In discard mode, if splice() is available, open a file descriptor to /dev/null and splice the input to that, to improve performance (#191).

2026-05-03 14:53:45 +01:00
parent b75ecd79d5
commit 11d727a88d
7 changed files with 37 additions and 13 deletions
@@ -467,6 +467,8 @@ struct pvstate_s {
 		int intermediate_pipe[2];
 		int intermediate_pipe_buffer_size;
 		int intermediate_pipe_buffer_used;
+		/* File descriptor to /dev/null for splicing with -X. */
+		int discard_fd;
 		/*
 		 * These variables are used to keep track of whether
 		 * splice() was used; splice_failed_fd is the file