liblttd: don't fill the page cache

[ltt-control.git] / liblttd / liblttd.h

diff --git a/liblttd/liblttd.h b/liblttd/liblttd.h
index 0b6b0584868411a6c870330d3b802de507ec7409..aac1e5dcd0b2bc74d095a2765ab573aa8a565cae 100644 (file)
--- a/liblttd/liblttd.h
+++ b/liblttd/liblttd.h
@@ -27,6 +27,7 @@
 
 #include <pthread.h>
 #include <dirent.h>
+#include <fcntl.h>
 
 /**
  * struct fd_pair - Contains the data associated with the channel file
@@ -39,6 +40,7 @@
  * @mmap: Not used anymore.
  * @mutex: a mutex for internal library usage
  * @user_data: library user data
+ * @offset: write position in the output file descriptor (optional)
  */
 struct fd_pair {
        int channel;
@@ -47,6 +49,7 @@ struct fd_pair {
        void *mmap;
        pthread_mutex_t mutex;
        void *user_data;
+       off_t offset;
 };
 
 struct channel_trace_fd {