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authorRusty Russell <rusty@rustcorp.com.au>2010-08-11 23:04:12 -0600
committerRusty Russell <rusty@rustcorp.com.au>2010-08-11 23:04:13 +0930
commit9bbb9e5a33109b2832e2e63dcc7a132924ab374b (patch)
tree87270ed3a61d0d0e654a61c8d44504cdef330192 /fs/nfs
parenta14fe249a8f74269c9e636bcbaa78f5bdb354ce3 (diff)
downloadlinux-9bbb9e5a33109b2832e2e63dcc7a132924ab374b.tar.gz
param: use ops in struct kernel_param, rather than get and set fns directly
This is more kernel-ish, saves some space, and also allows us to expand the ops without breaking all the callers who are happy for the new members to be NULL. The few places which defined their own param types are changed to the new scheme (more which crept in recently fixed in following patches). Since we're touching them anyway, we change get() and set() to take a const struct kernel_param (which they really are). This causes some harmless warnings until we fix them (in following patches). To reduce churn, module_param_call creates the ops struct so the callers don't have to change (and casts the functions to reduce warnings). The modern version which takes an ops struct is called module_param_cb. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Takashi Iwai <tiwai@suse.de> Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Alessandro Rubini <rubini@ipvvis.unipv.it> Cc: Michal Januszewski <spock@gentoo.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Cc: linux-kernel@vger.kernel.org Cc: linux-input@vger.kernel.org Cc: linux-fbdev-devel@lists.sourceforge.net Cc: linux-nfs@vger.kernel.org Cc: netdev@vger.kernel.org
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/callback.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 36dfdae95123..e17b49e2eabd 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -45,7 +45,7 @@ unsigned short nfs_callback_tcpport;
unsigned short nfs_callback_tcpport6;
#define NFS_CALLBACK_MAXPORTNR (65535U)
-static int param_set_portnr(const char *val, struct kernel_param *kp)
+static int param_set_portnr(const char *val, const struct kernel_param *kp)
{
unsigned long num;
int ret;
@@ -58,11 +58,10 @@ static int param_set_portnr(const char *val, struct kernel_param *kp)
*((unsigned int *)kp->arg) = num;
return 0;
}
-
-static int param_get_portnr(char *buffer, struct kernel_param *kp)
-{
- return param_get_uint(buffer, kp);
-}
+static struct kernel_param_ops param_ops_portnr = {
+ .set = param_set_portnr,
+ .get = param_get_uint,
+};
#define param_check_portnr(name, p) __param_check(name, p, unsigned int);
module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644);