Issue #11382: Trivial system calls, such as dup() or pipe(), needn't
release the GIL. Patch by Charles-François Natali.
A
Antoine Pitrou committed
877509aef43034fec002eeafc9982e4b6c1c0b3d
Parent: 00bdbe1
release the GIL. Patch by Charles-François Natali.