Revision 129134e5415d46f38b9978b3809af94ed649b57d authored by Sergey Senozhatsky on 11 September 2020, 03:07:58 UTC, committed by Mauro Carvalho Chehab on 14 September 2020, 13:28:06 UTC
The patch partially reverts some of the UAPI bits of the buffer
cache management hints. Namely, the queue consistency (memory
coherency) user-space hint because, as it turned out, the kernel
implementation of this feature was misusing DMA_ATTR_NON_CONSISTENT.

The patch reverts both kernel and user space parts: removes the
DMA consistency attr functions, rolls back changes to v4l2_requestbuffers,
v4l2_create_buffers structures and corresponding UAPI functions
(plus compat32 layer) and cleans up the documentation.

[hverkuil: fixed a few typos in the commit log]
[hverkuil: fixed vb2_core_reqbufs call in drivers/media/dvb-core/dvb_vb2.c]
[mchehab: fixed a typo in the commit log: revers->reverts]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
1 parent 288eceb
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arch
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include
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ipc
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lib
mm
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samples
scripts
security
sound
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usr
virt
.clang-format -rw-r--r-- 15.8 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 1.8 KB
.mailmap -rw-r--r-- 16.9 KB
COPYING -rw-r--r-- 496 bytes
CREDITS -rw-r--r-- 97.4 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 555 bytes
MAINTAINERS -rw-r--r-- 555.8 KB
Makefile -rw-r--r-- 61.8 KB
README -rw-r--r-- 727 bytes

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