hannken fff1c84c3d Msdosfs on-disk meta data is not sufficient to create or validate file handles.
Maintain a tree of file handles, create nodes from msdosfs_vptofh() and keep
them until either the file gets unlinked or the file system gets unmounted.

Fixes the msdosfs part of PR #43745 (fhopen of an unlinked file causes problems
on multiple file systems)
2011-04-04 19:16:58 +00:00
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