[PATCH] dump.f2fs: allow dump data on mounted image

[Chao Yu]

xfstests assumes it's allow to dump data on mounted image, for example,
some common functions call dumpe2fs on mounted ext[2|3|4] image to check
feature lists. To adapt such requirement, let's follow that rule in
dump.f2fs.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fsck/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fsck/main.c b/fsck/main.c
index e20f31ca09e4..675c603b1a76 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -744,7 +744,7 @@ int main(int argc, char **argv)
 
 	f2fs_parse_options(argc, argv);
 
-	if (f2fs_devs_are_umounted() < 0) {
+	if (c.func != DUMP && f2fs_devs_are_umounted() < 0) {
 		if (errno == EBUSY)
 			return -1;
 		if (!c.ro || c.func == DEFRAG) {
-- 
2.18.0.rc1