On Thu 10-04-14 14:22:20, Hans Verkuil wrote:
On 04/10/14 14:15, Jan Kara wrote:
On Thu 10-04-14 13:07:42, Hans Verkuil wrote:
On 04/10/14 12:32, Jan Kara wrote:
Hello,
On Thu 10-04-14 12:02:50, Marek Szyprowski wrote:
On 2014-03-17 20:49, Jan Kara wrote:
The following patch
On Thu 10-04-14 23:57:38, Jan Kara wrote:
On Thu 10-04-14 14:22:20, Hans Verkuil wrote:
On 04/10/14 14:15, Jan Kara wrote:
On Thu 10-04-14 13:07:42, Hans Verkuil wrote:
On 04/10/14 12:32, Jan Kara wrote:
Hello,
On Thu 10-04-14 12:02:50, Marek Szyprowski wrote:
On 2014-03-17
On Mon 17-03-14 13:53:35, Dave Hansen wrote:
On 03/17/2014 12:49 PM, Jan Kara wrote:
+int get_vaddr_pfns(unsigned long start, int nr_pfns, int write, int force,
+ struct pinned_pfns *pfns)
+{
...
+ if (!(vma-vm_flags (VM_IO | VM_PFNMAP))) {
+ pfns-got_ref = 1
Convert the driver to use get_vaddr_pfns() instead of get_user_pages()
or a hand made page table walk. This removes knowledge about vmas
and mmap_sem locking from the driver.
Signed-off-by: Jan Kara j...@suse.cz
---
drivers/staging/tidspbridge/core/tiomap3430.c | 261
Convert vb2_vmalloc_get_userptr() to use passed vector of pfns. When we
are doing that there's no need to allocate page array and some code can
be simplified.
Signed-off-by: Jan Kara j...@suse.cz
---
drivers/media/v4l2-core/videobuf2-vmalloc.c | 86 +++--
1 file changed
to VM_IO | VM_PFNMAP vma, we don't touch page structures. Caller
should make sure pfns aren't reused for anything else while he is using
them.
This function is created for various drivers to simplify handling of
their buffers.
Signed-off-by: Jan Kara j...@suse.cz
---
include/linux/mm.h | 46
Hello,
The following patch series is my first stab at abstracting vma handling
from the various media drivers. After this patch set drivers have to know
much less details about vmas, their types, and locking. My motivation for
the series is that I want to change get_user_pages() locking and I
Conversion to the use of pinned pfns made some functions unused. Remove
them. Also there's no need to lock mmap_sem in __buf_prepare() anymore.
Signed-off-by: Jan Kara j...@suse.cz
---
drivers/media/v4l2-core/videobuf2-core.c | 8 +-
drivers/media/v4l2-core/videobuf2-memops.c | 114
-by: Jan Kara j...@suse.cz
---
drivers/media/platform/omap/omap_vout.c | 63 +++--
1 file changed, 29 insertions(+), 34 deletions(-)
diff --git a/drivers/media/platform/omap/omap_vout.c
b/drivers/media/platform/omap/omap_vout.c
index dfd0a21a0658..8c5803e4ce15 100644
Convert g2d_userptr_get_dma_addr() to pin pages using get_vaddr_pfn().
This removes the knowledge about vmas and mmap_sem locking from exynos
driver. Also it fixes a problem that the function has been mapping user
provided address without holding mmap_sem.
Signed-off-by: Jan Kara j...@suse.cz
Teach vb2_queue_or_prepare_buf() to get pfns underlying these buffers
and propagate them down to get_userptr callback. Thus each buffer
mapping method doesn't have to get pfns independently. Also this will
remove the knowledge about mmap_sem locking from videobuf2 core.
Signed-off-by: Jan Kara j
Signed-off-by: Jan Kara j...@suse.cz
---
drivers/media/v4l2-core/videobuf2-dma-sg.c | 85 ++
1 file changed, 15 insertions(+), 70 deletions(-)
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c
b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index ef0b3f765d8e
On Fri 18-10-13 14:59:17, Archit Taneja wrote:
Hi,
On Friday 18 October 2013 03:46 AM, Jan Kara wrote:
Hello,
I was auditing get_user_pages() users and I've noticed that
omap_vout_uservirt_to_phys() is apparently called for arbitrary address
passed from userspace. If this address
? Or for on which vmas this code is supposed to work? Thanks in
advance for clarification.
Honza
--
Jan Kara j...@suse.cz
SUSE Labs, CR
--
To unsubscribe from this list: send the line unsubscribe linux-media in
the body of a message to majord
this is a generally valid computation for arbitrary
VM_IO vma. So do we expect vma to come from a particular source where this
is true? If yes, where do we expect vma comes from? Thanks for
clarification.
Honza
--
Jan Kara j...@suse.cz
get_user_pages_unlocked(), then
the patch below looks fine.
Reviewed-by: Andy Walls awa...@md.metrocast.net
Acked-by: Andy Walls awa...@md.metrocast.net
Thanks.
Honza
On Wed, 2013-10-02 at 16:28 +0200, Jan Kara wrote:
CC: Andy Walls awa
CC: Laurent Pinchart laurent.pinch...@ideasonboard.com
CC: linux-media@vger.kernel.org
Signed-off-by: Jan Kara j...@suse.cz
---
drivers/media/platform/omap3isp/ispqueue.c | 10 +++---
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/omap3isp/ispqueue.c
b
CC: Andy Walls awa...@md.metrocast.net
CC: linux-media@vger.kernel.org
Signed-off-by: Jan Kara j...@suse.cz
---
drivers/media/pci/ivtv/ivtv-udma.c | 6 ++
drivers/media/pci/ivtv/ivtv-yuv.c | 12 ++--
2 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/media/pci
On Wed 02-10-13 21:41:10, Laurent Pinchart wrote:
Hi Jan,
Thank you for the patch.
On Wednesday 02 October 2013 16:27:46 Jan Kara wrote:
CC: Laurent Pinchart laurent.pinch...@ideasonboard.com
CC: linux-media@vger.kernel.org
Signed-off-by: Jan Kara j...@suse.cz
Acked-by: Laurent
Cc: Joel Becker jl...@evilplan.org
Cc: ocfs2-de...@oss.oracle.com
Cc: Jan Kara j...@suse.cz
Cc: linux-e...@vger.kernel.org
Cc: Andrew Morton a...@linux-foundation.org
Cc: Andreas Dilger adilger.ker...@dilger.ca
Cc: Theodore Ts'o ty...@mit.edu
Cc: Matthew Wilcox matt...@wil.cx
---
v2
On Mon 04-06-12 20:46:14, Akinobu Mita wrote:
2012/6/4 Jan Kara j...@suse.cz:
On Sat 02-06-12 22:40:07, Akinobu Mita wrote:
memweight() is the function that counts the total number of bits set
in memory area. Unlike bitmap_weight(), memweight() takes pointer
and size in bytes to specify
On Wed 23-05-12 21:12:18, Akinobu Mita wrote:
2012/5/23 Jan Kara j...@suse.cz:
On Sun 20-05-12 22:23:14, Akinobu Mita wrote:
memweight() is the function that counts the total number of bits set
in memory area. The memory area doesn't need to be aligned to
long-word boundary unlike
/staging if there are no users left.
I think some people still use this...
fs/udf:
Not completely trivial, but probably necessary to fix. Project web
site is dead, I hope that Jan Kara can be motivated to fix it though.
Yeah, I can have a look
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