Add missing spinlock initializers

Thanks Agustina Arzille for the report

* ext2fs/ext2fs.h (global_lock, modified_global_blocks_lock): Declare
extern
* ext2fs/ext2fs.c (global_lock, modified_global_blocks_lock): Define and
initialize to PTHREAD_SPINLOCK_INITIALIZER.
* libtreefs/xinl.c (treefs_node_refcnt_lock): Likewise.

2 files changed, 5 insertions, 2 deletions

diff --git a/ext2fs/ext2fs.c b/ext2fs/ext2fs.c
index 1ead6d2f..4f38c927 100644
--- a/ext2fs/ext2fs.c
+++ b/ext2fs/ext2fs.c
@@ -55,6 +55,9 @@ struct store *store;
 struct store_parsed *store_parsed;
 
 char *diskfs_disk_name;
+
+pthread_spinlock_t global_lock = PTHREAD_SPINLOCK_INITIALIZER;
+pthread_spinlock_t modified_global_blocks_lock = PTHREAD_SPINLOCK_INITIALIZER;
 
 #ifdef EXT2FS_DEBUG
 int ext2_debug_flag;
diff --git a/ext2fs/ext2fs.h b/ext2fs/ext2fs.h
index afcd25c8..a3d22b28 100644
--- a/ext2fs/ext2fs.h
+++ b/ext2fs/ext2fs.h
@@ -433,7 +433,7 @@ void write_all_disknodes ();
 
 /* What to lock if changing global data data (e.g., the superblock or block
    group descriptors or bitmaps).  */
-pthread_spinlock_t global_lock;
+extern pthread_spinlock_t global_lock;
 
 /* Where to record such changes.  */
 struct pokel global_pokel;
@@ -442,7 +442,7 @@ struct pokel global_pokel;
    record which disk blocks are actually modified, so we don't stomp on parts
    of the disk which are backed by file pagers.  */
 unsigned char *modified_global_blocks;
-pthread_spinlock_t modified_global_blocks_lock;
+extern pthread_spinlock_t modified_global_blocks_lock;
 
 extern int global_block_modified (block_t block);
 extern void record_global_poke (void *ptr);