From 9c323fcbc51493f79f9700cb20830d0857c72d99 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 28 Apr 2006 15:13:41 +0200 Subject: [ALSA] Fix mmap_count with O_APPEND opened streams Move mmap_count to snd_pcm_substream instead of runtime struct so that multiplly opened substreams via O_APPEND can be handled correctly. Signed-off-by: Takashi Iwai --- include/sound/pcm.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/sound') diff --git a/include/sound/pcm.h b/include/sound/pcm.h index cebf031..f84d849 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -300,7 +300,6 @@ struct snd_pcm_runtime { /* -- mmap -- */ volatile struct snd_pcm_mmap_status *status; volatile struct snd_pcm_mmap_control *control; - atomic_t mmap_count; /* -- locking / scheduling -- */ wait_queue_head_t sleep; @@ -369,6 +368,7 @@ struct snd_pcm_substream { /* -- assigned files -- */ void *file; int ref_count; + atomic_t mmap_count; unsigned int f_flags; void (*pcm_release)(struct snd_pcm_substream *); #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) @@ -972,13 +972,13 @@ struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigne static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) { struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; - atomic_inc(&substream->runtime->mmap_count); + atomic_inc(&substream->mmap_count); } static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) { struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; - atomic_dec(&substream->runtime->mmap_count); + atomic_dec(&substream->mmap_count); } /* mmap for io-memory area */ -- cgit v1.1