blktrace: support discard requests

[blktrace.git] / blktrace_api.h

diff --git a/blktrace_api.h b/blktrace_api.h
index 67720deedf47a973d36210efd28f88ce7808be12..992850c06e76542980708040d83f7428bf7d7acb 100644 (file)
--- a/blktrace_api.h
+++ b/blktrace_api.h
@@ -20,6 +20,7 @@ enum {
        BLK_TC_NOTIFY   = 1 << 10,      /* special message */
        BLK_TC_AHEAD    = 1 << 11,      /* readahead */
        BLK_TC_META     = 1 << 12,      /* metadata */
+       BLK_TC_DISCARD  = 1 << 13,      /* discard requests */
 
        BLK_TC_END      = 1 << 15,      /* only 16-bits, reminder */
 };