[LTP] [PATCH v2] ltp-aiodio/dio_sparse: Fix usleep in read_sparse()

[Guangwen Feng]

usleep(100000) sometimes leads to child process being too late
to do the read before being killed by parent process, tune it
to usleep(100) to make sure we do the real test in time.

Signed-off-by: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
---
 testcases/kernel/io/ltp-aiodio/common_sparse.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/io/ltp-aiodio/common_sparse.h b/testcases/kernel/io/ltp-aiodio/common_sparse.h
index f7f4ef4..7297319 100644
--- a/testcases/kernel/io/ltp-aiodio/common_sparse.h
+++ b/testcases/kernel/io/ltp-aiodio/common_sparse.h
@@ -113,7 +113,7 @@ static void read_sparse(char *filename, int filesize)
 	/*
 	 * Wait for the file to appear.
 	 */
-	for (i = 0; i < 10000; i++) {
+	for (i = 0; i < 10000000; i++) {
 		fd = open(filename, O_RDONLY);
 
 		if (fd != -1)
@@ -123,7 +123,7 @@ static void read_sparse(char *filename, int filesize)
 			fprintf(stderr, "Child %i waits for '%s' to appear\n",
 			        getpid(), filename);
 
-		usleep(100000);
+		usleep(100);
 	}
 
 	if (fd == -1) {
-- 
1.8.4.2