Merge ~canonical-kernel-team/+git/ltp:ag/fix-fs-fill into ~canonical-kernel-team/+git/ltp:sru

[Andrei Gherzan]

[Thadeu Lima de Souza Cascardo (cascardo)]

review: Approve

[Po-Hsu Lin (cypressyew)]

Tested with K-5.19 on kopter-kernel.
+1

review: Approve

[Po-Hsu Lin (cypressyew)]

Applied with "UBUNTU: SAUCE:" added to the title.

[Andrei Gherzan (agherzan)]

Thanks! I've tested this on a retrigger and it works as expected.

diff --git a/testcases/kernel/fs/fs_fill/fs_fill.c b/testcases/kernel/fs/fs_fill/fs_fill.c
index 66b3974..3bf7df5 100644
--- a/testcases/kernel/fs/fs_fill/fs_fill.c
+++ b/testcases/kernel/fs/fs_fill/fs_fill.c
@@ -18,6 +18,7 @@
 #include "tst_test.h"
 
 #define MNTPOINT "mntpoint"
+#define THREADS_SUBDIR "subdir"
 
 static volatile int run;
 static unsigned int nthreads;
@@ -94,9 +95,13 @@ static void setup(void)
 	nthreads = tst_ncpus_conf() + 2;
 	workers = SAFE_MALLOC(sizeof(struct worker) * nthreads);
 
+	// Avoid creating the thread directories in the root of the filesystem
+	// to not hit the root entries limit on a  FAT16 filesystem.
+	SAFE_MKDIR(MNTPOINT "/" THREADS_SUBDIR, 0700);
+
 	for (i = 0; i < nthreads; i++) {
 		snprintf(workers[i].dir, sizeof(workers[i].dir),
-			 MNTPOINT "/thread%i", i + 1);
+			 MNTPOINT "/" THREADS_SUBDIR "/thread%i", i + 1);
 		SAFE_MKDIR(workers[i].dir, 0700);
 	}