Commits on May 22, 2024

1. Add Filesystem::mount_or_else …

   When mounting a filesystem, often code like this is used:
   
       if !Filesystem::is_mountable(alloc, storage) {
           Filesystem::format(storage).ok();
       }
       Filesystem::mount(alloc, storage)
   
   This mounts the filesystem twice because Filesystem::is_mountable is
   equivalent to Filesystem::mount(...).is_ok().  Depending on the storage
   implementation, mounting the filesystem can have significant cost.
   But directly calling Filesystem::mount and re-mounting in the error case
   is prohibited by the borrow checker.
   
   This patch adds a mount_or_else method that accepts a callable that is
   called on mount error.  Afterwards, mounting is re-tried.

   

   robin-nitrokey committed May 22, 2024
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