| Message ID | 20210804160612.3575505-5-krisman@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | File system wide monitoring | expand |
Hi Gabriel,
I love your patch! Yet something to improve:
[auto build test ERROR on ext3/fsnotify]
[also build test ERROR on ext4/dev ext3/for_next linus/master v5.14-rc4 next-20210804]
[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]
url: https://github.com/0day-ci/linux/commits/Gabriel-Krisman-Bertazi/File-system-wide-monitoring/20210805-001201
base: https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git fsnotify
config: powerpc-ppc64_defconfig (attached as .config)
compiler: powerpc-linux-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/e5294af07c565333b5efb87d6b431d7d601a1043
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gabriel-Krisman-Bertazi/File-system-wide-monitoring/20210805-001201
git checkout e5294af07c565333b5efb87d6b431d7d601a1043
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/linux/fsnotify.h:15,
from arch/powerpc/platforms/cell/spufs/inode.c:15:
include/linux/fsnotify_backend.h:367:27: error: 'FSNOTIFY_MARK_FLAG_ATTACHED' defined but not used [-Werror=unused-const-variable=]
367 | static const unsigned int FSNOTIFY_MARK_FLAG_##flag = \
| ^~~~~~~~~~~~~~~~~~~
include/linux/fsnotify_backend.h:379:1: note: in expansion of macro 'FSNOTIFY_MARK_FLAG'
379 | FSNOTIFY_MARK_FLAG(ATTACHED);
| ^~~~~~~~~~~~~~~~~~
include/linux/fsnotify_backend.h:367:27: error: 'FSNOTIFY_MARK_FLAG_ALIVE' defined but not used [-Werror=unused-const-variable=]
367 | static const unsigned int FSNOTIFY_MARK_FLAG_##flag = \
| ^~~~~~~~~~~~~~~~~~~
include/linux/fsnotify_backend.h:378:1: note: in expansion of macro 'FSNOTIFY_MARK_FLAG'
378 | FSNOTIFY_MARK_FLAG(ALIVE);
| ^~~~~~~~~~~~~~~~~~
>> include/linux/fsnotify_backend.h:367:27: error: 'FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY' defined but not used [-Werror=unused-const-variable=]
367 | static const unsigned int FSNOTIFY_MARK_FLAG_##flag = \
| ^~~~~~~~~~~~~~~~~~~
include/linux/fsnotify_backend.h:377:1: note: in expansion of macro 'FSNOTIFY_MARK_FLAG'
377 | FSNOTIFY_MARK_FLAG(IGNORED_SURV_MODIFY);
| ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
vim +/FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY +367 include/linux/fsnotify_backend.h
365
366 #define FSNOTIFY_MARK_FLAG(flag) \
> 367 static const unsigned int FSNOTIFY_MARK_FLAG_##flag = \
368 (1 << FSN_MARK_FL_BIT_##flag)
369
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
On Wed 04-08-21 12:05:53, Gabriel Krisman Bertazi wrote: > Split out the final bits of struct fsnotify_mark->flags for use by a > backend. > > Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> > --- > include/linux/fsnotify_backend.h | 19 ++++++++++++++++--- > 1 file changed, 16 insertions(+), 3 deletions(-) > > diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h > index 1ce66748a2d2..9d5586445c65 100644 > --- a/include/linux/fsnotify_backend.h > +++ b/include/linux/fsnotify_backend.h > @@ -363,6 +363,21 @@ struct fsnotify_mark_connector { > struct hlist_head list; > }; > > +#define FSNOTIFY_MARK_FLAG(flag) \ > +static const unsigned int FSNOTIFY_MARK_FLAG_##flag = \ > + (1 << FSN_MARK_FL_BIT_##flag) Static variable declaration in a header file makes me a bit uneasy. I know it is const so a compiler should optimize this to a constant but still there will likely be some side-effects (see the 0-day warning). Honestly, given these are just three flags I'd just don't overengineer this and have: #define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY \ (1 << FSN_MARK_FL_BIT_IGNORED_SURV_MODIFY) ... Honza
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 1ce66748a2d2..9d5586445c65 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -363,6 +363,21 @@ struct fsnotify_mark_connector { struct hlist_head list; }; +#define FSNOTIFY_MARK_FLAG(flag) \ +static const unsigned int FSNOTIFY_MARK_FLAG_##flag = \ + (1 << FSN_MARK_FL_BIT_##flag) + +enum fsnotify_mark_bits { + FSN_MARK_FL_BIT_IGNORED_SURV_MODIFY, + FSN_MARK_FL_BIT_ALIVE, + FSN_MARK_FL_BIT_ATTACHED, + FSN_MARK_PRIVATE_FLAGS, +}; + +FSNOTIFY_MARK_FLAG(IGNORED_SURV_MODIFY); +FSNOTIFY_MARK_FLAG(ALIVE); +FSNOTIFY_MARK_FLAG(ATTACHED); + /* * A mark is simply an object attached to an in core inode which allows an * fsnotify listener to indicate they are either no longer interested in events @@ -398,9 +413,7 @@ struct fsnotify_mark { struct fsnotify_mark_connector *connector; /* Events types to ignore [mark->lock, group->mark_mutex] */ __u32 ignored_mask; -#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x01 -#define FSNOTIFY_MARK_FLAG_ALIVE 0x02 -#define FSNOTIFY_MARK_FLAG_ATTACHED 0x04 + /* Upper bits [31:PRIVATE_FLAGS] are reserved for backend usage */ unsigned int flags; /* flags [mark->lock] */ };
Split out the final bits of struct fsnotify_mark->flags for use by a backend. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> --- include/linux/fsnotify_backend.h | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)