[LTP] [PATCH 2/2] swapon03: Swap is not supported on TMPFS on tmpfs

[Petr Vorel]

tst_test.c:1701: TINFO: === Testing on ext4 ===
tst_test.c:1117: TINFO: Formatting /dev/loop0 with ext4 opts='' extra opts=''
mke2fs 1.47.0 (5-Feb-2023)
tst_test.c:1131: TINFO: Mounting /dev/loop0 to /tmp/LTP_swanIztq7/mntpoint fstyp=ext4 flags=0
tst_ioctl.c:26: TINFO: FIBMAP ioctl is supported
swapon03.c:164: TWARN: Failed to create swapfile: swapfile02: EINVAL (22)
swapon03.c:175: TFAIL: Failed to setup swaps

At least on kernel 6.7.

Fixes: 009a407a0 ("swapon/off: enable all_filesystem in swap test")
Reported-by: Dominique Leuenberger <dimstar@opensuse.org>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 testcases/kernel/syscalls/swapon/swapon03.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/testcases/kernel/syscalls/swapon/swapon03.c b/testcases/kernel/syscalls/swapon/swapon03.c
index 3dbcd5bfd..37314cc65 100644
--- a/testcases/kernel/syscalls/swapon/swapon03.c
+++ b/testcases/kernel/syscalls/swapon/swapon03.c
@@ -247,6 +247,9 @@ static void setup(void)
 	if (access("/proc/swaps", F_OK))
 		tst_brk(TCONF, "swap not supported by kernel");
 
+	if (tst_fs_type(".") == TST_TMPFS_MAGIC)
+		tst_brk(TCONF, "swap not supported on tmpfs");
+
 	is_swap_supported(TEST_FILE);
 }
 
-- 
2.43.0