[alsa-devel] mmap ops in snd_pcm_ops

Scott Jiang scott.jiang.linux at gmail.com
Fri Jul 29 12:31:23 CEST 2011

Hi all,

I found there is a memory leak about 128K every time in linux-2.6.34,
but it doesn't exist in linux-3.0.
If I use mmap ops in driver the bug will come out, while use copy ops
no memory leak.
I tested with aplay to play a wav file.
Because there is a lot of changes in ALSA between 2.6.34 and 3.0, so
can anyone familiar
with the change history tell me which patch has solved this bug?
Thanks in advance.


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