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SubjectRe: [PATCH 2/4] SUNRPC: remove cache_detail->cache_upcall callback
On Tue, 15 Jan 2013 11:09:36 +0300
Stanislav Kinsbursky <skinsbursky@parallels.com> wrote:

> This callback is redundant since all that its' implementations are doing is
> calling sunrpc_cache_pipe_upcall() with proper function address argument. This
> function address is now stored on cache_detail structure and thus all the code
> can be simplified.
>
> Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
> ---
> fs/nfsd/export.c | 12 ------------
> fs/nfsd/nfs4idmap.c | 14 --------------
> include/linux/sunrpc/cache.h | 3 ---
> net/sunrpc/auth_gss/svcauth_gss.c | 7 -------
> net/sunrpc/cache.c | 6 +++---
> net/sunrpc/svcauth_unix.c | 12 ------------
> 6 files changed, 3 insertions(+), 51 deletions(-)
>
> diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
> index 63ee3bc..6f030a5 100644
> --- a/fs/nfsd/export.c
> +++ b/fs/nfsd/export.c
> @@ -67,11 +67,6 @@ static void expkey_request(struct cache_detail *cd,
> (*bpp)[-1] = '\n';
> }
>
> -static int expkey_upcall(struct cache_detail *cd, struct cache_head *h)
> -{
> - return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
> -}
> -
> static struct svc_expkey *svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
> struct svc_expkey *old);
> static struct svc_expkey *svc_expkey_lookup(struct cache_detail *cd, struct svc_expkey *);
> @@ -245,7 +240,6 @@ static struct cache_detail svc_expkey_cache_template = {
> .hash_size = EXPKEY_HASHMAX,
> .name = "nfsd.fh",
> .cache_put = expkey_put,
> - .cache_upcall = expkey_upcall,
> .cache_request = expkey_request,
> .cache_parse = expkey_parse,
> .cache_show = expkey_show,
> @@ -338,11 +332,6 @@ static void svc_export_request(struct cache_detail *cd,
> (*bpp)[-1] = '\n';
> }
>
> -static int svc_export_upcall(struct cache_detail *cd, struct cache_head *h)
> -{
> - return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
> -}
> -
> static struct svc_export *svc_export_update(struct svc_export *new,
> struct svc_export *old);
> static struct svc_export *svc_export_lookup(struct svc_export *);
> @@ -712,7 +701,6 @@ static struct cache_detail svc_export_cache_template = {
> .hash_size = EXPORT_HASHMAX,
> .name = "nfsd.export",
> .cache_put = svc_export_put,
> - .cache_upcall = svc_export_upcall,
> .cache_request = svc_export_request,
> .cache_parse = svc_export_parse,
> .cache_show = svc_export_show,
> diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
> index 9033dfd..d9402ea 100644
> --- a/fs/nfsd/nfs4idmap.c
> +++ b/fs/nfsd/nfs4idmap.c
> @@ -140,12 +140,6 @@ idtoname_request(struct cache_detail *cd, struct cache_head *ch, char **bpp,
> }
>
> static int
> -idtoname_upcall(struct cache_detail *cd, struct cache_head *ch)
> -{
> - return sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
> -}
> -
> -static int
> idtoname_match(struct cache_head *ca, struct cache_head *cb)
> {
> struct ent *a = container_of(ca, struct ent, h);
> @@ -192,7 +186,6 @@ static struct cache_detail idtoname_cache_template = {
> .hash_size = ENT_HASHMAX,
> .name = "nfs4.idtoname",
> .cache_put = ent_put,
> - .cache_upcall = idtoname_upcall,
> .cache_request = idtoname_request,
> .cache_parse = idtoname_parse,
> .cache_show = idtoname_show,
> @@ -322,12 +315,6 @@ nametoid_request(struct cache_detail *cd, struct cache_head *ch, char **bpp,
> }
>
> static int
> -nametoid_upcall(struct cache_detail *cd, struct cache_head *ch)
> -{
> - return sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
> -}
> -
> -static int
> nametoid_match(struct cache_head *ca, struct cache_head *cb)
> {
> struct ent *a = container_of(ca, struct ent, h);
> @@ -366,7 +353,6 @@ static struct cache_detail nametoid_cache_template = {
> .hash_size = ENT_HASHMAX,
> .name = "nfs4.nametoid",
> .cache_put = ent_put,
> - .cache_upcall = nametoid_upcall,
> .cache_request = nametoid_request,
> .cache_parse = nametoid_parse,
> .cache_show = nametoid_show,
> diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
> index 4f1c858..249e73a 100644
> --- a/include/linux/sunrpc/cache.h
> +++ b/include/linux/sunrpc/cache.h
> @@ -80,9 +80,6 @@ struct cache_detail {
> char *name;
> void (*cache_put)(struct kref *);
>
> - int (*cache_upcall)(struct cache_detail *,
> - struct cache_head *);
> -
> void (*cache_request)(struct cache_detail *cd,
> struct cache_head *ch,
> char **bpp, int *blen);
> diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
> index 82437f9..1bd18af 100644
> --- a/net/sunrpc/auth_gss/svcauth_gss.c
> +++ b/net/sunrpc/auth_gss/svcauth_gss.c
> @@ -182,12 +182,6 @@ static void rsi_request(struct cache_detail *cd,
> (*bpp)[-1] = '\n';
> }
>
> -static int rsi_upcall(struct cache_detail *cd, struct cache_head *h)
> -{
> - return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
> -}
> -
> -
> static int rsi_parse(struct cache_detail *cd,
> char *mesg, int mlen)
> {
> @@ -275,7 +269,6 @@ static struct cache_detail rsi_cache_template = {
> .hash_size = RSI_HASHMAX,
> .name = "auth.rpcsec.init",
> .cache_put = rsi_put,
> - .cache_upcall = rsi_upcall,
> .cache_request = rsi_request,
> .cache_parse = rsi_parse,
> .match = rsi_match,
> diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
> index fc2f7aa..ee6b5dd 100644
> --- a/net/sunrpc/cache.c
> +++ b/net/sunrpc/cache.c
> @@ -196,9 +196,9 @@ EXPORT_SYMBOL_GPL(sunrpc_cache_update);
>
> static int cache_make_upcall(struct cache_detail *cd, struct cache_head *h)
> {
> - if (!cd->cache_upcall)
> + if (!cd->cache_request)
> return -EINVAL;
> - return cd->cache_upcall(cd, h);
> + return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
> }
>
> static inline int cache_is_valid(struct cache_detail *detail, struct cache_head *h)
> @@ -1605,7 +1605,7 @@ static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)
> if (p == NULL)
> goto out_nomem;
>
> - if (cd->cache_upcall || cd->cache_parse) {
> + if (cd->cache_request || cd->cache_parse) {
> p = proc_create_data("channel", S_IFREG|S_IRUSR|S_IWUSR,
> cd->u.procfs.proc_ent,
> &cache_file_operations_procfs, cd);
> diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
> index 6b03cc1..002ddd9 100644
> --- a/net/sunrpc/svcauth_unix.c
> +++ b/net/sunrpc/svcauth_unix.c
> @@ -157,11 +157,6 @@ static void ip_map_request(struct cache_detail *cd,
> (*bpp)[-1] = '\n';
> }
>
> -static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h)
> -{
> - return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
> -}
> -
> static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr);
> static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
>
> @@ -470,11 +465,6 @@ static void unix_gid_request(struct cache_detail *cd,
> (*bpp)[-1] = '\n';
> }
>
> -static int unix_gid_upcall(struct cache_detail *cd, struct cache_head *h)
> -{
> - return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
> -}
> -
> static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, uid_t uid);
>
> static int unix_gid_parse(struct cache_detail *cd,
> @@ -577,7 +567,6 @@ static struct cache_detail unix_gid_cache_template = {
> .hash_size = GID_HASHMAX,
> .name = "auth.unix.gid",
> .cache_put = unix_gid_put,
> - .cache_upcall = unix_gid_upcall,
> .cache_request = unix_gid_request,
> .cache_parse = unix_gid_parse,
> .cache_show = unix_gid_show,
> @@ -875,7 +864,6 @@ static struct cache_detail ip_map_cache_template = {
> .hash_size = IP_HASHMAX,
> .name = "auth.unix.ip",
> .cache_put = ip_map_put,
> - .cache_upcall = ip_map_upcall,
> .cache_request = ip_map_request,
> .cache_parse = ip_map_parse,
> .cache_show = ip_map_show,
>
> --
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I'm seeing a build break from this patch when CONFIG_NFS_USE_KERNEL_DNS
is not set:

CC [M] fs/nfs/dns_resolve.o
fs/nfs/dns_resolve.c: In function ‘nfs_dns_resolver_cache_init’:
fs/nfs/dns_resolve.c:377:4: error: ‘struct cache_detail’ has no member named ‘cache_upcall’
fs/nfs/dns_resolve.c:377:35: warning: left-hand operand of comma expression has no effect [-Wunused-value]
fs/nfs/dns_resolve.c:377:35: warning: value computed is not used [-Wunused-value]
fs/nfs/dns_resolve.c:377:35: warning: value computed is not used [-Wunused-value]
fs/nfs/dns_resolve.c:377:35: warning: value computed is not used [-Wunused-value]
fs/nfs/dns_resolve.c:377:35: warning: value computed is not used [-Wunused-value]
fs/nfs/dns_resolve.c:377:35: warning: value computed is not used [-Wunused-value]
fs/nfs/dns_resolve.c:377:35: warning: value computed is not used [-Wunused-value]
fs/nfs/dns_resolve.c: At top level:
fs/nfs/dns_resolve.c:129:13: warning: ‘nfs_dns_request’ defined but not used [-Wunused-function]
make[1]: *** [fs/nfs/dns_resolve.o] Error 1
make: *** [_module_fs/nfs] Error 2

...looks like you need to convert that cache_detail to use your new
scheme as well?

--
Jeff Layton <jlayton@redhat.com>
--
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