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    Subject[PATCH 5.4 077/314] f2fs: handle readonly filesystem in f2fs_ioc_shutdown()
    Date
    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 c3a9da79ac997..5d94abe467a4f 100644
    --- a/fs/f2fs/file.c
    +++ b/fs/f2fs/file.c
    @@ -2056,8 +2056,15 @@ 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


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