Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs file system parameter updates from Al Viro:
 "Saner fs_parser.c guts and data structures. The system-wide registry
  of syntax types (string/enum/int32/oct32/.../etc.) is gone and so is
  the horror switch() in fs_parse() that would have to grow another case
  every time something got added to that system-wide registry.

  New syntax types can be added by filesystems easily now, and their
  namespace is that of functions - not of system-wide enum members. IOW,
  they can be shared or kept private and if some turn out to be widely
  useful, we can make them common library helpers, etc., without having
  to do anything whatsoever to fs_parse() itself.

  And we already get that kind of requests - the thing that finally
  pushed me into doing that was "oh, and let's add one for timeouts -
  things like 15s or 2h". If some filesystem really wants that, let them
  do it. Without somebody having to play gatekeeper for the variants
  blessed by direct support in fs_parse(), TYVM.

  Quite a bit of boilerplate is gone. And IMO the data structures make a
  lot more sense now. -200LoC, while we are at it"

* 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (25 commits)
  tmpfs: switch to use of invalfc()
  cgroup1: switch to use of errorfc() et.al.
  procfs: switch to use of invalfc()
  hugetlbfs: switch to use of invalfc()
  cramfs: switch to use of errofc() et.al.
  gfs2: switch to use of errorfc() et.al.
  fuse: switch to use errorfc() et.al.
  ceph: use errorfc() and friends instead of spelling the prefix out
  prefix-handling analogues of errorf() and friends
  turn fs_param_is_... into functions
  fs_parse: handle optional arguments sanely
  fs_parse: fold fs_parameter_desc/fs_parameter_spec
  fs_parser: remove fs_parameter_description name field
  add prefix to fs_context->log
  ceph_parse_param(), ceph_parse_mon_ips(): switch to passing fc_log
  new primitive: __fs_parse()
  switch rbd and libceph to p_log-based primitives
  struct p_log, variants of warnf() et.al. taking that one instead
  teach logfc() to handle prefices, give it saner calling conventions
  get rid of cg_invalf()
  ...

1 files changed, 19 insertions, 22 deletions

diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index a9d6c97b5b0d..a0e97f6c1072 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -269,7 +269,7 @@ enum {
 	Opt_abort_on_full,
 };
 
-static const struct fs_parameter_spec ceph_param_specs[] = {
+static const struct fs_parameter_spec ceph_parameters[] = {
 	fsparam_flag	("abort_on_full",		Opt_abort_on_full),
 	fsparam_flag_no ("cephx_require_signatures",	Opt_cephx_require_signatures),
 	fsparam_flag_no ("cephx_sign_messages",		Opt_cephx_sign_messages),
@@ -283,18 +283,13 @@ static const struct fs_parameter_spec ceph_param_specs[] = {
 	fsparam_u32	("osd_request_timeout",		Opt_osd_request_timeout),
 	fsparam_u32	("osdkeepalive",		Opt_osdkeepalivetimeout),
 	__fsparam	(fs_param_is_s32, "osdtimeout", Opt_osdtimeout,
-			 fs_param_deprecated),
+			 fs_param_deprecated, NULL),
 	fsparam_string	("secret",			Opt_secret),
 	fsparam_flag_no ("share",			Opt_share),
 	fsparam_flag_no ("tcp_nodelay",			Opt_tcp_nodelay),
 	{}
 };
 
-static const struct fs_parameter_description ceph_parameters = {
-        .name           = "libceph",
-        .specs          = ceph_param_specs,
-};
-
 struct ceph_options *ceph_alloc_options(void)
 {
 	struct ceph_options *opt;
@@ -337,7 +332,7 @@ EXPORT_SYMBOL(ceph_destroy_options);
 
 /* get secret from key store */
 static int get_secret(struct ceph_crypto_key *dst, const char *name,
-		      struct fs_context *fc)
+		      struct p_log *log)
 {
 	struct key *ukey;
 	int key_err;
@@ -351,19 +346,19 @@ static int get_secret(struct ceph_crypto_key *dst, const char *name,
 		key_err = PTR_ERR(ukey);
 		switch (key_err) {
 		case -ENOKEY:
-			errorf(fc, "libceph: Failed due to key not found: %s",
+			error_plog(log, "Failed due to key not found: %s",
 			       name);
 			break;
 		case -EKEYEXPIRED:
-			errorf(fc, "libceph: Failed due to expired key: %s",
+			error_plog(log, "Failed due to expired key: %s",
 			       name);
 			break;
 		case -EKEYREVOKED:
-			errorf(fc, "libceph: Failed due to revoked key: %s",
+			error_plog(log, "Failed due to revoked key: %s",
 			       name);
 			break;
 		default:
-			errorf(fc, "libceph: Failed due to key error %d: %s",
+			error_plog(log, "Failed due to key error %d: %s",
 			       key_err, name);
 		}
 		err = -EPERM;
@@ -383,15 +378,16 @@ out:
 }
 
 int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt,
-		       struct fs_context *fc)
+		       struct fc_log *l)
 {
+	struct p_log log = {.prefix = "libceph", .log = l};
 	int ret;
 
 	/* ip1[:port1][,ip2[:port2]...] */
 	ret = ceph_parse_ips(buf, buf + len, opt->mon_addr, CEPH_MAX_MON,
 			     &opt->num_mon);
 	if (ret) {
-		errorf(fc, "libceph: Failed to parse monitor IPs: %d", ret);
+		error_plog(&log, "Failed to parse monitor IPs: %d", ret);
 		return ret;
 	}
 
@@ -400,12 +396,13 @@ int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt,
 EXPORT_SYMBOL(ceph_parse_mon_ips);
 
 int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
-		     struct fs_context *fc)
+		     struct fc_log *l)
 {
 	struct fs_parse_result result;
 	int token, err;
+	struct p_log log = {.prefix = "libceph", .log = l};
 
-	token = fs_parse(fc, &ceph_parameters, param, &result);
+	token = __fs_parse(&log, ceph_parameters, param, &result);
 	dout("%s fs_parse '%s' token %d\n", __func__, param->key, token);
 	if (token < 0)
 		return token;
@@ -417,7 +414,7 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
 				     &opt->my_addr,
 				     1, NULL);
 		if (err) {
-			errorf(fc, "libceph: Failed to parse ip: %d", err);
+			error_plog(&log, "Failed to parse ip: %d", err);
 			return err;
 		}
 		opt->flags |= CEPH_OPT_MYIP;
@@ -426,7 +423,7 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
 	case Opt_fsid:
 		err = parse_fsid(param->string, &opt->fsid);
 		if (err) {
-			errorf(fc, "libceph: Failed to parse fsid: %d", err);
+			error_plog(&log, "Failed to parse fsid: %d", err);
 			return err;
 		}
 		opt->flags |= CEPH_OPT_FSID;
@@ -445,7 +442,7 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
 			return -ENOMEM;
 		err = ceph_crypto_key_unarmor(opt->key, param->string);
 		if (err) {
-			errorf(fc, "libceph: Failed to parse secret: %d", err);
+			error_plog(&log, "Failed to parse secret: %d", err);
 			return err;
 		}
 		break;
@@ -456,10 +453,10 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
 		opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
 		if (!opt->key)
 			return -ENOMEM;
-		return get_secret(opt->key, param->string, fc);
+		return get_secret(opt->key, param->string, &log);
 
 	case Opt_osdtimeout:
-		warnf(fc, "libceph: Ignoring osdtimeout");
+		warn_plog(&log, "Ignoring osdtimeout");
 		break;
 	case Opt_osdkeepalivetimeout:
 		/* 0 isn't well defined right now, reject it */
@@ -530,7 +527,7 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
 	return 0;
 
 out_of_range:
-	return invalf(fc, "libceph: %s out of range", param->key);
+	return inval_plog(&log, "%s out of range", param->key);
 }
 EXPORT_SYMBOL(ceph_parse_param);