linux.git/fs/pstore, branch v5.17

Merge tag 'pstore-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2022-01-10T19:48:37+00:00

Pull pstore update from Kees Cook:

 - Add boot param for early ftrace recording in pstore (Uwe
   Kleine-König)

* tag 'pstore-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  pstore/ftrace: Allow immediate recording

pstore/blk: Use "%lu" to format unsigned long

2021-11-21T17:44:19+00:00

On 32-bit:

    fs/pstore/blk.c: In function ‘__best_effort_init’:
    include/linux/kern_levels.h:5:18: warning: format ‘%zu’ expects argument of type ‘size_t’, but argument 3 has type ‘long unsigned int’ [-Wformat=]
	5 | #define KERN_SOH "\001"  /* ASCII Start Of Header */
	  |                  ^~~~~~
    include/linux/kern_levels.h:14:19: note: in expansion of macro ‘KERN_SOH’
       14 | #define KERN_INFO KERN_SOH "6" /* informational */
	  |                   ^~~~~~~~
    include/linux/printk.h:373:9: note: in expansion of macro ‘KERN_INFO’
      373 |  printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	  |         ^~~~~~~~~
    fs/pstore/blk.c:314:3: note: in expansion of macro ‘pr_info’
      314 |   pr_info("attached %s (%zu) (no dedicated panic_write!)\n",
	  |   ^~~~~~~

Cc: stable@vger.kernel.org
Fixes: 7bb9557b48fcabaa ("pstore/blk: Use the normal block device I/O path")
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Kees Cook 
Link: https://lore.kernel.org/r/20210629103700.1935012-1-geert@linux-m68k.org
Cc: Jens Axboe 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Linus Torvalds

pstore/ftrace: Allow immediate recording

2021-11-18T18:29:52+00:00

Without a module param knob there was no way to enable pstore ftrace
recording early enough to debug hangs happening during the boot process
before userspace is up enough to enable it via the regular debugfs
knobs.

Signed-off-by: Uwe Kleine-König 
Co-developed-by: Kees Cook 
Signed-off-by: Kees Cook 
Link: https://lore.kernel.org/r/20210610082134.20636-1-u.kleine-koenig@pengutronix.de

Revert "mark pstore-blk as broken"

2021-11-17T00:23:42+00:00

This reverts commit d07f3b081ee632268786601f55e1334d1f68b997.

pstore-blk was fixed to avoid the unwanted APIs in commit 7bb9557b48fc
("pstore/blk: Use the normal block device I/O path"), which landed in
the same release as the commit adding BROKEN.

Cc: Jens Axboe 
Cc: Christoph Hellwig 
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook 
Link: https://lore.kernel.org/r/20211116181559.3975566-1-keescook@chromium.org
Signed-off-by: Jens Axboe

lib: zstd: Add kernel-specific API

2021-11-09T00:55:21+00:00

This patch:
- Moves `include/linux/zstd.h` -> `include/linux/zstd_lib.h`
- Updates modified zstd headers to yearless copyright
- Adds a new API in `include/linux/zstd.h` that is functionally
  equivalent to the in-use subset of the current API. Functions are
  renamed to avoid symbol collisions with zstd, to make it clear it is
  not the upstream zstd API, and to follow the kernel style guide.
- Updates all callers to use the new API.

There are no functional changes in this patch. Since there are no
functional change, I felt it was okay to update all the callers in a
single patch. Once the API is approved, the callers are mechanically
changed.

This patch is preparing for the 3rd patch in this series, which updates
zstd to version 1.4.10. Since the upstream zstd API is no longer exposed
to callers, the update can happen transparently.

Signed-off-by: Nick Terrell 
Tested By: Paul Jones 
Tested-by: Oleksandr Natalenko 
Tested-by: Sedat Dilek  # LLVM/Clang v13.0.0 on x86-64
Tested-by: Jean-Denis Girard

pstore/blk: use bdev_nr_bytes instead of open coding it

2021-10-18T20:43:23+00:00

Use the proper helper to read the block device size.

Signed-off-by: Christoph Hellwig 
Acked-by: Kees Cook 
Link: https://lore.kernel.org/r/20211018101130.1838532-22-hch@lst.de
Signed-off-by: Jens Axboe

Merge tag 'for-5.14/drivers-2021-06-29' of git://git.kernel.dk/linux-block

2021-06-30T19:21:16+00:00

Pull block driver updates from Jens Axboe:
 "Pretty calm round, mostly just NVMe and a bit of MD:

   - NVMe updates (via Christoph)
        - improve the APST configuration algorithm (Alexey Bogoslavsky)
        - look for StorageD3Enable on companion ACPI device
          (Mario Limonciello)
        - allow selecting the network interface for TCP connections
          (Martin Belanger)
        - misc cleanups (Amit Engel, Chaitanya Kulkarni, Colin Ian King,
          Christoph)
        - move the ACPI StorageD3 code to drivers/acpi/ and add quirks
          for certain AMD CPUs (Mario Limonciello)
        - zoned device support for nvmet (Chaitanya Kulkarni)
        - fix the rules for changing the serial number in nvmet
          (Noam Gottlieb)
        - various small fixes and cleanups (Dan Carpenter, JK Kim,
          Chaitanya Kulkarni, Hannes Reinecke, Wesley Sheng, Geert
          Uytterhoeven, Daniel Wagner)

   - MD updates (Via Song)
        - iostats rewrite (Guoqing Jiang)
        - raid5 lock contention optimization (Gal Ofri)

   - Fall through warning fix (Gustavo)

   - Misc fixes (Gustavo, Jiapeng)"

* tag 'for-5.14/drivers-2021-06-29' of git://git.kernel.dk/linux-block: (78 commits)
  nvmet: use NVMET_MAX_NAMESPACES to set nn value
  loop: Fix missing discard support when using LOOP_CONFIGURE
  nvme.h: add missing nvme_lba_range_type endianness annotations
  nvme: remove zeroout memset call for struct
  nvme-pci: remove zeroout memset call for struct
  nvmet: remove zeroout memset call for struct
  nvmet: add ZBD over ZNS backend support
  nvmet: add Command Set Identifier support
  nvmet: add nvmet_req_bio put helper for backends
  nvmet: add req cns error complete helper
  block: export blk_next_bio()
  nvmet: remove local variable
  nvmet: use nvme status value directly
  nvmet: use u32 type for the local variable nsid
  nvmet: use u32 for nvmet_subsys max_nsid
  nvmet: use req->cmd directly in file-ns fast path
  nvmet: use req->cmd directly in bdev-ns fast path
  nvmet: make ver stable once connection established
  nvmet: allow mn change if subsys not discovered
  nvmet: make sn stable once connection was established
  ...

pstore/blk: Include zone in pstore_device_info

2021-06-17T04:09:31+00:00

Information was redundant between struct pstore_zone_info and struct
pstore_device_info. Use struct pstore_zone_info, with member name "zone".

Additionally untangle the logic for the "best effort" block device
instance.

Signed-off-by: Kees Cook 
Fixed-by: Pu Lehui 
Link: https://lore.kernel.org/lkml/20210617005424.182305-1-pulehui@huawei.com

pstore/blk: Fix kerndoc and redundancy on blkdev param

2021-06-16T16:27:32+00:00

Remove redundant details of blkdev and fix up resulting kerndoc.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Kees Cook

pstore/blk: Use the normal block device I/O path

2021-06-16T16:26:56+00:00

Stop poking into block layer internals and just open the block device
file an use kernel_read and kernel_write on it. Note that this means
the transformation from name_to_dev_t can't be used anymore when
pstore_blk is loaded as a module: a full filesystem device path name
must be used instead. Additionally removes ":internal:" kerndoc link,
since no such documentation remains.

Co-developed-by: Christoph Hellwig 
Signed-off-by: Christoph Hellwig 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Kees Cook