS_DAX help section for better readability
config: i386-randconfig-141-20260824 (attached as .config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
smatch: v0.5.0-9187-g5189e3fb
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260824/202608240313.d7SDG2tE-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608240313.d7SDG2tE-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> fs/Kconfig:76: syntax error
   fs/Kconfig:76:warning: ignoring unsupported character ':'
   fs/Kconfig:76: unknown statement "See"
   fs/Kconfig:78:warning: ignoring unsupported character ':'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '.'
   fs/Kconfig:78:warning: ignoring unsupported character '.'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78: unknown statement "https"
   fs/Kconfig:80:warning: ignoring unsupported character '.'
   fs/Kconfig:80: unknown statement "For"
   fs/Kconfig:81: unknown statement "file"
   fs/Kconfig:82:warning: ignoring unsupported character '.'
   fs/Kconfig:82: unknown statement "per-inode"
   fs/Kconfig:83:warning: ignoring unsupported character '/'
   fs/Kconfig:83:warning: ignoring unsupported character '/'
   fs/Kconfig:83:warning: ignoring unsupported character '.'
   fs/Kconfig:83:warning: ignoring unsupported character '.'
   fs/Kconfig:83: unknown statement "Documentation"
   fs/Kconfig:85:warning: ignoring unsupported character ','
   fs/Kconfig:85: unknown statement "If"
   fs/Kconfig:86:warning: ignoring unsupported character ','
   fs/Kconfig:86:warning: ignoring unsupported character '.'
   fs/Kconfig:86: unknown statement "or"
   fs/Kconfig:87:warning: ignoring unsupported character '.'
   fs/Kconfig:87: unknown statement "by"
   make[3]: *** [scripts/kconfig/Makefile:85: oldconfig] Error 1
   make[2]: *** [Makefile:766: oldconfig] Error 2
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'oldconfig' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'oldconfig' not remade because of errors.
--
>> fs/Kconfig:76: syntax error
   fs/Kconfig:76:warning: ignoring unsupported character ':'
   fs/Kconfig:76: unknown statement "See"
   fs/Kconfig:78:warning: ignoring unsupported character ':'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '.'
   fs/Kconfig:78:warning: ignoring unsupported character '.'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78:warning: ignoring unsupported character '/'
   fs/Kconfig:78: unknown statement "https"
   fs/Kconfig:80:warning: ignoring unsupported character '.'
   fs/Kconfig:80: unknown statement "For"
   fs/Kconfig:81: unknown statement "file"
   fs/Kconfig:82:warning: ignoring unsupported character '.'
   fs/Kconfig:82: unknown statement "per-inode"
   fs/Kconfig:83:warning: ignoring unsupported character '/'
   fs/Kconfig:83:warning: ignoring unsupported character '/'
   fs/Kconfig:83:warning: ignoring unsupported character '.'
   fs/Kconfig:83:warning: ignoring unsupported character '.'
   fs/Kconfig:83: unknown statement "Documentation"
   fs/Kconfig:85:warning: ignoring unsupported character ','
   fs/Kconfig:85: unknown statement "If"
   fs/Kconfig:86:warning: ignoring unsupported character ','
   fs/Kconfig:86:warning: ignoring unsupported character '.'
   fs/Kconfig:86: unknown statement "or"
   fs/Kconfig:87:warning: ignoring unsupported character '.'
   fs/Kconfig:87: unknown statement "by"
   make[3]: *** [scripts/kconfig/Makefile:85: olddefconfig] Error 1
   make[2]: *** [Makefile:766: olddefconfig] Error 2
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'olddefconfig' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'olddefconfig' not remade because of errors.


vim +76 fs/Kconfig

    57	
    58	config FS_DAX
    59		bool "File system based Direct Access (DAX) support"
    60		depends on MMU
    61		depends on ZONE_DEVICE
    62		select FS_IOMAP
    63		select DAX
    64		help
    65		  Direct Access (DAX) can be used on memory-backed block devices.
    66		  If the block device supports DAX and the filesystem supports DAX,
    67		  then you can avoid using the pagecache to buffer I/Os.  Turning
    68		  on this option will compile in support for DAX.
    69	
    70		  For a DAX device to support file system access it needs to have
    71		  struct pages.  For the nfit based NVDIMMs this can be enabled
    72		  using the ndctl utility:
    73	
    74		# ndctl create-namespace --force --reconfig=namespace0.0 --mode=fsdax --map=mem
    75	
  > 76		  See the 'create-namespace' man page for details on the overhead of --map=mem:
    77	
    78		  https://docs.pmem.io/ndctl-user-guide/ndctl-man-pages/ndctl-create-namespace
    79	
    80		  For ndctl to work CONFIG_DEV_DAX needs to be enabled as well. For most
    81		  file systems DAX support needs to be manually enabled globally or
    82		  per-inode using a mount option as well.  See the file documentation in
    83		  Documentation/filesystems/dax.rst for details.
    84	
    85		  If you do not have a block device that is capable of using this,
    86		  or if unsure, say N.  Saying Y will increase the size of the kernel
    87		  by about 5kB.
    88	

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