[LTP] [PATCH v2 1/2] Fix dio_append/aiodio_append tests

[Andrea Cervesato]

From: Andrea Cervesato <andrea.cervesato@suse.com>

Ensure that dio_append and aiodio_append will end all children if
parent asked for it. The way we have to do it, is to ensure that
*run_child variable is checked before opening the file to read.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 testcases/kernel/io/ltp-aiodio/common.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/io/ltp-aiodio/common.h b/testcases/kernel/io/ltp-aiodio/common.h
index 200bbe18e..9a2d27166 100644
--- a/testcases/kernel/io/ltp-aiodio/common.h
+++ b/testcases/kernel/io/ltp-aiodio/common.h
@@ -62,8 +62,12 @@ static inline void io_read(const char *filename, int filesize, volatile int *run
 	int i;
 	int r;
 
-	while ((fd = open(filename, O_RDONLY, 0666)) < 0)
+	while ((fd = open(filename, O_RDONLY, 0666)) < 0) {
+		if (!*run_child)
+			return;
+
 		usleep(100);
+	}
 
 	tst_res(TINFO, "child %i reading file", getpid());
 
@@ -102,8 +106,12 @@ static inline void io_read_eof(const char *filename, volatile int *run_child)
 	int fd;
 	int r;
 
-	while ((fd = open(filename, O_RDONLY, 0666)) < 0)
+	while ((fd = open(filename, O_RDONLY, 0666)) < 0) {
+		if (!*run_child)
+			return;
+
 		usleep(100);
+	}
 
 	tst_res(TINFO, "child %i reading file", getpid());
 
-- 
2.35.3