write operations could be blocked even when using O_NONBLOCK
Issue
- This is a backport request of a fix to 5.2.z async erratum.
-
When write operation is issued, the mutex using tty->atomic_write_lock is held at the top of do_tty_write
(tty_io.c).
Environment
- Red Hat Enterprise Linux 5 Update 2
- All architectures
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.
