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-rw-r--r--erts/emulator/beam/code_ix.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/erts/emulator/beam/code_ix.h b/erts/emulator/beam/code_ix.h
index bac8c3365c..c37a5fe8f4 100644
--- a/erts/emulator/beam/code_ix.h
+++ b/erts/emulator/beam/code_ix.h
@@ -83,6 +83,7 @@ ErtsCodeIndex erts_staging_code_ix(void);
/* Try lock code_ix that is needed for (exlusive) access of the staging area.
* Main process lock (only) must be held.
+ * System thread progress must not be blocked.
* Caller is suspended and *must* yield if 0 is returned.
*/
int erts_try_lock_code_ix(struct process*);