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Groups > linux.kernel > #1682525
| From | Al Viro <viro@ZenIV.linux.org.uk> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [git pull] vfs.git part 3 |
| Date | 2017-07-06 17:50 +0200 |
| Message-ID | <u0hct-7dv-17@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <u01r3-46w-3@gated-at.bofh.it> <u01U5-4wT-7@gated-at.bofh.it> <u0ggq-67f-13@gated-at.bofh.it> <u0gzM-6G5-7@gated-at.bofh.it> <u0gJr-6NU-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Jul 06, 2017 at 05:10:33PM +0200, Christoph Hellwig wrote:
> On Thu, Jul 06, 2017 at 04:03:30PM +0100, Al Viro wrote:
> > On Thu, Jul 06, 2017 at 04:48:40PM +0200, Christoph Hellwig wrote:
> >
> > > Just did the whole batch (patch below), but it seems like using a
> > > __bitwise type in SYSCALL_DEFINE* will always give warnings like:
> > >
> > > fs/read_write.c:1095:1: warning: cast to restricted __kernel_rwf_t
> > >
> > > which I'm not sure to deal with..
> >
> > #define __SC_CAST(t, a) (__force t) a
>
> doesn't seem to make a difference..
Works here...
; cat a.c
#include <linux/syscalls.h>
#undef __SC_CAST
#define __SC_CAST(t, a) (__force t)a
typedef int __bitwise __foo_t;
static __foo_t is_OK;
static int will_warn;
SYSCALL_DEFINE1(foo, __foo_t, arg)
{
is_OK = arg;
will_warn = arg;
return 0;
}
; make a.o C=2 CHECK=~/local/sparse/sparse
CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
CHECK arch/x86/purgatory/purgatory.c
CHECK arch/x86/purgatory/sha256.c
CHECK arch/x86/purgatory/string.c
arch/x86/purgatory/../boot/string.c:165:6: warning: symbol 'strchr' was not declared. Should it be static?
CHK include/generated/bounds.h
CHK include/generated/timeconst.h
CHK include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
DESCEND objtool
CHECK scripts/mod/empty.c
CHK scripts/mod/devicetable-offsets.h
CHK include/generated/timeconst.h
CHK include/generated/bounds.h
CHECK a.c
a.c:10:19: warning: incorrect type in assignment (different base types)
a.c:10:19: expected int static [signed] [toplevel] will_warn
a.c:10:19: got restricted __foo_t [usertype] arg
CC a.o
;
That - on #work.read_write, as in vfs.git at the moment...
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[git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-05 09:20 +0200
Re: [git pull] vfs.git part 3 Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-06 00:00 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-06 00:40 +0200
Re: [git pull] vfs.git part 3 Christoph Hellwig <hch@lst.de> - 2017-07-06 01:00 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-06 01:30 +0200
Re: [git pull] vfs.git part 3 Christoph Hellwig <hch@lst.de> - 2017-07-06 16:50 +0200
Re: [git pull] vfs.git part 3 Christoph Hellwig <hch@lst.de> - 2017-07-06 17:10 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-06 17:10 +0200
Re: [git pull] vfs.git part 3 Christoph Hellwig <hch@lst.de> - 2017-07-06 17:20 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-06 17:50 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-06 18:00 +0200
Re: [git pull] vfs.git part 3 Christoph Hellwig <hch@lst.de> - 2017-07-06 19:00 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-06 21:20 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-07 01:30 +0200
Re: [git pull] vfs.git part 3 Christoph Hellwig <hch@lst.de> - 2017-07-07 16:10 +0200
Re: [git pull] vfs.git part 3 Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-07 17:50 +0200
Re: [git pull] vfs.git part 3 Christopher Li <sparse@chrisli.org> - 2017-07-07 21:50 +0200
Re: [git pull] vfs.git part 3 Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-08 18:30 +0200
[RFC] ->poll() sparse annotations Al Viro <viro@ZenIV.linux.org.uk> - 2017-07-18 03:40 +0200
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