Граф коммитов

995966 Коммитов

Автор SHA1 Сообщение Дата
Matthew Wilcox (Oracle) a656a20241 mm: remove pagevec_lookup_entries
pagevec_lookup_entries() is now just a wrapper around find_get_entries()
so remove it and convert all its callers.

Link: https://lkml.kernel.org/r/20201112212641.27837-15-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) cf2039af1a mm: pass pvec directly to find_get_entries
All callers of find_get_entries() use a pvec, so pass it directly instead
of manipulating it in the caller.

Link: https://lkml.kernel.org/r/20201112212641.27837-14-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 38cefeb337 mm: remove nr_entries parameter from pagevec_lookup_entries
All callers want to fetch the full size of the pvec.

Link: https://lkml.kernel.org/r/20201112212641.27837-13-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 31d270fd98 mm: add an 'end' parameter to pagevec_lookup_entries
Simplifies the callers and uses the existing functionality in
find_get_entries().  We can also drop the final argument of
truncate_exceptional_pvec_entries() and simplify the logic in that
function.

Link: https://lkml.kernel.org/r/20201112212641.27837-12-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) ca122fe40e mm: add an 'end' parameter to find_get_entries
This simplifies the callers and leads to a more efficient implementation
since the XArray has this functionality already.

Link: https://lkml.kernel.org/r/20201112212641.27837-11-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 5c211ba29d mm: add and use find_lock_entries
We have three functions (shmem_undo_range(), truncate_inode_pages_range()
and invalidate_mapping_pages()) which want exactly this function, so add
it to filemap.c.  Before this patch, shmem_undo_range() would split any
compound page which overlaps either end of the range being punched in both
the first and second loops through the address space.  After this patch,
that functionality is left for the second loop, which is arguably more
appropriate since the first loop is supposed to run through all the pages
quickly, and splitting a page can sleep.

[willy@infradead.org: add assertion]
  Link: https://lkml.kernel.org/r/20201124041507.28996-3-willy@infradead.org

Link: https://lkml.kernel.org/r/20201112212641.27837-10-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 54fa39ac2e iomap: use mapping_seek_hole_data
Enhance mapping_seek_hole_data() to handle partially uptodate pages and
convert the iomap seek code to call it.

Link: https://lkml.kernel.org/r/20201112212641.27837-9-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 41139aa4c3 mm/filemap: add mapping_seek_hole_data
Rewrite shmem_seek_hole_data() and move it to filemap.c.

[willy@infradead.org: don't put an xa_is_value() page]
  Link: https://lkml.kernel.org/r/20201124041507.28996-4-willy@infradead.org

Link: https://lkml.kernel.org/r/20201112212641.27837-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) c7bad633e6 mm/filemap: add helper for finding pages
There is a lot of common code in find_get_entries(),
find_get_pages_range() and find_get_pages_range_tag().  Factor out
find_get_entry() which simplifies all three functions.

[willy@infradead.org: remove VM_BUG_ON_PAGE()]
  Link: https://lkml.kernel.org/r/20201124041507.28996-2-willy@infradead.orgLink: https://lkml.kernel.org/r/20201112212641.27837-7-willy@infradead.org

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) bc5a301120 mm/filemap: rename find_get_entry to mapping_get_entry
find_get_entry doesn't "find" anything.  It returns the entry at a
particular index.

Link: https://lkml.kernel.org/r/20201112212641.27837-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 44835d20b2 mm: add FGP_ENTRY
The functionality of find_lock_entry() and find_get_entry() can be
provided by pagecache_get_page(), which lets us delete find_lock_entry()
and make find_get_entry() static.

Link: https://lkml.kernel.org/r/20201112212641.27837-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 8c647dd1e3 mm/swap: optimise get_shadow_from_swap_cache
There's no need to get a reference to the page, just load the entry and
see if it's a shadow entry.

Link: https://lkml.kernel.org/r/20201112212641.27837-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) 96888e0ab0 mm/shmem: use pagevec_lookup in shmem_unlock_mapping
The comment shows that the reason for using find_get_entries() is now
stale; find_get_pages() will not return 0 if it hits a consecutive run of
swap entries, and I don't believe it has since 2011.  pagevec_lookup() is
a simpler function to use than find_get_pages(), so use it instead.

Link: https://lkml.kernel.org/r/20201112212641.27837-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:59 -08:00
Matthew Wilcox (Oracle) c49f50d198 mm: make pagecache tagged lookups return only head pages
Patch series "Overhaul multi-page lookups for THP", v4.

This THP prep patchset changes several page cache iteration APIs to only
return head pages.

 - It's only possible to tag head pages in the page cache, so only
   return head pages, not all their subpages.
 - Factor a lot of common code out of the various batch lookup routines
 - Add mapping_seek_hole_data()
 - Unify find_get_entries() and pagevec_lookup_entries()
 - Make find_get_entries only return head pages, like find_get_entry().

These are only loosely connected, but they seem to make sense together as
a series.

This patch (of 14):

Pagecache tags are used for dirty page writeback.  Since dirtiness is
tracked on a per-THP basis, we only want to return the head page rather
than each subpage of a tagged page.  All the filesystems which use huge
pages today are in-memory, so there are no tagged huge pages today.

Link: https://lkml.kernel.org/r/20201112212641.27837-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:40:58 -08:00
Linus Torvalds 1c9077cdec NFS Client Updates for Linux 5.12
- New Features:
   - Support for eager writes, and the write=eager and write=wait mount options
 
 - Other Bugfixes and Cleanups:
   - Fix typos in some comments
   - Fix up fall-through warnings for Clang
   - Cleanups to the NFS readpage codepath
   - Remove FMR support in rpcrdma_convert_iovs()
   - Various other cleanups to xprtrdma
   - Fix xprtrdma pad optimization for servers that don't support RFC 8797
   - Improvements to rpcrdma tracepoints
   - Fix up nfs4_bitmask_adjust()
   - Optimize sparse writes past the end of files
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Merge tag 'nfs-for-5.12-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS Client Updates from Anna Schumaker:
 "New Features:
   - Support for eager writes, and the write=eager and write=wait mount
     options

- Other Bugfixes and Cleanups:
   - Fix typos in some comments
   - Fix up fall-through warnings for Clang
   - Cleanups to the NFS readpage codepath
   - Remove FMR support in rpcrdma_convert_iovs()
   - Various other cleanups to xprtrdma
   - Fix xprtrdma pad optimization for servers that don't support
     RFC 8797
   - Improvements to rpcrdma tracepoints
   - Fix up nfs4_bitmask_adjust()
   - Optimize sparse writes past the end of files"

* tag 'nfs-for-5.12-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (27 commits)
  NFS: Support the '-owrite=' option in /proc/self/mounts and mountinfo
  NFS: Set the stable writes flag when initialising the super block
  NFS: Add mount options supporting eager writes
  NFS: Add support for eager writes
  NFS: 'flags' field should be unsigned in struct nfs_server
  NFS: Don't set NFS_INO_INVALID_XATTR if there is no xattr cache
  NFS: Always clear an invalid mapping when attempting a buffered write
  NFS: Optimise sparse writes past the end of file
  NFS: Fix documenting comment for nfs_revalidate_file_size()
  NFSv4: Fixes for nfs4_bitmask_adjust()
  xprtrdma: Clean up rpcrdma_prepare_readch()
  rpcrdma: Capture bytes received in Receive completion tracepoints
  xprtrdma: Pad optimization, revisited
  rpcrdma: Fix comments about reverse-direction operation
  xprtrdma: Refactor invocations of offset_in_page()
  xprtrdma: Simplify rpcrdma_convert_kvec() and frwr_map()
  xprtrdma: Remove FMR support in rpcrdma_convert_iovs()
  NFS: Add nfs_pageio_complete_read() and remove nfs_readpage_async()
  NFS: Call readpage_async_filler() from nfs_readpage_async()
  NFS: Refactor nfs_readpage() and nfs_readpage_async() to use nfs_readdesc
  ...
2021-02-26 09:17:24 -08:00
Martin Radev daf9514fd5 swiotlb: Validate bounce size in the sync/unmap path
The size of the buffer being bounced is not checked if it happens
to be larger than the size of the mapped buffer. Because the size
can be controlled by a device, as it's the case with virtio devices,
this can lead to memory corruption.

This patch saves the remaining buffer memory for each slab and uses
that information for validation in the sync/unmap paths before
swiotlb_bounce is called.

Validating this argument is important under the threat models of
AMD SEV-SNP and Intel TDX, where the HV is considered untrusted.

Signed-off-by: Martin Radev <martin.b.radev@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2021-02-26 10:52:51 -05:00
Jianxiong Gao 3d2d861eb0 nvme-pci: set min_align_mask
The PRP addressing scheme requires all PRP entries except for the
first one to have a zero offset into the NVMe controller pages (which
can be different from the Linux PAGE_SIZE).  Use the min_align_mask
device parameter to ensure that swiotlb does not change the address
of the buffer modulo the device page size to ensure that the PRPs
won't be malformed.

Signed-off-by: Jianxiong Gao <jxgao@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jianxiong Gao <jxgao@google.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2021-02-26 10:52:50 -05:00
Christoph Hellwig 1f221a0d0d swiotlb: respect min_align_mask
Respect the min_align_mask in struct device_dma_parameters in swiotlb.

There are two parts to it:
 1) for the lower bits of the alignment inside the io tlb slot, just
    extent the size of the allocation and leave the start of the slot
     empty
 2) for the high bits ensure we find a slot that matches the high bits
    of the alignment to avoid wasting too much memory

Based on an earlier patch from Jianxiong Gao <jxgao@google.com>.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jianxiong Gao <jxgao@google.com>
Tested-by: Jianxiong Gao <jxgao@google.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2021-02-26 10:52:44 -05:00
Mårten Lindahl f4ff0104d4 i2c: exynos5: Preserve high speed master code
When the driver starts to send a message with the MASTER_ID field
set (high speed), the whole I2C_ADDR register is overwritten including
MASTER_ID as the SLV_ADDR_MAS field is set.

This patch preserves already written fields in I2C_ADDR when writing
SLV_ADDR_MAS.

Fixes: 8a73cd4cfa ("i2c: exynos5: add High Speed I2C controller driver")
Signed-off-by: Mårten Lindahl <martenli@axis.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-02-26 11:47:42 +01:00
Wolfram Sang e87cc183cb Revert "i2c: i2c-qcom-geni: Add shutdown callback for i2c"
This reverts commit e0371298dd. It was
accidently applied despite discussion still going on.

Signed-off-by: Wolfram Sang <wsa@kernel.org>
Acked-by: Stephen Boyd <swboyd@chromium.org>
2021-02-26 11:32:15 +01:00
Liguang Zhang f53f15ba5a i2c: designware: Get right data length
IC_DATA_CMD[11] indicates the first data byte received after the address
phase for receive transfer in Master receiver or Slave receiver mode,
this bit was set in some transfer flow. IC_DATA_CMD[7:0] contains the
data to be transmitted or received on the I2C bus, so we should use the
lower 8 bits to get the real data length.

Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-02-26 11:26:09 +01:00
Maxime Ripard a1858ce0cf i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition
The brcmstb_send_i2c_cmd currently has a condition that is (CMD_RD ||
CMD_WR) which always evaluates to true, while the obvious fix is to test
whether the cmd variable passed as parameter holds one of these two
values.

Fixes: dd1aa2524b ("i2c: brcmstb: Add Broadcom settop SoC i2c controller driver")
Reported-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-02-26 11:25:24 +01:00
Steve French 8369dfd784 cifs: update internal version number
To 2.31

Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 19:08:11 -06:00
David Howells cf0604a686 cifs: use discard iterator to discard unneeded network data more efficiently
The iterator, ITER_DISCARD, that can only be used in READ mode and
just discards any data copied to it, was added to allow a network
filesystem to discard any unwanted data sent by a server.
Convert cifs_discard_from_socket() to use this.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 19:08:06 -06:00
Nathan Chancellor f5b6a74d9c vmlinux.lds.h: Define SANTIZER_DISCARDS with CONFIG_GCOV_KERNEL=y
clang produces .eh_frame sections when CONFIG_GCOV_KERNEL is enabled,
even when -fno-asynchronous-unwind-tables is in KBUILD_CFLAGS:

$ make CC=clang vmlinux
...
ld: warning: orphan section `.eh_frame' from `init/main.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/version.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/do_mounts.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/do_mounts_initrd.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/initramfs.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/calibrate.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/init_task.o' being placed in section `.eh_frame'
...

$ rg "GCOV_KERNEL|GCOV_PROFILE_ALL" .config
CONFIG_GCOV_KERNEL=y
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_GCOV_PROFILE_ALL=y

This was already handled for a couple of other options in
commit d812db7828 ("vmlinux.lds.h: Avoid KASAN and KCSAN's unwanted
sections") and there is an open LLVM bug for this issue. Take advantage
of that section for this config as well so that there are no more orphan
warnings.

Link: https://bugs.llvm.org/show_bug.cgi?id=46478
Link: https://github.com/ClangBuiltLinux/linux/issues/1069
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Fixes: d812db7828 ("vmlinux.lds.h: Avoid KASAN and KCSAN's unwanted sections")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210130004650.2682422-1-nathan@kernel.org
2021-02-25 13:15:25 -08:00
Linus Torvalds 2c87f7a38f pwm: Changes for v5.12-rc1
The ZTE ZX platform is being removed, so the PWM driver is no longer
 needed and removed as well. Other than that this contains a small set of
 fixes and cleanups across a couple of drivers.
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Merge tag 'pwm/for-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "The ZTE ZX platform is being removed, so the PWM driver is no longer
  needed and removed as well.

  Other than that this contains a small set of fixes and cleanups across
  a couple of drivers"

* tag 'pwm/for-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: lpc18xx-sct: remove unneeded semicolon
  pwm: iqs620a: Correct a stale state variable
  pwm: iqs620a: Fix overflow and optimize calculations
  pwm: rockchip: Enable clock before calling clk_get_rate()
  pwm: rockchip: Eliminate potential race condition when probing
  pwm: rockchip: Replace "bus clk" with "PWM clk"
  pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()
  pwm: rockchip: Enable APB clock during register access while probing
  pwm: Remove ZTE ZX driver
2021-02-25 12:23:49 -08:00
Linus Torvalds ffc1759676 virtio: features, fixes
new vdpa features to allow creation and deletion of new devices
 virtio-blk support per-device queue depth
 fixes, cleanups all over the place
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - new vdpa features to allow creation and deletion of new devices

 - virtio-blk support per-device queue depth

 - fixes, cleanups all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (31 commits)
  virtio-input: add multi-touch support
  virtio_mmio: fix one typo
  vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()
  virtio_net: Fix fall-through warnings for Clang
  virtio_input: Prevent EV_MSC/MSC_TIMESTAMP loop storm for MT.
  virtio-blk: support per-device queue depth
  virtio_vdpa: don't warn when fail to disable vq
  virtio-pci: introduce modern device module
  virito-pci-modern: rename map_capability() to vp_modern_map_capability()
  virtio-pci-modern: introduce helper to get notification offset
  virtio-pci-modern: introduce helper for getting queue nums
  virtio-pci-modern: introduce helper for setting/geting queue size
  virtio-pci-modern: introduce helper to set/get queue_enable
  virtio-pci-modern: introduce vp_modern_queue_address()
  virtio-pci-modern: introduce vp_modern_set_queue_vector()
  virtio-pci-modern: introduce vp_modern_generation()
  virtio-pci-modern: introduce helpers for setting and getting features
  virtio-pci-modern: introduce helpers for setting and getting status
  virtio-pci-modern: introduce helper to set config vector
  virtio-pci-modern: introduce vp_modern_remove()
  ...
2021-02-25 12:21:08 -08:00
Masahiro Yamada 4c7858b900 kbuild: Move .thinlto-cache removal to 'make clean'
Instead of 'make distclean', 'make clean' should remove build artifacts
unneeded by external module builds. Obviously, you do not need to keep
this directory.

Fixes: dc5723b02e ("kbuild: add support for Clang LTO")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210225193912.3303604-1-masahiroy@kernel.org
2021-02-25 12:21:06 -08:00
Sami Tolvanen 3d1dc719bc parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
to tell that to the build system.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 3b15cdc159 ("tracing: move function tracer options to Kconfig")
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210224225706.2726050-1-samitolvanen@google.com
2021-02-25 12:20:51 -08:00
Linus Torvalds a6525b9999 - added n64 block driver
- fix for ubsan warnings
 - fix for bcm63xx platform
 - update of linux-mips mailinglist
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Merge tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull more MIPS updates from Thomas Bogendoerfer:

 - added n64 block driver

 - fix for ubsan warnings

 - fix for bcm63xx platform

 - update of linux-mips mailinglist

* tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  arch: mips: update references to current linux-mips list
  mips: bmips: init clocks earlier
  vmlinux.lds.h: catch even more instrumentation symbols into .data
  n64: store dev instance into disk private data
  n64: cleanup n64cart_probe()
  n64: cosmetics changes
  n64: remove curly brackets
  n64: use sector SECTOR_SHIFT instead 512
  n64: use enums for reg
  n64: move module param at the top
  n64: move module info at the end
  n64: use pr_fmt to avoid duplicate string
  block: Add n64 cart driver
2021-02-25 12:18:21 -08:00
Randy Dunlap f37a15ea8d docs: proc.rst: fix indentation warning
Fix indentation snafu in proc.rst as reported by Stephen.

next-20210219/Documentation/filesystems/proc.rst:697: WARNING: Unexpected indentation.

Fixes: 93ea4a0b8f ("Documentation: proc.rst: add more about the 6 fields in loadavg")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20210223060418.21443-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-02-25 13:11:00 -07:00
Linus Torvalds fdce29602f drm fixes for 5.12-rc1 + msm-next
core:
 - vblank fence timing improvements
 
 dma-buf:
 - improve error handling
 
 ttm:
 - memory leak fix
 
 msm:
 - a6xx speedbin support
 - a508, a509, a512 support
 - various a5xx fixes
 - various dpu fixes
 - qseed3lite support for sm8250
 - dsi fix for msm8994
 - mdp5 fix for framerate bug with cmd mode panels
 - a6xx GMU OOB race fixes that were showing up in CI
 - various addition and removal of semicolons
 - gem submit fix for legacy userspace relocs path
 
 amdgpu:
 - Clang warning fix
 - S0ix platform shutdown/poweroff fix
 - Misc display fixes
 
 i915:
 - color format fix
 - -Wuninitialised reenabled
 - GVT ww locking, cmd parser fixes
 
 atyfb:
 - fix build
 
 rockchip:
 - AFBC modifier fix
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Merge tag 'drm-next-2021-02-26' of git://anongit.freedesktop.org/drm/drm

Pull more drm updates from Dave Airlie:
 "This is mostly fixes but I missed msm-next pull last week. It's been
  in drm-next.

  Otherwise it's a selection of i915, amdgpu and misc fixes, one TTM
  memory leak, nothing really major stands out otherwise.

  core:
   - vblank fence timing improvements

  dma-buf:
   - improve error handling

  ttm:
   - memory leak fix

  msm:
   - a6xx speedbin support
   - a508, a509, a512 support
   - various a5xx fixes
   - various dpu fixes
   - qseed3lite support for sm8250
   - dsi fix for msm8994
   - mdp5 fix for framerate bug with cmd mode panels
   - a6xx GMU OOB race fixes that were showing up in CI
   - various addition and removal of semicolons
   - gem submit fix for legacy userspace relocs path

  amdgpu:
   - clang warning fix
   - S0ix platform shutdown/poweroff fix
   - misc display fixes

  i915:
   - color format fix
   - -Wuninitialised reenabled
   - GVT ww locking, cmd parser fixes

  atyfb:
   - fix build

  rockchip:
   - AFBC modifier fix"

* tag 'drm-next-2021-02-26' of git://anongit.freedesktop.org/drm/drm: (60 commits)
  drm/panel: kd35t133: allow using non-continuous dsi clock
  drm/rockchip: Require the YTR modifier for AFBC
  drm/ttm: Fix a memory leak
  drm/drm_vblank: set the dma-fence timestamp during send_vblank_event
  dma-fence: allow signaling drivers to set fence timestamp
  dma-buf: heaps: Rework heap allocation hooks to return struct dma_buf instead of fd
  dma-buf: system_heap: Make sure to return an error if we abort
  drm/amd/display: Fix system hang after multiple hotplugs (v3)
  drm/amdgpu: fix shutdown and poweroff process failed with s0ix
  drm/i915: Nuke INTEL_OUTPUT_FORMAT_INVALID
  drm/i915: Enable -Wuninitialized
  drm/amd/display: Remove Assert from dcn10_get_dig_frontend
  drm/amd/display: Add vupdate_no_lock interrupts for DCN2.1
  Revert "drm/amd/display: reuse current context instead of recreating one"
  drm/amd/pm/swsmu: Avoid using structure_size uninitialized in smu_cmn_init_soft_gpu_metrics
  fbdev: atyfb: add stubs for aty_{ld,st}_lcd()
  drm/i915/gvt: Introduce per object locking in GVT scheduler.
  drm/i915/gvt: Purge dev_priv->gt
  drm/i915/gvt: Parse default state to update reg whitelist
  dt-bindings: dp-connector: Drop maxItems from -supply
  ...
2021-02-25 12:10:22 -08:00
Antonio Terceiro 43c4f657c8 Documentation: cgroup-v2: fix path to example BPF program
This file has been moved into the "progs" subdirectory, together with all
test BPF programs.

Fixes: bd4aed0ee7 ("selftests: bpf: centre kernel bpf objects under new subdir "progs"")
Signed-off-by: Antonio Terceiro <antonio.terceiro@linaro.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jiong Wang <jiong.wang@netronome.com>
Link: https://lore.kernel.org/r/20210224131631.349287-1-antonio.terceiro@linaro.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-02-25 13:07:31 -07:00
Linus Torvalds 5ad3dbab56 Networking fixes for 5.12-rc1. Rather small batch this time.
Current release - regressions:
 
  - bcm63xx_enet: fix sporadic kernel panic due to queue length
                  mis-accounting
 
 Current release - new code bugs:
 
  - bcm4908_enet: fix RX path possible mem leak
 
  - bcm4908_enet: fix NAPI poll returned value
 
  - stmmac: fix missing spin_lock_init in visconti_eth_dwmac_probe()
 
  - sched: cls_flower: validate ct_state for invalid and reply flags
 
 Previous releases - regressions:
 
  - net: introduce CAN specific pointer in the struct net_device to
         prevent mis-interpreting memory
 
  - phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
 
  - psample: fix netlink skb length with tunnel info
 
 Previous releases - always broken:
 
  - icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
 
  - wireguard: device: do not generate ICMP for non-IP packets
 
  - mptcp: provide subflow aware release function to avoid a mem leak
 
  - hsr: add support for EntryForgetTime
 
  - r8169: fix jumbo packet handling on RTL8168e
 
  - octeontx2-af: fix an off by one in rvu_dbg_qsize_write()
 
  - i40e: fix flow for IPv6 next header (extension header)
 
  - phy: icplus: call phy_restore_page() when phy_select_page() fails
 
  - dpaa_eth: fix the access method for the dpaa_napi_portal
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Rather small batch this time.

  Current release - regressions:

   - bcm63xx_enet: fix sporadic kernel panic due to queue length
     mis-accounting

  Current release - new code bugs:

   - bcm4908_enet: fix RX path possible mem leak

   - bcm4908_enet: fix NAPI poll returned value

   - stmmac: fix missing spin_lock_init in visconti_eth_dwmac_probe()

   - sched: cls_flower: validate ct_state for invalid and reply flags

  Previous releases - regressions:

   - net: introduce CAN specific pointer in the struct net_device to
     prevent mis-interpreting memory

   - phy: micrel: set soft_reset callback to genphy_soft_reset for
     KSZ8081

   - psample: fix netlink skb length with tunnel info

  Previous releases - always broken:

   - icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending

   - wireguard: device: do not generate ICMP for non-IP packets

   - mptcp: provide subflow aware release function to avoid a mem leak

   - hsr: add support for EntryForgetTime

   - r8169: fix jumbo packet handling on RTL8168e

   - octeontx2-af: fix an off by one in rvu_dbg_qsize_write()

   - i40e: fix flow for IPv6 next header (extension header)

   - phy: icplus: call phy_restore_page() when phy_select_page() fails

   - dpaa_eth: fix the access method for the dpaa_napi_portal"

* tag 'net-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
  r8169: fix jumbo packet handling on RTL8168e
  net: phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
  net: psample: Fix netlink skb length with tunnel info
  net: broadcom: bcm4908_enet: fix NAPI poll returned value
  net: broadcom: bcm4908_enet: fix RX path possible mem leak
  net: hsr: add support for EntryForgetTime
  net: dsa: sja1105: Remove unneeded cast in sja1105_crc32()
  ibmvnic: fix a race between open and reset
  net: stmmac: Fix missing spin_lock_init in visconti_eth_dwmac_probe()
  net: introduce CAN specific pointer in the struct net_device
  net: usb: qmi_wwan: support ZTE P685M modem
  wireguard: kconfig: use arm chacha even with no neon
  wireguard: queueing: get rid of per-peer ring buffers
  wireguard: device: do not generate ICMP for non-IP packets
  wireguard: peer: put frequently used members above cache lines
  wireguard: selftests: test multiple parallel streams
  wireguard: socket: remove bogus __be32 annotation
  wireguard: avoid double unlikely() notation when using IS_ERR()
  net: qrtr: Fix memory leak in qrtr_tun_open
  vxlan: move debug check after netdev unregister
  ...
2021-02-25 12:06:25 -08:00
Andrew Donnellan 36eaf08fc2 docs: powerpc: Fix tables in syscall64-abi.rst
Commit 209b44c804 ("docs: powerpc: syscall64-abi.rst: fix a malformed
table") attempted to fix the formatting of tables in syscall64-abi.rst, but
inadvertently changed some register names.

Redo the tables with the correct register names, and while we're here,
clean things up to separate the registers into different rows and add
headings.

Fixes: 209b44c804 ("docs: powerpc: syscall64-abi.rst: fix a malformed table")
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Link: https://lore.kernel.org/r/20210225060857.16083-1-ajd@linux.ibm.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-02-25 13:04:24 -07:00
Linus Torvalds 268f77b525 Additional ACPI updates for v5.12-rc1
- Rearrange Kconfig handling of ACPI_PLATFORM_PROFILE, add
    "balanced-performance" to the list of supported platform profiles
    and fix up some file references in a comment (Maximilian Luz).
 
  - Add support for parsing the ACPI Firmware Performance Data Table
    (FPDT) and exposing the data from there via sysfs (Zhang Rui).
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Merge tag 'acpi-5.12-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI updates from Rafael Wysocki:
 "These make additional changes to the platform profile interface merged
  recently and add support for the FPDT ACPI table.

  Specifics:

   - Rearrange Kconfig handling of ACPI_PLATFORM_PROFILE, add
     "balanced-performance" to the list of supported platform profiles
     and fix up some file references in a comment (Maximilian Luz).

   - Add support for parsing the ACPI Firmware Performance Data Table
     (FPDT) and exposing the data from there via sysfs (Zhang Rui)"

* tag 'acpi-5.12-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: platform: Add balanced-performance platform profile
  ACPI: platform: Fix file references in comment
  ACPI: platform: Hide ACPI_PLATFORM_PROFILE option
  ACPI: tables: introduce support for FPDT table
2021-02-25 12:03:13 -08:00
Dave Airlie d153e8c156 A fix for color format check from Ville, plus the re-enable of -Wuninitialized
from Nathan, and the GVT fixes including fixes for ww locking, cmd parser and
 a general cleanup of dev_priv->gt.
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Merge tag 'drm-intel-next-fixes-2021-02-25' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

A fix for color format check from Ville, plus the re-enable of -Wuninitialized
from Nathan, and the GVT fixes including fixes for ww locking, cmd parser and
a general cleanup of dev_priv->gt.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YDe3pBPV5Kx3hpk6@intel.com
2021-02-26 05:08:51 +10:00
Dave Airlie 9c712c9c38 Merge tag 'amd-drm-fixes-5.12-2021-02-24' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-fixes-5.12-2021-02-24:

amdgpu:
- Clang warning fix
- S0ix platform shutdown/poweroff fix
- Misc display fixes

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210225043853.3880-1-alexander.deucher@amd.com
2021-02-26 05:05:40 +10:00
Dave Airlie e81df5bc92 drm-misc-next tasty fixes for v5.12:
- Cherry pick of drm-misc-fixes pull:
 "here's this week's PR for drm-misc-fixes. One of the patches is a memory
 leak; the rest is for hardware issues."
 - Fix dt bindings for dp connector.
 - Fix build error in atyfb.
 - Improve error handling for dma-buf heaps.
 - Make vblank timestamp more correct, by recording timestamp to be set when signaling.
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Merge tag 'drm-misc-next-fixes-2021-02-25' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next tasty fixes for v5.12:
- Cherry pick of drm-misc-fixes pull:
"here's this week's PR for drm-misc-fixes. One of the patches is a memory
leak; the rest is for hardware issues."
- Fix dt bindings for dp connector.
- Fix build error in atyfb.
- Improve error handling for dma-buf heaps.
- Make vblank timestamp more correct, by recording timestamp to be set when signaling.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0f60a68c-d562-7266-0815-ea75ff680b17@linux.intel.com
2021-02-26 04:43:00 +10:00
Arnd Bergmann a910f43efd Documentation: features: refresh feature list
Run the update script to document the recent feature additions
on riscv, mips and csky.

Fixes: c109f42450 ("csky: Add kmemleak support")
Fixes: 8b3165e545 ("MIPS: Enable GCOV")
Fixes: 1ddc96bd42 ("MIPS: kernel: Support extracting off-line stack traces from user-space with perf")
Fixes: 74784081aa ("riscv: Add uprobes supported")
Fixes: 829adda597 ("riscv: Add KPROBES_ON_FTRACE supported")
Fixes: c22b0bcb1d ("riscv: Add kprobes supported")
Fixes: dcdc7a53a8 ("RISC-V: Implement ptrace regs and stack API")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210225142841.3385428-2-arnd@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-02-25 11:25:57 -07:00
Arnd Bergmann 4f3c8320c7 Documentation: features: remove c6x references
The references to arch/c6x are obsolete now that the architecture
is gone. Remove them.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210225142841.3385428-1-arnd@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-02-25 11:25:57 -07:00
Paulo Alcantara 5ff2836ed3 cifs: introduce helper for finding referral server to improve DFS target resolution
Some servers seem to mistakenly report different values for
capabilities and share flags, so we can't always rely on those values
to decide whether the resolved target can handle any new DFS
referrals.

Add a new helper is_referral_server() to check if all resolved targets
can handle new DFS referrals by directly looking at the
GET_DFS_REFERRAL.ReferralHeaderFlags value as specified in MS-DFSC
2.2.4 RESP_GET_DFS_REFERRAL in addition to is_tcon_dfs().

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: stable@vger.kernel.org # 5.11
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 12:19:15 -06:00
Paulo Alcantara ff2c54a040 cifs: check all path components in resolved dfs target
Handle the case where a resolved target share is like
//server/users/dir, and the user "foo" has no read permission to
access the parent folder "users" but has access to the final path
component "dir".

is_path_remote() already implements that, so call it directly.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: stable@vger.kernel.org # 5.11
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 12:18:22 -06:00
Linus Torvalds 6fbd6cf85a Kbuild updates for v5.12
- Fix false-positive build warnings for ARCH=ia64 builds
 
  - Optimize dictionary size for module compression with xz
 
  - Check the compiler and linker versions in Kconfig
 
  - Fix misuse of extra-y
 
  - Support DWARF v5 debug info
 
  - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x
    exceeded the limit
 
  - Add generic syscall{tbl,hdr}.sh for cleanups across arches
 
  - Minor cleanups of genksyms
 
  - Minor cleanups of Kconfig
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Merge tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Fix false-positive build warnings for ARCH=ia64 builds

 - Optimize dictionary size for module compression with xz

 - Check the compiler and linker versions in Kconfig

 - Fix misuse of extra-y

 - Support DWARF v5 debug info

 - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x
   exceeded the limit

 - Add generic syscall{tbl,hdr}.sh for cleanups across arches

 - Minor cleanups of genksyms

 - Minor cleanups of Kconfig

* tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (38 commits)
  initramfs: Remove redundant dependency of RD_ZSTD on BLK_DEV_INITRD
  kbuild: remove deprecated 'always' and 'hostprogs-y/m'
  kbuild: parse C= and M= before changing the working directory
  kbuild: reuse this-makefile to define abs_srctree
  kconfig: unify rule of config, menuconfig, nconfig, gconfig, xconfig
  kconfig: omit --oldaskconfig option for 'make config'
  kconfig: fix 'invalid option' for help option
  kconfig: remove dead code in conf_askvalue()
  kconfig: clean up nested if-conditionals in check_conf()
  kconfig: Remove duplicate call to sym_get_string_value()
  Makefile: Remove # characters from compiler string
  Makefile: reuse CC_VERSION_TEXT
  kbuild: check the minimum linker version in Kconfig
  kbuild: remove ld-version macro
  scripts: add generic syscallhdr.sh
  scripts: add generic syscalltbl.sh
  arch: syscalls: remove $(srctree)/ prefix from syscall tables
  arch: syscalls: add missing FORCE and fix 'targets' to make if_changed work
  gen_compile_commands: prune some directories
  kbuild: simplify access to the kernel's version
  ...
2021-02-25 10:17:31 -08:00
Paulo Alcantara 8513222b9e cifs: fix DFS failover
In do_dfs_failover(), the mount_get_conns() function requires the full
fs context in order to get new connection to server, so clone the
original context and change it accordingly when retrying the DFS
targets in the referral.

If failover was successful, then update original context with the new
UNC, prefix path and ip address.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: stable@vger.kernel.org # 5.11
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 12:14:17 -06:00
Paulo Alcantara d01132ae50 cifs: fix nodfs mount option
Skip DFS resolving when mounting with 'nodfs' even if
CONFIG_CIFS_DFS_UPCALL is enabled.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: stable@vger.kernel.org # 5.11
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 12:13:59 -06:00
Ronnie Sahlberg d08395a3f2 cifs: fix handling of escaped ',' in the password mount argument
Passwords can contain ',' which are also used as the separator between
mount options. Mount.cifs will escape all ',' characters as the string ",,".
Update parsing of the mount options to detect ",," and treat it as a single
'c' character.

Fixes: 24e0a1eff9 ("cifs: switch to new mount api")
Cc: stable@vger.kernel.org # 5.11
Reported-by: Simon Taylor <simon@simon-taylor.me.uk>
Tested-by: Simon Taylor <simon@simon-taylor.me.uk>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-02-25 12:13:13 -06:00
Linus Torvalds 6f9972bbfe Miscellaneous ext4 cleanups and bug fixes. Pretty boring this
cycle...
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Miscellaneous ext4 cleanups and bug fixes. Pretty boring this cycle..."

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: add .kunitconfig fragment to enable ext4-specific tests
  ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it
  ext4: reset retry counter when ext4_alloc_file_blocks() makes progress
  ext4: fix potential htree index checksum corruption
  ext4: factor out htree rep invariant check
  ext4: Change list_for_each* to list_for_each_entry*
  ext4: don't try to processed freed blocks until mballoc is initialized
  ext4: use DEFINE_MUTEX() for mutex lock
2021-02-25 10:06:55 -08:00
Rafael J. Wysocki b11ffaeacd Merge branch 'acpi-tables'
* acpi-tables:
  ACPI: tables: introduce support for FPDT table
2021-02-25 18:57:40 +01:00
Linus Torvalds 5b47b10e8f pci-v5.12-changes
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Merge tag 'pci-v5.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:
   - Remove unnecessary locking around _OSC (Bjorn Helgaas)
   - Clarify message about _OSC failure (Bjorn Helgaas)
   - Remove notification of PCIe bandwidth changes (Bjorn Helgaas)
   - Tidy checking of syscall user config accessors (Heiner Kallweit)

  Resource management:
   - Decline to resize resources if boot config must be preserved (Ard
     Biesheuvel)
   - Fix pci_register_io_range() memory leak (Geert Uytterhoeven)

  Error handling (Keith Busch):
   - Clear error status from the correct device
   - Retain error recovery status so drivers can use it after reset
   - Log the type of Port (Root or Switch Downstream) that we reset
   - Always request a reset for Downstream Ports in frozen state

  Endpoint framework and NTB (Kishon Vijay Abraham I):
   - Make *_get_first_free_bar() take into account 64 bit BAR
   - Add helper API to get the 'next' unreserved BAR
   - Make *_free_bar() return error codes on failure
   - Remove unused pci_epf_match_device()
   - Add support to associate secondary EPC with EPF
   - Add support in configfs to associate two EPCs with EPF
   - Add pci_epc_ops to map MSI IRQ
   - Add pci_epf_ops to expose function-specific attrs
   - Allow user to create sub-directory of 'EPF Device' directory
   - Implement ->msi_map_irq() ops for cadence
   - Configure LM_EP_FUNC_CFG based on epc->function_num_map for cadence
   - Add EP function driver to provide NTB functionality
   - Add support for EPF PCI Non-Transparent Bridge
   - Add specification for PCI NTB function device
   - Add PCI endpoint NTB function user guide
   - Add configfs binding documentation for pci-ntb endpoint function

  Broadcom STB PCIe controller driver:
   - Add support for BCM4908 and external PERST# signal controller
     (Rafał Miłecki)

  Cadence PCIe controller driver:
   - Retrain Link to work around Gen2 training defect (Nadeem Athani)
   - Fix merge botch in cdns_pcie_host_map_dma_ranges() (Krzysztof
     Wilczyński)

  Freescale Layerscape PCIe controller driver:
   - Add LX2160A rev2 EP mode support (Hou Zhiqiang)
   - Convert to builtin_platform_driver() (Michael Walle)

  MediaTek PCIe controller driver:
   - Fix OF node reference leak (Krzysztof Wilczyński)

  Microchip PolarFlare PCIe controller driver:
   - Add Microchip PolarFire PCIe controller driver (Daire McNamara)

  Qualcomm PCIe controller driver:
   - Use PHY_REFCLK_USE_PAD only for ipq8064 (Ansuel Smith)
   - Add support for ddrss_sf_tbu clock for sm8250 (Dmitry Baryshkov)

  Renesas R-Car PCIe controller driver:
   - Drop PCIE_RCAR config option (Lad Prabhakar)
   - Always allocate MSI addresses in 32bit space (Marek Vasut)

  Rockchip PCIe controller driver:
   - Add FriendlyARM NanoPi M4B DT binding (Chen-Yu Tsai)
   - Make 'ep-gpios' DT property optional (Chen-Yu Tsai)

  Synopsys DesignWare PCIe controller driver:
   - Work around ECRC configuration hardware defect (Vidya Sagar)
   - Drop support for config space in DT 'ranges' (Rob Herring)
   - Change size to u64 for EP outbound iATU (Shradha Todi)
   - Add upper limit address for outbound iATU (Shradha Todi)
   - Make dw_pcie ops optional (Jisheng Zhang)
   - Remove unnecessary dw_pcie_ops from al driver (Jisheng Zhang)

  Xilinx Versal CPM PCIe controller driver:
   - Fix OF node reference leak (Pan Bian)

  Miscellaneous:
   - Remove tango host controller driver (Arnd Bergmann)
   - Remove IRQ handler & data together (altera-msi, brcmstb, dwc)
     (Martin Kaiser)
   - Fix xgene-msi race in installing chained IRQ handler (Martin
     Kaiser)
   - Apply CONFIG_PCI_DEBUG to entire drivers/pci hierarchy (Junhao He)
   - Fix pci-bridge-emul array overruns (Russell King)
   - Remove obsolete uses of WARN_ON(in_interrupt()) (Sebastian Andrzej
     Siewior)"

* tag 'pci-v5.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (69 commits)
  PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064
  PCI: qcom: Add support for ddrss_sf_tbu clock
  dt-bindings: PCI: qcom: Document ddrss_sf_tbu clock for sm8250
  PCI: al: Remove useless dw_pcie_ops
  PCI: dwc: Don't assume the ops in dw_pcie always exist
  PCI: dwc: Add upper limit address for outbound iATU
  PCI: dwc: Change size to u64 for EP outbound iATU
  PCI: dwc: Drop support for config space in 'ranges'
  PCI: layerscape: Convert to builtin_platform_driver()
  PCI: layerscape: Add LX2160A rev2 EP mode support
  dt-bindings: PCI: layerscape: Add LX2160A rev2 compatible strings
  PCI: dwc: Work around ECRC configuration issue
  PCI/portdrv: Report reset for frozen channel
  PCI/AER: Specify the type of Port that was reset
  PCI/ERR: Retain status from error notification
  PCI/AER: Clear AER status from Root Port when resetting Downstream Port
  PCI/ERR: Clear status of the reporting device
  dt-bindings: arm: rockchip: Add FriendlyARM NanoPi M4B
  PCI: rockchip: Make 'ep-gpios' DT property optional
  Documentation: PCI: Add PCI endpoint NTB function user guide
  ...
2021-02-25 09:56:08 -08:00