[PATCH AUTOSEL 5.7 101/388] f2fs: handle readonly filesystem in f2fs_ioc_shutdown()

Sasha Levin
2020-06-18T02:47:26Z

From: Chao Yu <yuchao0@huawei.com>

[ Upstream commit 8626441f05dc45a2f4693ee6863d02456ce39e60 ]

If mountpoint is readonly, we should allow shutdowning filesystem
successfully, this fixes issue found by generic/599 testcase of
xfstest.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/f2fs/file.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 6ab8f621a3c5..30b35915fa3a 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2219,8 +2219,15 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)

if (in != F2FS_GOING_DOWN_FULLSYNC) {
ret = mnt_want_write_file(filp);
- if (ret)
+ if (ret) {
+ if (ret == -EROFS) {
+ ret = 0;
+ f2fs_stop_checkpoint(sbi, false);
+ set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
+ trace_f2fs_shutdown(sbi, in, ret);
+ }
return ret;
+ }
}

switch (in) {
--
2.25.1