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n_tty: Split n_tty_chars_in_buffer() for reader-only interface
authorPeter Hurley <peter@hurleysoftware.com>
Sat, 15 Jun 2013 13:14:18 +0000 (09:14 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 23 Jul 2013 23:43:00 +0000 (16:43 -0700)
N_TTY .chars_in_buffer() method requires serialized access if
the current thread is not the single-consumer, n_tty_read().

Separate the internal interface; prepare for lockless read-side.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/n_tty.c patch | blob | history

diff --cc drivers/tty/n_tty.c
Simple merge
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