X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=libringbuffer%2Fshm.c;h=ea946ea3f5e2a6d2e46d3297ebe925135164272e;hb=f717926c7827f56c903d3f4302ac58ae76d47174;hp=c4c651e4b925543e373e9b016398636be4c03293;hpb=6548fca464f68be5ded73be6b9a479daf08e62d6;p=lttng-ust.git

diff --git a/libringbuffer/shm.c b/libringbuffer/shm.c
index c4c651e4..ea946ea3 100644
--- a/libringbuffer/shm.c
+++ b/libringbuffer/shm.c
@@ -134,6 +134,15 @@ struct shm_object *_shm_object_table_alloc_shm(struct shm_object_table *table,
 		PERROR("ftruncate");
 		goto error_ftruncate;
 	}
+	/*
+	 * Also ensure the file metadata is synced with the storage by using
+	 * fsync(2).
+	 */
+	ret = fsync(shmfd);
+	if (ret) {
+		PERROR("fsync");
+		goto error_fsync;
+	}
 	obj->shm_fd_ownership = 0;
 	obj->shm_fd = shmfd;
 
@@ -153,6 +162,7 @@ struct shm_object *_shm_object_table_alloc_shm(struct shm_object_table *table,
 	return obj;
 
 error_mmap:
+error_fsync:
 error_ftruncate:
 error_zero_file:
 error_fcntl: