[PATCH] clean up exports in fs/{open,read_write}.c

[PATCH] clean up exports in fs/{open,read_write}.c

[Eugene Teo]

Takashi-san fixed sound/isa/wavefront/wavefront_synth.c to use
request_firmware instead of sys_*. Since that is the last driver in the
kernel that uses sys_{read,close}, this patch kills these exports. sys_open
is left exported for sparc64 only.

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
---
 fs/open.c       |    4 ++--
 fs/read_write.c |    1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/open.c b/fs/open.c
index 1d9e5e9..dc121ce 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1056,7 +1056,9 @@ asmlinkage long sys_open(const char __user *filename, int flags, int mode)
 	prevent_tail_call(ret);
 	return ret;
 }
+#ifdef CONFIG_SPARC64
 EXPORT_SYMBOL_GPL(sys_open);
+#endif
 
 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
 			   int mode)
@@ -1148,8 +1150,6 @@ out_unlock:
 	return -EBADF;
 }
 
-EXPORT_SYMBOL(sys_close);
-
 /*
  * This routine simulates a hangup on the tty, to arrange that users
  * are given clean terminals at login time.
diff --git a/fs/read_write.c b/fs/read_write.c
index 507ddff..d913d1e 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -370,7 +370,6 @@ asmlinkage ssize_t sys_read(unsigned int fd, char __user * buf, size_t count)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(sys_read);
 
 asmlinkage ssize_t sys_write(unsigned int fd, const char __user * buf, size_t count)
 {

Re: [PATCH] clean up exports in fs/{open,read_write}.c

[Christoph Hellwig]

On Fri, Aug 24, 2007 at 11:33:10AM +0800, Eugene Teo wrote:
> Takashi-san fixed sound/isa/wavefront/wavefront_synth.c to use
> request_firmware instead of sys_*. Since that is the last driver in the
> kernel that uses sys_{read,close}, this patch kills these exports. sys_open
> is left exported for sparc64 only.

I can't find any spar user of it, so please kill it.  In the case a symbol
is needed only for a particular architecture it's better to do it in the
architecture-specific ksyms file than with an ifdef, btw.

Re: [PATCH] clean up exports in fs/{open,read_write}.c

[Arjan van de Ven]

Christoph Hellwig wrote:
> On Fri, Aug 24, 2007 at 11:33:10AM +0800, Eugene Teo wrote:
>> Takashi-san fixed sound/isa/wavefront/wavefront_synth.c to use
>> request_firmware instead of sys_*. Since that is the last driver in the
>> kernel that uses sys_{read,close}, this patch kills these exports. sys_open
>> is left exported for sparc64 only.
> 
> I can't find any spar user of it, so please kill it.  

it's in the solaris compat code which is modular


> In the case a symbol
> is needed only for a particular architecture it's better to do it in the
> architecture-specific ksyms file than with an ifdef, btw.

agreed.
(well if it's only 1 or 2, if it's "half of them" it's obviously a 
different story)

Re: [PATCH] clean up exports in fs/{open,read_write}.c

[Christoph Hellwig]

On Mon, Aug 27, 2007 at 03:49:01PM -0700, Arjan van de Ven wrote:
> Christoph Hellwig wrote:
> >On Fri, Aug 24, 2007 at 11:33:10AM +0800, Eugene Teo wrote:
> >>Takashi-san fixed sound/isa/wavefront/wavefront_synth.c to use
> >>request_firmware instead of sys_*. Since that is the last driver in the
> >>kernel that uses sys_{read,close}, this patch kills these exports. 
> >>sys_open
> >>is left exported for sparc64 only.
> >
> >I can't find any spar user of it, so please kill it.  
> 
> it's in the solaris compat code which is modular

While it does use some sys_ symbols, I can't find it use sys_open.

Re: [PATCH] clean up exports in fs/{open,read_write}.c

[Adrian Bunk]

On Fri, Aug 24, 2007 at 11:33:10AM +0800, Eugene Teo wrote:
> Takashi-san fixed sound/isa/wavefront/wavefront_synth.c to use
> request_firmware instead of sys_*. Since that is the last driver in the
> kernel that uses sys_{read,close}, this patch kills these exports. sys_open
> is left exported for sparc64 only.
>...

fs/binfmt_misc.c still uses sys_close.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed