group_paths() is a wrapper around the pgpolicy functions, that pulls out
the common code from the beginning and the end. However since
one_group() didn't free the mp->paths vector, it has to set it to NULL,
to avoid having the wrapper code do that. Also, the pathgroups in
group_by_prio are now needlessly sorted afterwards.
Signed-off-by: Benjamin Marzinski <bmarz...@redhat.com>
---
libmultipath/configure.c | 2 +-
libmultipath/pgpolicies.c | 65 +++++++++++++--------------------------
libmultipath/pgpolicies.h | 2 +-
3 files changed, 23 insertions(+), 46 deletions(-)
diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index b09ef529..3c309d64 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -387,7 +387,7 @@ int setup_map(struct multipath *mpp, char *params, int
params_size,
vector_free(mpp->pg);
mpp->pg = NULL;
}
- if (mpp->pgpolicyfn && mpp->pgpolicyfn(mpp))
+ if (group_paths(mpp))
return 1;
/*
diff --git a/libmultipath/pgpolicies.c b/libmultipath/pgpolicies.c
index 660768a4..21d4f122 100644
--- a/libmultipath/pgpolicies.c
+++ b/libmultipath/pgpolicies.c
@@ -84,6 +84,26 @@ sort_pathgroups (struct multipath *mp) {
}
+int group_paths(struct multipath *mp)
+{
+ if (!mp->pg)
+ mp->pg = vector_alloc();
+ if (!mp->pg)
+ return 1;
+
+ if (VECTOR_SIZE(mp->paths) > 0 &&
+ (!mp->pgpolicyfn || mp->pgpolicyfn(mp))) {
+ vector_free(mp->pg);
+ mp->pg = NULL;
+ return 1;
+ }
+
+ sort_pathgroups(mp);
+ vector_free(mp->paths);
+ mp->paths = NULL;
+ return 0;
+}
+
/*
* One path group per unique tgt_node_name present in the path vector
*/
@@ -95,12 +115,6 @@ int group_by_node_name(struct multipath * mp)
struct pathgroup * pgp;
struct path * pp2;
- if (!mp->pg)
- mp->pg = vector_alloc();
-
- if (!mp->pg)
- return 1;
-
/* init the bitmap */
bitmap = (int *)MALLOC(VECTOR_SIZE(mp->paths) * sizeof (int));
@@ -146,9 +160,6 @@ int group_by_node_name(struct multipath * mp)
}
}
FREE(bitmap);
- sort_pathgroups(mp);
- free_pathvec(mp->paths, KEEP_PATHS);
- mp->paths = NULL;
return 0;
out2:
free_pathgroup(pgp, KEEP_PATHS);
@@ -171,12 +182,6 @@ int group_by_serial(struct multipath * mp)
struct pathgroup * pgp;
struct path * pp2;
- if (!mp->pg)
- mp->pg = vector_alloc();
-
- if (!mp->pg)
- return 1;
-
/* init the bitmap */
bitmap = (int *)MALLOC(VECTOR_SIZE(mp->paths) * sizeof (int));
@@ -221,9 +226,6 @@ int group_by_serial(struct multipath * mp)
}
}
FREE(bitmap);
- sort_pathgroups(mp);
- free_pathvec(mp->paths, KEEP_PATHS);
- mp->paths = NULL;
return 0;
out2:
free_pathgroup(pgp, KEEP_PATHS);
@@ -241,12 +243,6 @@ int one_path_per_group(struct multipath *mp)
struct path * pp;
struct pathgroup * pgp;
- if (!mp->pg)
- mp->pg = vector_alloc();
-
- if (!mp->pg)
- return 1;
-
for (i = 0; i < VECTOR_SIZE(mp->paths); i++) {
pp = VECTOR_SLOT(mp->paths, i);
pgp = alloc_pathgroup();
@@ -260,9 +256,6 @@ int one_path_per_group(struct multipath *mp)
if (store_path(pgp->paths, pp))
goto out1;
}
- sort_pathgroups(mp);
- free_pathvec(mp->paths, KEEP_PATHS);
- mp->paths = NULL;
return 0;
out1:
free_pathgroup(pgp, KEEP_PATHS);
@@ -276,15 +269,6 @@ int one_group(struct multipath *mp) /* aka multibus
*/
{
struct pathgroup * pgp;
- if (VECTOR_SIZE(mp->paths) < 0)
- return 0;
-
- if (!mp->pg)
- mp->pg = vector_alloc();
-
- if (!mp->pg)
- return 1;
-
if (VECTOR_SIZE(mp->paths) > 0) {
pgp = alloc_pathgroup();
@@ -297,6 +281,7 @@ int one_group(struct multipath *mp) /* aka multibus */
goto out1;
pgp->paths = mp->paths;
+ /* Do this to avoid freeing vector in group_paths */
mp->paths = NULL;
}
@@ -317,12 +302,6 @@ int group_by_prio(struct multipath *mp)
struct pathgroup * pgp;
vector pathvec = NULL;
- if (!mp->pg)
- mp->pg = vector_alloc();
-
- if (!mp->pg)
- return 1;
-
pathvec = vector_alloc();
if (!pathvec)
goto out;
@@ -387,8 +366,6 @@ int group_by_prio(struct multipath *mp)
}
}
free_pathvec(pathvec, KEEP_PATHS);
- free_pathvec(mp->paths, KEEP_PATHS);
- mp->paths = NULL;
return 0;
out2:
free_pathgroup(pgp, KEEP_PATHS);
diff --git a/libmultipath/pgpolicies.h b/libmultipath/pgpolicies.h
index c0eaa7f4..11834011 100644
--- a/libmultipath/pgpolicies.h
+++ b/libmultipath/pgpolicies.h
@@ -21,7 +21,7 @@ enum iopolicies {
int get_pgpolicy_id(char *);
int get_pgpolicy_name (char *, int, int);
-
+int group_paths(struct multipath *);
/*
* policies
*/
--
2.17.2
--
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