[dm-devel] [PATCH v2 06/11] libmultipath: add callback for remove_map()

[mwilck at suse.com]

From: Martin Wilck <mwilck at suse.com>

This callback is be used by multipathd to unblock pending
reconfigure requests if a map is removed that multipathd is currently
waiting for.

Signed-off-by: Martin Wilck <mwilck at suse.com>
---
 libmultipath/libmultipath.version | 3 ++-
 libmultipath/structs_vec.c        | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/libmultipath/libmultipath.version b/libmultipath/libmultipath.version
index 216f0ee..8132df7 100644
--- a/libmultipath/libmultipath.version
+++ b/libmultipath/libmultipath.version
@@ -31,7 +31,7 @@
  *   The new version inherits the previous ones.
  */
 
-LIBMULTIPATH_14.0.0 {
+LIBMULTIPATH_14.1.0 {
 global:
 	/* symbols referenced by multipath and multipathd */
 	add_foreign;
@@ -164,6 +164,7 @@ global:
 	remember_wwid;
 	remove_map;
 	remove_map_by_alias;
+	remove_map_callback;
 	remove_maps;
 	remove_wwid;
 	replace_wwids;
diff --git a/libmultipath/structs_vec.c b/libmultipath/structs_vec.c
index 6c23df8..a69f064 100644
--- a/libmultipath/structs_vec.c
+++ b/libmultipath/structs_vec.c
@@ -336,11 +336,17 @@ void set_path_removed(struct path *pp)
 	pp->initialized = INIT_REMOVED;
 }
 
+void remove_map_callback(struct multipath *mpp __attribute__((unused)))
+{
+}
+
 void
 remove_map(struct multipath *mpp, vector pathvec, vector mpvec)
 {
 	int i;
 
+	remove_map_callback(mpp);
+
 	free_pathvec(mpp->paths, KEEP_PATHS);
 	free_pgvec(mpp->pg, KEEP_PATHS);
 	mpp->paths = mpp->pg = NULL;
-- 
2.35.1