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| author | Takashi Iwai <tiwai@suse.de> | 2006-04-28 15:13:41 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-06-22 21:33:14 +0200 |
| commit | 9c323fcbc51493f79f9700cb20830d0857c72d99 (patch) | |
| tree | 17e17046c0642f918b9516de8d9517914cabd0ad /include | |
| parent | 0df63e44c3e315ec0fe427ae62558231864108bd (diff) | |
| download | lwn-9c323fcbc51493f79f9700cb20830d0857c72d99.tar.gz lwn-9c323fcbc51493f79f9700cb20830d0857c72d99.zip | |
[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 <tiwai@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/pcm.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index cebf0310a8dc..f84d84993a31 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 */ |