new primitive: __fs_parse()

fs_parse() analogue taking p_log instead of fs_context.
fs_parse() turned into a wrapper, callers in ceph_common and rbd
switched to __fs_parse().

As the result, fs_parse() never gets NULL fs_context and neither
do fs_context-based logging primitives

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 596a118..47e82f0 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -6360,7 +6360,7 @@ static int rbd_parse_param(struct fs_parameter *param,
        if (ret != -ENOPARAM)
                return ret;
 
-       token = fs_parse(NULL, &rbd_parameters, param, &result);
+       token = __fs_parse(&log, &rbd_parameters, param, &result);
        dout("%s fs_parse '%s' token %d\n", __func__, param->key, token);
        if (token < 0) {
                if (token == -ENOPARAM)

diff --git a/fs/fs_parser.c b/fs/fs_parser.c
index dc5c673..dadb658 100644 (file)
--- a/fs/fs_parser.c
+++ b/fs/fs_parser.c
@@ -80,7 +80,7 @@ static const struct fs_parameter_spec *fs_lookup_key(
  * unknown parameters are okay and -EINVAL if there was a conversion issue or
  * the parameter wasn't recognised and unknowns aren't okay.
  */
-int fs_parse(struct fs_context *fc,
+int __fs_parse(struct p_log *log,
             const struct fs_parameter_description *desc,
             struct fs_parameter *param,
             struct fs_parse_result *result)
@@ -113,8 +113,7 @@ int fs_parse(struct fs_context *fc,
        }
 
        if (p->flags & fs_param_deprecated)
-               warnf(fc, "%s: Deprecated parameter '%s'",
-                     desc->name, param->key);
+               warn_plog(log, "Deprecated parameter '%s'", param->key);
 
        if (result->negated)
                goto okay;
@@ -152,8 +151,8 @@ int fs_parse(struct fs_context *fc,
        switch (p->type) {
        case fs_param_is_flag:
                if (param->type != fs_value_is_flag)
-                       return invalf(fc, "%s: Unexpected value for '%s'",
-                                     desc->name, param->key);
+                       return inval_plog(log, "Unexpected value for '%s'",
+                                     param->key);
                result->boolean = true;
                goto okay;
 
@@ -238,10 +237,20 @@ okay:
        return p->opt;
 
 bad_value:
-       return invalf(fc, "%s: Bad value for '%s'", desc->name, param->key);
+       return inval_plog(log, "Bad value for '%s'", param->key);
 unknown_parameter:
        return -ENOPARAM;
 }
+EXPORT_SYMBOL(__fs_parse);
+
+int fs_parse(struct fs_context *fc,
+            const struct fs_parameter_description *desc,
+            struct fs_parameter *param,
+            struct fs_parse_result *result)
+{
+       struct p_log log = {.prefix = desc->name, .log = fc->log};
+       return __fs_parse(&log, desc, param, result);
+}
 EXPORT_SYMBOL(fs_parse);
 
 /**

diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h
index 6a7eeb2..41f37d3 100644 (file)
--- a/include/linux/fs_context.h
+++ b/include/linux/fs_context.h
@@ -189,10 +189,8 @@ struct fc_log {
 extern __attribute__((format(printf, 4, 5)))
 void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt, ...);
 
-#define __logfc(fc, l, fmt, ...) ({            \
-       struct fs_context *__fc = (fc);         \
-       logfc(__fc ? __fc->log : NULL, NULL,    \
-               l, fmt, ## __VA_ARGS__);})
+#define __logfc(fc, l, fmt, ...) logfc((fc)->log, NULL, \
+                                       l, fmt, ## __VA_ARGS__)
 #define __plog(p, l, fmt, ...) logfc((p)->log, (p)->prefix, \
                                        l, fmt, ## __VA_ARGS__)
 /**

diff --git a/include/linux/fs_parser.h b/include/linux/fs_parser.h
index 14bdaac..b0fba26 100644 (file)
--- a/include/linux/fs_parser.h
+++ b/include/linux/fs_parser.h
@@ -74,6 +74,10 @@ struct fs_parse_result {
        };
 };
 
+extern int __fs_parse(struct p_log *log,
+                   const struct fs_parameter_description *desc,
+                   struct fs_parameter *value,
+                   struct fs_parse_result *result);
 extern int fs_parse(struct fs_context *fc,
                    const struct fs_parameter_description *desc,
                    struct fs_parameter *value,

diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index a3f4f00..9f8bc96 100644 (file)
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -407,7 +407,7 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
        int token, err;
        struct p_log log = {.prefix = "libceph", .log = fc ? fc->log : NULL};
 
-       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;