[FS#372] UML: build problem: "failed to allocate inode"

[LEDE Bugs]

The following task has a new comment added:

FS#372 - UML: build problem: "failed to allocate inode"
User who did this - Jo-Philipp Wich (jow-)

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You've exceeded the number of available inodes. Tune the ext4 params via menuconfig to get more.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=372#comment2075