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f2fs: handle readonly filesystem in f2fs_ioc_shutdown()

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[ 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>
This commit is contained in:
Chao Yu 2020-06-08 20:03:16 +08:00 committed by Greg Kroah-Hartman
parent 039a79ef0b
commit 390f1688fb
1 changed files with 8 additions and 1 deletions
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9
fs/f2fs/file.c
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@ -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) {