smbd: Add a explanation for num_aio_requests

We could have used talloc_array_length()

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

diff --git a/source3/include/vfs.h b/source3/include/vfs.h
index 8c35fa5ecc7aa8cb0d3a22d54f5121208d0eddc1..10d7fb0621a3f8ab47450c358274b54547f625c3 100644 (file)
--- a/source3/include/vfs.h
+++ b/source3/include/vfs.h
@@ -378,6 +378,10 @@ typedef struct files_struct {
        /* if not NULL, means this is a print file */
        struct print_file_data *print_file;
 
+       /*
+        * Optimize the aio_requests array for high performance: Never
+        * shrink it, maintain num_aio_requests separately
+        */
        unsigned num_aio_requests;
        struct tevent_req **aio_requests;