aio-posix: Improve comment around marking node deleted

The counter is for qemu_lockcnt_inc/dec sections (read side),
qemu_lockcnt_lock/unlock is for the write side.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20180803063917.30292-1-famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>

diff --git a/util/aio-posix.c b/util/aio-posix.c
index b5c609b68b599f12c2c8bfef124fad3d511a93ff..131ba6b4a81b1b1617a3a6825f110991eab736c1 100644 (file)
--- a/util/aio-posix.c
+++ b/util/aio-posix.c
@@ -232,7 +232,7 @@ void aio_set_fd_handler(AioContext *ctx,
             g_source_remove_poll(&ctx->source, &node->pfd);
         }
 
-        /* If the lock is held, just mark the node as deleted */
+        /* If a read is in progress, just mark the node as deleted */
         if (qemu_lockcnt_count(&ctx->list_lock)) {
             node->deleted = 1;
             node->pfd.revents = 0;