Why are there a lot of processes named ext4-dio-unwrit on my system?

Solution Unverified - Updated -

Issue

  • There are a lot of processes with the name ext4-dio-unwrit running on the system.
  • What are those processes?
  • Why so many ext4-dio-unwrit processes?

Environment

  • Red Hat Enterprise Linux 5.6 and later
  • Red Hat Enterprise Linux 6

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