The patch titled
alsa: nopage
has been removed from the -mm tree. Its filename was
alsa-nopage.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: alsa: nopage
From: Nick Piggin <npiggin@xxxxxxx>
Convert ALSA from nopage to fault.
Switch from OOM to SIGBUS if the resource is not available.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Cc: Jaroslav Kysela <perex@xxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
sound/core/pcm_native.c | 59 ++++++++++++++++----------------------
1 file changed, 25 insertions(+), 34 deletions(-)
diff -puN sound/core/pcm_native.c~alsa-nopage sound/core/pcm_native.c
--- a/sound/core/pcm_native.c~alsa-nopage
+++ a/sound/core/pcm_native.c
@@ -3021,26 +3021,23 @@ static unsigned int snd_pcm_capture_poll
/*
* mmap status record
*/
-static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area,
- unsigned long address, int *type)
+static int snd_pcm_mmap_status_fault(struct vm_area_struct *area,
+ struct vm_fault *vmf)
{
struct snd_pcm_substream *substream = area->vm_private_data;
struct snd_pcm_runtime *runtime;
- struct page * page;
if (substream == NULL)
- return NOPAGE_SIGBUS;
+ return VM_FAULT_SIGBUS;
runtime = substream->runtime;
- page = virt_to_page(runtime->status);
- get_page(page);
- if (type)
- *type = VM_FAULT_MINOR;
- return page;
+ vmf->page = virt_to_page(runtime->status);
+ get_page(vmf->page);
+ return 0;
}
static struct vm_operations_struct snd_pcm_vm_ops_status =
{
- .nopage = snd_pcm_mmap_status_nopage,
+ .fault = snd_pcm_mmap_status_fault,
};
static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file,
@@ -3064,26 +3061,23 @@ static int snd_pcm_mmap_status(struct sn
/*
* mmap control record
*/
-static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area,
- unsigned long address, int *type)
+static int snd_pcm_mmap_control_fault(struct vm_area_struct *area,
+ struct vm_fault *vmf)
{
struct snd_pcm_substream *substream = area->vm_private_data;
struct snd_pcm_runtime *runtime;
- struct page * page;
if (substream == NULL)
- return NOPAGE_SIGBUS;
+ return VM_FAULT_SIGBUS;
runtime = substream->runtime;
- page = virt_to_page(runtime->control);
- get_page(page);
- if (type)
- *type = VM_FAULT_MINOR;
- return page;
+ vmf->page = virt_to_page(runtime->control);
+ get_page(vmf->page);
+ return 0;
}
static struct vm_operations_struct snd_pcm_vm_ops_control =
{
- .nopage = snd_pcm_mmap_control_nopage,
+ .fault = snd_pcm_mmap_control_fault,
};
static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file,
@@ -3120,10 +3114,10 @@ static int snd_pcm_mmap_control(struct s
#endif /* coherent mmap */
/*
- * nopage callback for mmapping a RAM page
+ * fault callback for mmapping a RAM page
*/
-static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area,
- unsigned long address, int *type)
+static int snd_pcm_mmap_data_fault(struct vm_area_struct *area,
+ struct vm_fault *vmf)
{
struct snd_pcm_substream *substream = area->vm_private_data;
struct snd_pcm_runtime *runtime;
@@ -3133,33 +3127,30 @@ static struct page *snd_pcm_mmap_data_no
size_t dma_bytes;
if (substream == NULL)
- return NOPAGE_SIGBUS;
+ return VM_FAULT_SIGBUS;
runtime = substream->runtime;
- offset = area->vm_pgoff << PAGE_SHIFT;
- offset += address - area->vm_start;
- snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_SIGBUS);
+ offset = vmf->pgoff << PAGE_SHIFT;
dma_bytes = PAGE_ALIGN(runtime->dma_bytes);
if (offset > dma_bytes - PAGE_SIZE)
- return NOPAGE_SIGBUS;
+ return VM_FAULT_SIGBUS;
if (substream->ops->page) {
page = substream->ops->page(substream, offset);
- if (! page)
- return NOPAGE_OOM; /* XXX: is this really due to OOM? */
+ if (!page)
+ return VM_FAULT_SIGBUS;
} else {
vaddr = runtime->dma_area + offset;
page = virt_to_page(vaddr);
}
get_page(page);
- if (type)
- *type = VM_FAULT_MINOR;
- return page;
+ vmf->page = page;
+ return 0;
}
static struct vm_operations_struct snd_pcm_vm_ops_data =
{
.open = snd_pcm_mmap_data_open,
.close = snd_pcm_mmap_data_close,
- .nopage = snd_pcm_mmap_data_nopage,
+ .fault = snd_pcm_mmap_data_fault,
};
/*
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
git-alsa.patch
git-dvb.patch
ia64-ia32-nopage.patch
ieee1394-nopage.patch
ib-nopage.patch
git-jfs.patch
git-kvm.patch
nfs-use-gfp_nofs-preloads-for-radix-tree-insertion.patch
git-sched.patch
sg-nopage.patch
git-block.patch
usb-mon-nopage.patch
slub-use-non-atomic-bit-unlock.patch
radix-tree-avoid-atomic-allocations-for-preloaded-insertions.patch
mm-dont-allow-ioremapping-of-ranges-larger-than-vmalloc-space.patch
mm-special-mapping-nopage.patch
agp-alpha-nopage.patch
vt-bitlock-fix.patch
radix_treeh-trivial-comment-correction.patch
inotify-fix-race.patch
inotify-remove-debug-code.patch
relay-nopage.patch
uio-nopage.patch
ext2-xip-check-fix.patch
fb-defio-nopage.patch
rewrite-rd.patch
rewrite-rd-fix.patch
rd-support-xip.patch
reiser4.patch
-
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