In existing implementation, driver is freeing and un-mapping all the
decoded picture buffers(DPB) as part of dynamic resolution change(DRC)
handling. As a result, when firmware try to access the DPB buffer, from
previous sequence, SMMU context fault is seen due to the buffer being
already unmapped.

With this change, driver defines ownership of each DPB buffer. If a buffer
is owned by firmware, driver would skip from un-mapping the same.

changes in V4:
- As per comments moved static global variable to venus_inst structure
- Addressed other review comments
Changes in V3:
- Migrated id allocation using kernel API ida_alloc_min()

Signed-off-by: Mansur Alisha Shaik <mansur@codeaurora.org>

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

These are only used in built-in core mm code.

Link: https://lkml.kernel.org/r/20210820095815.445392-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Patch series "unexport memcg locking helpers".

Neither the old page-based nor the new folio-based memcg locking helpers
are used in modular code at all, so drop the exports.

This patch (of 2):

folio_memcg_{,un}lock are only used in built-in core mm code.

Link: https://lkml.kernel.org/r/20210820095815.445392-1-hch@lst.de
Link: https://lkml.kernel.org/r/20210820095815.445392-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

… its mapping

Patch series "Some cleanup for page migration", v3.

This patchset does some cleanups and improvements for page migration.

This patch (of 4):

There is no need to validate the file-backed page's refcount before trying
to freeze the page's expected refcount, instead we can rely on the
folio_ref_freeze() to validate if the page has the expected refcount
before migrating its mapping.

Moreover we are always under the page lock when migrating the page
mapping, which means nowhere else can remove it from the page cache, so we
can remove the xas_load() validation under the i_pages lock.

Link: https://lkml.kernel.org/r/cover.1629447552.git.baolin.wang@linux.alibaba.com
Link: https://lkml.kernel.org/r/df4c129fd8e86a95dbc55f4663d77441cc0d3bd1.1629447552.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

…che.git

…cxl/cxl.git

…/shuah/linux-kselftest.git

# Conflicts:
#	tools/testing/kunit/kunit.py

…git/srini/nvmem.git

…/git/johan/gnss.git

…rnel/git/kees/linux.git

…/kernel/git/kees/linux.git

…rnel/git/brgl/linux.git

…ux/kernel/git/nvdimm/nvdimm.git

…git/abelloni/linux.git

…git/livepatching/livepatching

…git/ebiederm/user-namespace.git

…git/pinctrl/samsung.git

…kernel/git/geert/renesas-drivers.git

…git/pinctrl/intel.git

…git/linusw/linux-pinctrl.git

…rnel/git/brgl/linux.git

…git/remoteproc/linux.git

…l/git/mst/vhost.git

…git/jejb/scsi.git

…git/tj/cgroup.git

…git/djakov/icc.git

…t/jic23/iio.git

# Conflicts:
#	drivers/iio/adc/aspeed_adc.c