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SubjectRe: [Patch v2 13/15] CIFS: Add support for direct I/O read
Hi Long,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on v4.17-rc6]
[cannot apply to cifs/for-next next-20180601]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Long-Li/CIFS-Add-direct-I-O-support/20180602-130240
config: i386-randconfig-x000-201821 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All warnings (new ones prefixed by >>):

In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/wait.h:7,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from fs/cifs/file.c:24:
fs/cifs/file.c: In function 'cifs_direct_readv':
include/linux/kern_levels.h:5:18: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t {aka unsigned int}' [-Wformat=]
#define KERN_SOH "\001" /* ASCII Start Of Header */
^
include/linux/printk.h:136:10: note: in definition of macro 'no_printk'
printk(fmt, ##__VA_ARGS__); \
^~~
include/linux/kern_levels.h:15:20: note: in expansion of macro 'KERN_SOH'
#define KERN_DEBUG KERN_SOH "7" /* debug-level messages */
^~~~~~~~
include/linux/printk.h:342:12: note: in expansion of macro 'KERN_DEBUG'
no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
^~~~~~~~~~
>> fs/cifs/cifs_debug.h:82:3: note: in expansion of macro 'pr_debug'
pr_debug(fmt, ##__VA_ARGS__); \
^~~~~~~~
fs/cifs/file.c:3346:4: note: in expansion of macro 'cifs_dbg'
cifs_dbg(VFS,
^~~~~~~~
fs/cifs/file.c:3348:20: note: format string is defined here
" iov_offset %lu count %lu\n",
~~^
%u
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/wait.h:7,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from fs/cifs/file.c:24:
include/linux/kern_levels.h:5:18: warning: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'size_t {aka unsigned int}' [-Wformat=]
#define KERN_SOH "\001" /* ASCII Start Of Header */
^
include/linux/printk.h:136:10: note: in definition of macro 'no_printk'
printk(fmt, ##__VA_ARGS__); \
^~~
include/linux/kern_levels.h:15:20: note: in expansion of macro 'KERN_SOH'
#define KERN_DEBUG KERN_SOH "7" /* debug-level messages */
^~~~~~~~
include/linux/printk.h:342:12: note: in expansion of macro 'KERN_DEBUG'
no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
^~~~~~~~~~
>> fs/cifs/cifs_debug.h:82:3: note: in expansion of macro 'pr_debug'
pr_debug(fmt, ##__VA_ARGS__); \
^~~~~~~~
fs/cifs/file.c:3346:4: note: in expansion of macro 'cifs_dbg'
cifs_dbg(VFS,
^~~~~~~~
fs/cifs/file.c:3348:30: note: format string is defined here
" iov_offset %lu count %lu\n",
~~^
%u

vim +/pr_debug +82 fs/cifs/cifs_debug.h

f2f176b4 Aurelien Aptel 2018-04-10 73
^1da177e Linus Torvalds 2005-04-16 74 /*
^1da177e Linus Torvalds 2005-04-16 75 * debug OFF
^1da177e Linus Torvalds 2005-04-16 76 * ---------
^1da177e Linus Torvalds 2005-04-16 77 */
^1da177e Linus Torvalds 2005-04-16 78 #else /* _CIFS_DEBUG */
f96637be Joe Perches 2013-05-04 79 #define cifs_dbg(type, fmt, ...) \
bde98197 Joe Perches 2012-12-05 80 do { \
bde98197 Joe Perches 2012-12-05 81 if (0) \
0b456f04 Andy Shevchenko 2014-08-27 @82 pr_debug(fmt, ##__VA_ARGS__); \
bde98197 Joe Perches 2012-12-05 83 } while (0)
f96637be Joe Perches 2013-05-04 84 #endif
^1da177e Linus Torvalds 2005-04-16 85

:::::: The code at line 82 was first introduced by commit
:::::: 0b456f04bcdf5b1151136adaada158bfc26f1be7 cifs: convert printk(LEVEL...) to pr_<level>

:::::: TO: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
:::::: CC: Steve French <steve.french@primarydata.com>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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