D12648: Update mount point after mount operations

[David Edmundson]

davidedmundson created this revision.
davidedmundson added a reviewer: Plasma.
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REVISION SUMMARY
  The order of udisks evaluation has changed from:
  
  call Mount
  propertiesChanged
  mount call returns
  
  call Mount
  mount call returns
  propertiesChanged
  
  The mount has finished, but the property is not yet updated.
  
  Solid caches properties, updating them when they change. This worked
  before, but due to the re-ordering client code gets "setupDone" requests
  the mount point, gets an outdated version from the cache and we get
  errors. Invalidating the cache causes us to round-trip to the udisks
  daemon meaning we'll have the correct values.
  
  BUG: 370975

TEST PLAN
  Diagnosed but with dbus-monitor trace 
  Asked someone on the bug report to test this

REPOSITORY
  R245 Solid

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D12648

AFFECTED FILES
  src/solid/devices/backends/udisks2/udisksdevice.cpp
  src/solid/devices/backends/udisks2/udisksdevice.h
  src/solid/devices/backends/udisks2/udisksstorageaccess.cpp

To: davidedmundson, #plasma
Cc: #frameworks, michaelh, bruns
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