vfs: make freeze_super abort when sync_filesystem returns error
stable inclusion from linux-4.19.231 commit d5c33270b8b2c274eb8df7b92d166166102528c6 -------------------------------- [ Upstream commit 2719c716 ] If we fail to synchronize the filesystem while preparing to freeze the fs, abort the freeze. Signed-off-by: NDarrick J. Wong <djwong@kernel.org> Reviewed-by: NJan Kara <jack@suse.cz> Reviewed-by: NChristoph Hellwig <hch@lst.de> Acked-by: NChristian Brauner <brauner@kernel.org> Signed-off-by: NSasha Levin <sashal@kernel.org> Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com> Signed-off-by: NLaibin Qiu <qiulaibin@huawei.com>
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