[PATCH 01/53] Provide a mdstat_ent to subarray helper

From: Dan Williams

....before introducing another open coded instace of this conversion.

Signed-off-by: Dan Williams
---

managemon.c | 2 +-
mdadm.h | 5 +++++
util.c | 11 ++++-------
3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/managemon.c b/managemon.c
index bab0397..544c4a6 100644
--- a/managemon.c
+++ b/managemon.c
@@ -511,7 +511,7 @@ static void manage_new(struct mdstat_ent *mdstat,

new->container = container;

- inst = &mdstat->metadata_version[10+strlen(container->devname)+1];
+ inst = to_subarray(mdstat, container->devname);

new->info.array = mdi->array;
new->info.component_size = mdi->component_size;
diff --git a/mdadm.h b/mdadm.h
index 03dd41c..9787f9e 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -979,6 +979,11 @@ static inline int is_subarray(char *vers)
return (*vers == '/' || *vers == '-');
}

+static inline char *to_subarray(struct mdstat_ent *ent, char *container)
+{
+ return &ent->metadata_version[10+strlen(container)+1];
+}
+
#ifdef DEBUG
#define dprintf(fmt, arg...) \
fprintf(stderr, fmt, ##arg)
diff --git a/util.c b/util.c
index c9bdd6e..6f1c1d2 100644
--- a/util.c
+++ b/util.c
@@ -1437,14 +1437,11 @@ int is_subarray_active(char *subarray, char *container)
struct mdstat_ent *mdstat = mdstat_read(0, 0);
struct mdstat_ent *ent;

- for (ent = mdstat; ent; ent = ent->next) {
- if (is_container_member(ent, container)) {
- char *inst = &ent->metadata_version[10+strlen(container)+1];
-
- if (!subarray || strcmp(inst, subarray) == 0)
+ for (ent = mdstat; ent; ent = ent->next)
+ if (is_container_member(ent, container))
+ if (!subarray ||
+ strcmp(to_subarray(ent, container), subarray) == 0)
break;
- }
- }

free_mdstat(mdstat);


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