On 01.11.2022 10:25, Andrey Zhadchenko wrote:
+/* It is forbidden to call more than one vhost_blk_flush() simultaneously */
Let's add at least a warning for this case:
+static void vhost_blk_flush(struct vhost_blk *blk)
+{
+ int flush_bin;
+
+ spin_lock(&blk->flush_lock);
WARN_ON(blk->during_flush);
+ blk->during_flush = 1;
Because in the case of two flushes, first flush can hang infinitely
waiting for its flush_bin to get empty.
--
Best regards, Tikhomirov Pavel
Software Developer, Virtuozzo.
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