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Seunghun Lee authored
Overlayfs should be mounted read-only when upper-fs is read-only or nonexistent. But now it can be remounted read-write and this can cause kernel panic. So we should prevent read-write remount when the above situation happens. Signed-off-by:
Seunghun Lee <waydi1@gmail.com> Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz>
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