X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=lib%2Faxmap.c;h=e847a387bc6b8ab984ca4ca4162183ef37b6dd0f;hp=8247fc1ae5d75f8aa452f2018bf248a6cc3a36a7;hb=fcf7b0721ccf1a197252731f19bf990272eb0843;hpb=1a4a019ce7c18e604d1cb47798546708719a6fd0

diff --git a/lib/axmap.c b/lib/axmap.c
index 8247fc1a..e847a387 100644
--- a/lib/axmap.c
+++ b/lib/axmap.c
@@ -387,15 +387,17 @@ static uint64_t axmap_find_first_free(struct axmap *axmap, unsigned int level,
 	return (uint64_t) -1ULL;
 }
 
-static uint64_t axmap_first_free(struct axmap *axmap)
+uint64_t axmap_first_free(struct axmap *axmap)
 {
 	uint64_t ret;
 
 	if (firstfree_valid(axmap))
 		return axmap->first_free;
 
+	fio_mutex_down(&axmap->lock);
 	ret = axmap_find_first_free(axmap, axmap->nr_levels - 1, 0);
 	axmap->first_free = ret;
+	fio_mutex_up(&axmap->lock);
 
 	return ret;
 }