* [PATCH] fs: Kconfig: Alignment of code and text in the FS_DAX help section for better readability
@ 2026-08-21 10:14 Bhaskar Chowdhury
2026-08-23 19:46 ` kernel test robot
0 siblings, 1 reply; 2+ messages in thread
From: Bhaskar Chowdhury @ 2026-08-21 10:14 UTC (permalink / raw)
To: viro, brauner, jack, linux-fsdevel, linux-kernel; +Cc: Bhaskar Chowdhury
I thought eliminating the line break and add an empty line would improve the readability.
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
---
fs/Kconfig | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/Kconfig b/fs/Kconfig
index e05917adcd60..c341d364d53f 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -71,11 +71,10 @@ config FS_DAX
struct pages. For the nfit based NVDIMMs this can be enabled
using the ndctl utility:
- # ndctl create-namespace --force --reconfig=namespace0.0 \
- --mode=fsdax --map=mem
+ # ndctl create-namespace --force --reconfig=namespace0.0 --mode=fsdax --map=mem
+
+ See the 'create-namespace' man page for details on the overhead of --map=mem:
- See the 'create-namespace' man page for details on the overhead of
- --map=mem:
https://docs.pmem.io/ndctl-user-guide/ndctl-man-pages/ndctl-create-namespace
For ndctl to work CONFIG_DEV_DAX needs to be enabled as well. For most
--
2.55.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] fs: Kconfig: Alignment of code and text in the FS_DAX help section for better readability
2026-08-21 10:14 [PATCH] fs: Kconfig: Alignment of code and text in the FS_DAX help section for better readability Bhaskar Chowdhury
@ 2026-08-23 19:46 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-08-23 19:46 UTC (permalink / raw)
To: Bhaskar Chowdhury, viro, brauner, jack, linux-fsdevel,
linux-kernel
Cc: oe-kbuild-all, Bhaskar Chowdhury
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@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608240313.d7SDG2tE-lkp@intel.com/
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
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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