[PATCH] knfsd: svcrpc: gss: simplify rsc_parse()

Adopt a simpler convention for gss_mech_put(), to simplify rsc_parse().

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
index f8bac6c..d88468d 100644 (file)
--- a/net/sunrpc/auth_gss/gss_mech_switch.c
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -224,7 +224,8 @@ EXPORT_SYMBOL(gss_service_to_auth_domain_name);
 void
 gss_mech_put(struct gss_api_mech * gm)
 {
-       module_put(gm->gm_owner);
+       if (gm)
+               module_put(gm->gm_owner);
 }
 
 EXPORT_SYMBOL(gss_mech_put);
@@ -307,8 +308,7 @@ gss_delete_sec_context(struct gss_ctx       **context_handle)
                (*context_handle)->mech_type->gm_ops
                        ->gss_delete_sec_context((*context_handle)
                                                        ->internal_ctx_id);
-       if ((*context_handle)->mech_type)
-               gss_mech_put((*context_handle)->mech_type);
+       gss_mech_put((*context_handle)->mech_type);
        kfree(*context_handle);
        *context_handle=NULL;
        return GSS_S_COMPLETE;

diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index d51e316..71f57a5 100644 (file)
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -425,6 +425,7 @@ static int rsc_parse(struct cache_detail *cd,
        struct rsc rsci, *rscp = NULL;
        time_t expiry;
        int status = -EINVAL;
+       struct gss_api_mech *gm = NULL;
 
        memset(&rsci, 0, sizeof(rsci));
        /* context handle */
@@ -453,7 +454,6 @@ static int rsc_parse(struct cache_detail *cd,
                set_bit(CACHE_NEGATIVE, &rsci.h.flags);
        else {
                int N, i;
-               struct gss_api_mech *gm;
 
                /* gid */
                if (get_int(&mesg, &rsci.cred.cr_gid))
@@ -488,21 +488,17 @@ static int rsc_parse(struct cache_detail *cd,
                status = -EINVAL;
                /* mech-specific data: */
                len = qword_get(&mesg, buf, mlen);
-               if (len < 0) {
-                       gss_mech_put(gm);
+               if (len < 0)
                        goto out;
-               }
                status = gss_import_sec_context(buf, len, gm, &rsci.mechctx);
-               if (status) {
-                       gss_mech_put(gm);
+               if (status)
                        goto out;
-               }
-               gss_mech_put(gm);
        }
        rsci.h.expiry_time = expiry;
        rscp = rsc_update(&rsci, rscp);
        status = 0;
 out:
+       gss_mech_put(gm);
        rsc_free(&rsci);
        if (rscp)
                cache_put(&rscp->h, &rsc_cache);