Brian Goff a3765ce30c Optimizations for recurrsive unmount ...

When a recursive unmount fails, don't bother parsing the mount table to check
if what we expected to be a mountpoint is still mounted. `EINVAL` is
returned when you try to unmount something that is not a mountpoint, the
other cases of `EINVAL` would not apply here unless everything is just
wrong. Parsing the mount table over and over is relatively expensive,
especially in the code path that it's in.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: dd2108766017c13a19bdbfd1a56cd1358580e0bb
Component: engine

2018-01-11 16:13:16 -05:00

components/engine

Optimizations for recurrsive unmount

2018-01-11 16:13:16 -05:00

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