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-rw-r--r--rumpdisk/block-rump.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/rumpdisk/block-rump.c b/rumpdisk/block-rump.c
index f7444260..afd91d49 100644
--- a/rumpdisk/block-rump.c
+++ b/rumpdisk/block-rump.c
@@ -335,6 +335,9 @@ device_get_status (void *d, dev_flavor_t flavor, dev_status_t status,
* Short term strategy:
*
* Make device_read/write multithreaded.
+ * Note: this would require an rwlock between device_open/close/read/write, to
+ * protect against e.g. concurrent open, unexpected close while read/write is
+ * called, etc.
*
* Long term strategy:
*