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The userspace automount(8) daemon is meant to perform a forced expire when sent a SIGUSR2. But since the expiration is routed through the kernel and the kernel doesn't send an expire request if the mount is busy this hasn't worked at least since autofs version 5. Add an AUTOFS_EXP_FORCED flag to allow implemention of the feature and bump the protocol version so user space can check if it's implemented if needed. Link: http://lkml.kernel.org/r/152937734715.21213.6594007182776598970.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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