DragonFly- master sys/vfs/msdosfs msdosfs_denode.c

Matthew Dillon dillon at apollo.backplane.com
Sat Feb 28 15:53:32 PST 2009

    I'm not quite sure about this solution.  It it possible to delete
    the cached (dead) denode instead?


:    msdosfs: fix deleted-but-open files handling.
:    When deleting a file, msdosfs keeps its denode in the denode cache until it is
:    reclaimed.  This causes a collision in the cache when recycling the directory
:    entry of a deleted but still open file for a new or renamed file.  This
:    collision was incorrecly handled resulting in a kernel panic (rename case) or
:    syscall error and corrupted in-core state (new file case).
:    Fix by allowing denodes pointing to the same directory entry to coexist in the
:    cache as long as a single one of them represents an existing file.

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