Commit Graph

1821 Commits

Author SHA1 Message Date
Greg Kroah-Hartman 2b07021a94 debugfs: remove return value of debugfs_create_u32()
No one checks the return value of debugfs_create_u32(), as it's not
needed, so make the return value void, so that no one tries to do so in
the future.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200416145448.GA1380878@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-17 17:08:50 +02:00
Linus Torvalds ca6151a978 A handful of late-arriving fixes for the documentation tree.
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Merge tag 'docs-5.7-2' of git://git.lwn.net/linux

Pull Documentation fixes from Jonathan Corbet:
 "A handful of late-arriving fixes for the documentation tree"

* tag 'docs-5.7-2' of git://git.lwn.net/linux:
  Documentation: android: binderfs: add 'stats' mount option
  Documentation: driver-api/usb/writing_usb_driver.rst Updates documentation links
  docs: driver-api: address duplicate label warning
  Documentation: sysrq: fix RST formatting
  docs: kernel-parameters.txt: Fix broken references
  docs: kernel-parameters.txt: Remove nompx
  docs: filesystems: fix typo in qnx6.rst
2020-04-10 17:53:43 -07:00
Linus Torvalds 4e4bdcfa21 orangefs: a fix and two cleanups and a merge conflict
Fix: Christoph Hellwig noticed that some logic I added to
      orangefs_file_read_iter introduced a race condition, so he
      sent a reversion patch. I had to modify his patch since
      reverting at this point broke Orangefs.
 
 Cleanup 1: Christoph Hellwig noticed that we were doing some unnecessary
            work in orangefs_flush, so he sent in a patch that removed
            the un-needed code.
 
 Cleanup 2: Al Viro told me he had trouble building Orangefs. Orangefs
            should be easy to build, even for Al :-). I looked back
            at the test server build notes in orangefs.txt, just in case
            that's where the trouble really is, and found a couple of
            typos and made a couple of clarifications.
 
 Merge Conflict: Stephen Rothwell reported that my modifications to
                 orangefs.txt caused a merge conflict with orangefs.rst
                 in Linux Next. I wasn't sure what to do, so I asked,
                 and Jonathan Corbet said not to worry about it and
                 just to report it to Linus.
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Merge tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
 "A fix and two cleanups.

  Fix:

   - Christoph Hellwig noticed that some logic I added to
     orangefs_file_read_iter introduced a race condition, so he sent a
     reversion patch. I had to modify his patch since reverting at this
     point broke Orangefs.

  Cleanups:

   - Christoph Hellwig noticed that we were doing some unnecessary work
     in orangefs_flush, so he sent in a patch that removed the un-needed
     code.

   - Al Viro told me he had trouble building Orangefs. Orangefs should
     be easy to build, even for Al :-).

     I looked back at the test server build notes in orangefs.txt, just
     in case that's where the trouble really is, and found a couple of
     typos and made a couple of clarifications"

* tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: clarify build steps for test server in orangefs.txt
  orangefs: don't mess with I_DIRTY_TIMES in orangefs_flush
  orangefs: get rid of knob code...
2020-04-10 17:50:01 -07:00
Linus Torvalds 5d30bcacd9 9p pull request for inclusion in 5.7 (take 2)
- Change read with O_NONBLOCK to allow incomplete read and return immediately
 (and document it)
 - Rest is just cleanup (indent, unused field in struct, extra semicolon)
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Merge tag '9p-for-5.7-2' of git://github.com/martinetd/linux

Pull 9p documentation update from Dominique Martinet:
 "Document the new O_NONBLOCK short read behavior"

* tag '9p-for-5.7-2' of git://github.com/martinetd/linux:
  9p: document short read behaviour with O_NONBLOCK
2020-04-08 21:51:14 -07:00
Linus Torvalds fcc95f0640 The main items are:
- support for asynchronous create and unlink (Jeff Layton).  Creates
   and unlinks are satisfied locally, without waiting for a reply from
   the MDS, provided the client has been granted appropriate caps (new
   in v15.y.z ("Octopus") release).  This can be a big help for metadata
   heavy workloads such as tar and rsync.  Opt-in with the new nowsync
   mount option.
 
 - multiple blk-mq queues for rbd (Hannes Reinecke and myself).  When
   the driver was converted to blk-mq, we settled on a single blk-mq
   queue because of a global lock in libceph and some other technical
   debt.  These have since been addressed, so allocate a queue per CPU
   to enhance parallelism.
 
 - don't hold onto caps that aren't actually needed (Zheng Yan).  This
   has been our long-standing behavior, but it causes issues with some
   active/standby applications (synchronous I/O, stalls if the standby
   goes down, etc).
 
 - .snap directory timestamps consistent with ceph-fuse (Luis Henriques)
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Merge tag 'ceph-for-5.7-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "The main items are:

   - support for asynchronous create and unlink (Jeff Layton).

     Creates and unlinks are satisfied locally, without waiting for a
     reply from the MDS, provided the client has been granted
     appropriate caps (new in v15.y.z ("Octopus") release). This can be
     a big help for metadata heavy workloads such as tar and rsync.
     Opt-in with the new nowsync mount option.

   - multiple blk-mq queues for rbd (Hannes Reinecke and myself).

     When the driver was converted to blk-mq, we settled on a single
     blk-mq queue because of a global lock in libceph and some other
     technical debt. These have since been addressed, so allocate a
     queue per CPU to enhance parallelism.

   - don't hold onto caps that aren't actually needed (Zheng Yan).

     This has been our long-standing behavior, but it causes issues with
     some active/standby applications (synchronous I/O, stalls if the
     standby goes down, etc).

   - .snap directory timestamps consistent with ceph-fuse (Luis
     Henriques)"

* tag 'ceph-for-5.7-rc1' of git://github.com/ceph/ceph-client: (49 commits)
  ceph: fix snapshot directory timestamps
  ceph: wait for async creating inode before requesting new max size
  ceph: don't skip updating wanted caps when cap is stale
  ceph: request new max size only when there is auth cap
  ceph: cleanup return error of try_get_cap_refs()
  ceph: return ceph_mdsc_do_request() errors from __get_parent()
  ceph: check all mds' caps after page writeback
  ceph: update i_requested_max_size only when sending cap msg to auth mds
  ceph: simplify calling of ceph_get_fmode()
  ceph: remove delay check logic from ceph_check_caps()
  ceph: consider inode's last read/write when calculating wanted caps
  ceph: always renew caps if mds_wanted is insufficient
  ceph: update dentry lease for async create
  ceph: attempt to do async create when possible
  ceph: cache layout in parent dir on first sync create
  ceph: add new MDS req field to hold delegated inode number
  ceph: decode interval_sets for delegated inos
  ceph: make ceph_fill_inode non-static
  ceph: perform asynchronous unlink if we have sufficient caps
  ceph: don't take refs to want mask unless we have all bits
  ...
2020-04-08 21:44:05 -07:00
Linus Torvalds c6b80eb89b overlayfs update for 5.7
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Merge tag 'ovl-update-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Pull overlayfs update from Miklos Szeredi:

 - Fix failure to copy-up files from certain NFSv4 mounts

 - Sort out inconsistencies between st_ino and i_ino (used in /proc/locks)

 - Allow consistent (POSIX-y) inode numbering in more cases

 - Allow virtiofs to be used as upper layer

 - Miscellaneous cleanups and fixes

* tag 'ovl-update-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: document xino expected behavior
  ovl: enable xino automatically in more cases
  ovl: avoid possible inode number collisions with xino=on
  ovl: use a private non-persistent ino pool
  ovl: fix WARN_ON nlink drop to zero
  ovl: fix a typo in comment
  ovl: replace zero-length array with flexible-array member
  ovl: ovl_obtain_alias(): don't call d_instantiate_anon() for old
  ovl: strict upper fs requirements for remote upper fs
  ovl: check if upper fs supports RENAME_WHITEOUT
  ovl: allow remote upper
  ovl: decide if revalidate needed on a per-dentry basis
  ovl: separate detection of remote upper layer from stacked overlay
  ovl: restructure dentry revalidation
  ovl: ignore failure to copy up unknown xattrs
  ovl: document permission model
  ovl: simplify i_ino initialization
  ovl: factor out helper ovl_get_root()
  ovl: fix out of date comment and unreachable code
  ovl: fix value of i_ino for lower hardlink corner case
2020-04-08 21:40:30 -07:00
Mike Marshall aa317d3351 orangefs: clarify build steps for test server in orangefs.txt
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2020-04-08 13:01:03 -04:00
Dominique Martinet c6f141412d 9p: document short read behaviour with O_NONBLOCK
Regular files opened with O_NONBLOCK allow read to return after a single
round-trip with the server instead of trying to fill buffer.
Add a few lines in 9p documentation to describe that.

Link: http://lkml.kernel.org/r/1586193572-1375-1-git-send-email-asmadeus@codewreck.org
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
2020-04-08 17:05:28 +02:00
Linus Torvalds f40f31cadc f2fs-for-5.7-rc1
In this round, we've mainly focused on fixing bugs and addressing issues in
 recently introduced compression support.
 
 Enhancement:
 - add zstd support, and set LZ4 by default
 - add ioctl() to show # of compressed blocks
 - show mount time in debugfs
 - replace rwsem with spinlock
 - avoid lock contention in DIO reads
 
 Some major bug fixes wrt compression:
 - compressed block count
 - memory access and leak
 - remove obsolete fields
 - flag controls
 
 Other bug fixes and clean ups:
 - fix overflow when handling .flags in inode_info
 - fix SPO issue during resize FS flow
 - fix compression with fsverity enabled
 - potential deadlock when writing compressed pages
 - show missing mount options
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Merge tag 'f2fs-for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've mainly focused on fixing bugs and addressing
  issues in recently introduced compression support.

  Enhancement:
   - add zstd support, and set LZ4 by default
   - add ioctl() to show # of compressed blocks
   - show mount time in debugfs
   - replace rwsem with spinlock
   - avoid lock contention in DIO reads

  Some major bug fixes wrt compression:
   - compressed block count
   - memory access and leak
   - remove obsolete fields
   - flag controls

  Other bug fixes and clean ups:
   - fix overflow when handling .flags in inode_info
   - fix SPO issue during resize FS flow
   - fix compression with fsverity enabled
   - potential deadlock when writing compressed pages
   - show missing mount options"

* tag 'f2fs-for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (66 commits)
  f2fs: keep inline_data when compression conversion
  f2fs: fix to disable compression on directory
  f2fs: add missing CONFIG_F2FS_FS_COMPRESSION
  f2fs: switch discard_policy.timeout to bool type
  f2fs: fix to verify tpage before releasing in f2fs_free_dic()
  f2fs: show compression in statx
  f2fs: clean up dic->tpages assignment
  f2fs: compress: support zstd compress algorithm
  f2fs: compress: add .{init,destroy}_decompress_ctx callback
  f2fs: compress: fix to call missing destroy_compress_ctx()
  f2fs: change default compression algorithm
  f2fs: clean up {cic,dic}.ref handling
  f2fs: fix to use f2fs_readpage_limit() in f2fs_read_multi_pages()
  f2fs: xattr.h: Make stub helpers inline
  f2fs: fix to avoid double unlock
  f2fs: fix potential .flags overflow on 32bit architecture
  f2fs: fix NULL pointer dereference in f2fs_verity_work()
  f2fs: fix to clear PG_error if fsverity failed
  f2fs: don't call fscrypt_get_encryption_info() explicitly in f2fs_tmpfile()
  f2fs: don't trigger data flush in foreground operation
  ...
2020-04-07 13:48:26 -07:00
Vilhelm Prytz 86f93e7447 docs: filesystems: fix typo in qnx6.rst
- 'structer' replaced with 'structure'

Signed-off-by: Vilhelm Prytz <vilhelm@prytznet.se>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-07 13:20:56 -06:00
Linus Torvalds 9c94b39560 1) Replace ext4's bmap and iopoll implementations to use iomap.
2)  Clean up extent tree handling.
 
 3)  Other cleanups and miscellaneous bug fixes
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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:

 - Replace ext4's bmap and iopoll implementations to use iomap.

 - Clean up extent tree handling.

 - Other cleanups and miscellaneous bug fixes

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (31 commits)
  ext4: save all error info in save_error_info() and drop ext4_set_errno()
  ext4: fix incorrect group count in ext4_fill_super error message
  ext4: fix incorrect inodes per group in error message
  ext4: don't set dioread_nolock by default for blocksize < pagesize
  ext4: disable dioread_nolock whenever delayed allocation is disabled
  ext4: do not commit super on read-only bdev
  ext4: avoid ENOSPC when avoiding to reuse recently deleted inodes
  ext4: unregister sysfs path before destroying jbd2 journal
  ext4: check for non-zero journal inum in ext4_calculate_overhead
  ext4: remove map_from_cluster from ext4_ext_map_blocks
  ext4: clean up ext4_ext_insert_extent() call in ext4_ext_map_blocks()
  ext4: mark block bitmap corrupted when found instead of BUGON
  ext4: use flexible-array member for xattr structs
  ext4: use flexible-array member in struct fname
  Documentation: correct the description of FIEMAP_EXTENT_LAST
  ext4: move ext4_fiemap to use iomap framework
  ext4: make ext4_ind_map_blocks work with fiemap
  ext4: move ext4 bmap to use iomap infrastructure
  ext4: optimize ext4_ext_precache for 0 depth
  ext4: add IOMAP_F_MERGED for non-extent based mapping
  ...
2020-04-05 10:54:03 -07:00
Chao Yu 50cfa66f0d f2fs: compress: support zstd compress algorithm
Add zstd compress algorithm support, use "compress_algorithm=zstd"
mountoption to enable it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-04-03 10:21:10 -07:00
Linus Torvalds 9c577491b9 Merge branch 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pathwalk sanitizing from Al Viro:
 "Massive pathwalk rewrite and cleanups.

  Several iterations have been posted; hopefully this thing is getting
  readable and understandable now. Pretty much all parts of pathname
  resolutions are affected...

  The branch is identical to what has sat in -next, except for commit
  message in "lift all calls of step_into() out of follow_dotdot/
  follow_dotdot_rcu", crediting Qian Cai for reporting the bug; only
  commit message changed there."

* 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (69 commits)
  lookup_open(): don't bother with fallbacks to lookup+create
  atomic_open(): no need to pass struct open_flags anymore
  open_last_lookups(): move complete_walk() into do_open()
  open_last_lookups(): lift O_EXCL|O_CREAT handling into do_open()
  open_last_lookups(): don't abuse complete_walk() when all we want is unlazy
  open_last_lookups(): consolidate fsnotify_create() calls
  take post-lookup part of do_last() out of loop
  link_path_walk(): sample parent's i_uid and i_mode for the last component
  __nd_alloc_stack(): make it return bool
  reserve_stack(): switch to __nd_alloc_stack()
  pick_link(): take reserving space on stack into a new helper
  pick_link(): more straightforward handling of allocation failures
  fold path_to_nameidata() into its only remaining caller
  pick_link(): pass it struct path already with normal refcounting rules
  fs/namei.c: kill follow_mount()
  non-RCU analogue of the previous commit
  helper for mount rootwards traversal
  follow_dotdot(): be lazy about changing nd->path
  follow_dotdot_rcu(): be lazy about changing nd->path
  follow_dotdot{,_rcu}(): massage loops
  ...
2020-04-02 12:30:08 -07:00
Linus Torvalds 1455c69900 fscrypt updates for 5.7
Add an ioctl FS_IOC_GET_ENCRYPTION_NONCE which retrieves a file's
 encryption nonce.  This makes it easier to write automated tests which
 verify that fscrypt is doing the encryption correctly.
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Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt

Pull fscrypt updates from Eric Biggers:
 "Add an ioctl FS_IOC_GET_ENCRYPTION_NONCE which retrieves a file's
  encryption nonce.

  This makes it easier to write automated tests which verify that
  fscrypt is doing the encryption correctly"

* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
  ubifs: wire up FS_IOC_GET_ENCRYPTION_NONCE
  f2fs: wire up FS_IOC_GET_ENCRYPTION_NONCE
  ext4: wire up FS_IOC_GET_ENCRYPTION_NONCE
  fscrypt: add FS_IOC_GET_ENCRYPTION_NONCE ioctl
2020-03-31 12:58:36 -07:00
Linus Torvalds 59838093be Driver core patches for 5.7-rc1
Here is the "big" set of driver core changes for 5.7-rc1.
 
 Nothing huge in here, just lots of little firmware core changes and use
 of new apis, a libfs fix, a debugfs api change, and some driver core
 deferred probe rework.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the "big" set of driver core changes for 5.7-rc1.

  Nothing huge in here, just lots of little firmware core changes and
  use of new apis, a libfs fix, a debugfs api change, and some driver
  core deferred probe rework.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'driver-core-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (44 commits)
  Revert "driver core: Set fw_devlink to "permissive" behavior by default"
  driver core: Set fw_devlink to "permissive" behavior by default
  driver core: Replace open-coded list_last_entry()
  driver core: Read atomic counter once in driver_probe_done()
  libfs: fix infoleak in simple_attr_read()
  driver core: Add device links from fwnode only for the primary device
  platform/x86: touchscreen_dmi: Add info for the Chuwi Vi8 Plus tablet
  platform/x86: touchscreen_dmi: Add EFI embedded firmware info support
  Input: icn8505 - Switch to firmware_request_platform for retreiving the fw
  Input: silead - Switch to firmware_request_platform for retreiving the fw
  selftests: firmware: Add firmware_request_platform tests
  test_firmware: add support for firmware_request_platform
  firmware: Add new platform fallback mechanism and firmware_request_platform()
  Revert "drivers: base: power: wakeup.c: Use built-in RCU list checking"
  drivers: base: power: wakeup.c: Use built-in RCU list checking
  component: allow missing unbind callback
  debugfs: remove return value of debugfs_create_file_size()
  debugfs: Check module state before warning in {full/open}_proxy_open()
  firmware: fix a double abort case with fw_load_sysfs_fallback
  arch_topology: Fix putting invalid cpu clk
  ...
2020-03-30 13:59:52 -07:00
Linus Torvalds 481ed297d9 This has been a busy cycle for documentation work. Highlights include:
- Lots of RST conversion work by Mauro, Daniel ALmeida, and others.
     Maybe someday we'll get to the end of this stuff...maybe...
 
   - Some organizational work to bring some order to the core-api manual.
 
   - Various new docs and additions to the existing documentation.
 
   - Typo fixes, warning fixes, ...
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Merge tag 'docs-5.7' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This has been a busy cycle for documentation work.

  Highlights include:

   - Lots of RST conversion work by Mauro, Daniel ALmeida, and others.
     Maybe someday we'll get to the end of this stuff...maybe...

   - Some organizational work to bring some order to the core-api
     manual.

   - Various new docs and additions to the existing documentation.

   - Typo fixes, warning fixes, ..."

* tag 'docs-5.7' of git://git.lwn.net/linux: (123 commits)
  Documentation: x86: exception-tables: document CONFIG_BUILDTIME_TABLE_SORT
  MAINTAINERS: adjust to filesystem doc ReST conversion
  docs: deprecated.rst: Add BUG()-family
  doc: zh_CN: add translation for virtiofs
  doc: zh_CN: index files in filesystems subdirectory
  docs: locking: Drop :c:func: throughout
  docs: locking: Add 'need' to hardirq section
  docs: conf.py: avoid thousands of duplicate label warning on Sphinx
  docs: prevent warnings due to autosectionlabel
  docs: fix reference to core-api/namespaces.rst
  docs: fix pointers to io-mapping.rst and io_ordering.rst files
  Documentation: Better document the softlockup_panic sysctl
  docs: hw-vuln: tsx_async_abort.rst: get rid of an unused ref
  docs: perf: imx-ddr.rst: get rid of a warning
  docs: filesystems: fuse.rst: supress a Sphinx warning
  docs: translations: it: avoid duplicate refs at programming-language.rst
  docs: driver.rst: supress two ReSt warnings
  docs: trace: events.rst: convert some new stuff to ReST format
  Documentation: Add io_ordering.rst to driver-api manual
  Documentation: Add io-mapping.rst to driver-api manual
  ...
2020-03-30 12:45:23 -07:00
Xiubo Li cb63483ad0 ceph: fix description of some mount options
Based on the latest code, the default value for wsize/rsize is
64MB and the default value for the mount_timeout is 60 seconds.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-30 12:42:40 +02:00
Amir Goldstein 2eda9eaa6d ovl: document xino expected behavior
Summarize the inode properties of different configurations in a table.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2020-03-27 16:51:02 +01:00
Linus Torvalds e2cf67f668 zonefs fixes for 5.6 final
A single fix in this pull request to correctly handle the size of
 read-only zone files (from me).
 
 Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs

Pull zonefs fix from Damien Le Moal:
 "A single fix from me to correctly handle the size of read-only zone
  files"

* tag 'zonefs-5.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
  zonfs: Fix handling of read-only zones
2020-03-25 10:34:02 -07:00
Damien Le Moal ccf4ad7da0 zonfs: Fix handling of read-only zones
The write pointer of zones in the read-only consition is defined as
invalid by the SCSI ZBC and ATA ZAC specifications. It is thus not
possible to determine the correct size of a read-only zone file on
mount. Fix this by handling read-only zones in the same manner as
offline zones by disabling all accesses to the zone (read and write)
and initializing the inode size of the read-only zone to 0).

For zones found to be in the read-only condition at runtime, only
disable write access to the zone and keep the size of the zone file to
its last updated value to allow the user to recover previously written
data.

Also fix zonefs documentation file to reflect this change.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
2020-03-25 11:28:26 +09:00
Wang Wenhu 6735c208c1 doc: zh_CN: add translation for virtiofs
Translate virtiofs.rst in Documentation/filesystems/ into Chinese.

Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Wang Wenhu <wenhu.wang@vivo.com>
Link: https://lore.kernel.org/r/20200316110143.97848-2-wenhu.wang@vivo.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-20 17:19:35 -06:00
Wang Wenhu 9d4ca8c6b9 doc: zh_CN: index files in filesystems subdirectory
Add filesystems subdirectory into the table of Contents for zh_CN,
all translations residing on it would be indexed conveniently.

Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Wang Wenhu <wenhu.wang@vivo.com>
Link: https://lore.kernel.org/r/20200316110143.97848-1-wenhu.wang@vivo.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-20 17:19:31 -06:00
Mauro Carvalho Chehab c44166fe5f docs: prevent warnings due to autosectionlabel
Changeset 58ad30cf91 ("docs: fix reference to core-api/namespaces.rst")
enabled a new feature at Sphinx: it will now generate index for each
document title, plus to each chapter inside it.

There's a drawback, though: one document cannot have two sections
with the same name anymore.

A followup patch will change the logic of autosectionlabel to
avoid most creating references for every single section title,
but still we need to be able to reference the chapters inside
a document.

There are a few places where there are two chapters with the
same name. This patch renames one of the chapters, in order to
avoid symbol conflict within the same document.

PS.: as I don't speach Chinese, I had some help from a friend
(Wen Liu) at the Chinese translation for "publishing patches"
for this document:

	Documentation/translations/zh_CN/process/5.Posting.rst

Fixes: 58ad30cf91 ("docs: fix reference to core-api/namespaces.rst")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/2bffb91e4a63d41bf5fae1c23e1e8b3bba0b8806.1584716446.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-20 17:01:29 -06:00
Eric Biggers e98ad46475 fscrypt: add FS_IOC_GET_ENCRYPTION_NONCE ioctl
Add an ioctl FS_IOC_GET_ENCRYPTION_NONCE which retrieves the nonce from
an encrypted file or directory.  The nonce is the 16-byte random value
stored in the inode's encryption xattr.  It is normally used together
with the master key to derive the inode's actual encryption key.

The nonces are needed by automated tests that verify the correctness of
the ciphertext on-disk.  Except for the IV_INO_LBLK_64 case, there's no
way to replicate a file's ciphertext without knowing that file's nonce.

The nonces aren't secret, and the existing ciphertext verification tests
in xfstests retrieve them from disk using debugfs or dump.f2fs.  But in
environments that lack these debugging tools, getting the nonces by
manually parsing the filesystem structure would be very hard.

To make this important type of testing much easier, let's just add an
ioctl that retrieves the nonce.

Link: https://lore.kernel.org/r/20200314205052.93294-2-ebiggers@kernel.org
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-03-19 21:56:54 -07:00
Greg Kroah-Hartman 526ee72dfd debugfs: remove return value of debugfs_create_file_size()
No one checks the return value of debugfs_create_file_size, as it's not
needed, so make the return value void, so that no one tries to do so in
the future.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200309163640.237984-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18 13:35:29 +01:00
Miklos Szeredi 4c494bd582 ovl: document permission model
Add missing piece of documentation regarding how permissions are checked in
overlayfs.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2020-03-17 15:04:22 +01:00
Ritesh Harjani 7af44c42df Documentation: correct the description of FIEMAP_EXTENT_LAST
Currently FIEMAP_EXTENT_LAST is not working consistently across
different filesystem's fiemap implementations. So add more information
about how else this flag could set in other implementation.

Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/5a00e8d4283d6849e0b8f408c8365b31fbc1d153.1582880246.git.riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-03-14 14:43:13 -04:00
Al Viro b4c0353693 sanitize handling of nd->last_type, kill LAST_BIND
->last_type values are set in 3 places: path_init() (sets to LAST_ROOT),
link_path_walk (LAST_NORM/DOT/DOTDOT) and pick_link (LAST_BIND).

The are checked in walk_component(), lookup_last() and do_last().
They also get copied to the caller by filename_parentat().  In the last
3 cases the value is what we had at the return from link_path_walk().
In case of walk_component() it's either directly downstream from
assignment in link_path_walk() or, when called by lookup_last(), the
value we have at the return from link_path_walk().

The value at the entry into link_path_walk() can survive to return only
if the pathname contains nothing but slashes.  Note that pick_link()
never returns such - pure jumps are handled directly.  So for the calls
of link_path_walk() for trailing symlinks it does not matter what value
had been there at the entry; the value at the return won't depend upon it.

There are 3 call chains that might have pick_link() storing LAST_BIND:

1) pick_link() from step_into() from walk_component() from
link_path_walk().  In that case we will either be parsing the next
component immediately after return into link_path_walk(), which will
overwrite the ->last_type before anyone has a chance to look at it,
or we'll fail, in which case nobody will be looking at ->last_type at all.

2) pick_link() from step_into() from walk_component() from lookup_last().
The value is never looked at due to the above; it won't affect the value
seen at return from any link_path_walk().

3) pick_link() from step_into() from do_last().  Ditto.

In other words, assignemnt in pick_link() is pointless, and so is
LAST_BIND itself; nothing ever looks at that value.  Kill it off.
And make link_path_walk() _always_ assign ->last_type - in the only
case when the value at the entry might survive to the return that value
is always LAST_ROOT, inherited from path_init().  Move that assignment
from path_init() into the beginning of link_path_walk(), to consolidate
the things.

Historical note: LAST_BIND used to be used for the kludge with trailing
pure jump symlinks (extra iteration through the top-level loop).
No point keeping it anymore...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-13 21:08:19 -04:00
Linus Torvalds 807f030b44 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
 "A couple of fixes for old crap in ->atomic_open() instances"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  cifs_atomic_open(): fix double-put on late allocation failure
  gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache
2020-03-12 15:51:26 -07:00
Al Viro d9a9f4849f cifs_atomic_open(): fix double-put on late allocation failure
several iterations of ->atomic_open() calling conventions ago, we
used to need fput() if ->atomic_open() failed at some point after
successful finish_open().  Now (since 2016) it's not needed -
struct file carries enough state to make fput() work regardless
of the point in struct file lifecycle and discarding it on
failure exits in open() got unified.  Unfortunately, I'd missed
the fact that we had an instance of ->atomic_open() (cifs one)
that used to need that fput(), as well as the stale comment in
finish_open() demanding such late failure handling.  Trivially
fixed...

Fixes: fe9ec8291f "do_last(): take fput() on error after opening to out:"
Cc: stable@kernel.org # v4.7+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-12 18:25:20 -04:00
Mauro Carvalho Chehab 3b31589c7d docs: filesystems: fuse.rst: supress a Sphinx warning
Get rid of this warning:

    Documentation/filesystems/fuse.rst:2: WARNING: Explicit markup ends without a blank line; unexpected unindent.

Fixes: 8ab13bca42 ("Documentation: filesystems: convert fuse to RST")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/cad541ec7d8d220d57bd5d097d60c62da64054ac.1583250595.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-10 11:55:25 -06:00
Linus Torvalds b34e5c1332 Driver core / debugfs fixes for 5.6-rc5
Here are 4 small driver core / debugfs patches for 5.6-rc3
 
 They are:
 	- debugfs api cleanup now that all callers for
 	  debugfs_create_regset32() have been fixed up.  This was
 	  waiting until after the -rc1 merge as these fixes came in
 	  through different trees
 	- driver core sync state fixes based on reports of minor issues
 	  found in the feature
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and debugfs fixes from Greg KH:
 "Here are four small driver core / debugfs patches for 5.6-rc3:

   - debugfs api cleanup now that all debugfs_create_regset32() callers
     have been fixed up. This was waiting until after the -rc1 merge as
     these fixes came in through different trees

   - driver core sync state fixes based on reports of minor issues found
     in the feature

  All of these have been in linux-next with no reported issues"

* tag 'driver-core-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Skip unnecessary work when device doesn't have sync_state()
  driver core: Add dev_has_sync_state()
  driver core: Call sync_state() even if supplier has no consumers
  debugfs: remove return value of debugfs_create_regset32()
2020-03-08 10:39:40 -05:00
Mauro Carvalho Chehab 9a6108124c docs: filesystems: convert zonefs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Damien Le Moal <damien.lemoal@wdc.com>
Link: https://lore.kernel.org/r/42a7cfcd19f6b904a9a3188fd4af71bed5050052.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:05:12 -07:00
Mauro Carvalho Chehab c9817ad5d8 docs: filesystems: convert udf.txt to ReST
- Add a SPDX header;
- Add a document title;
- Add table markups;
- Add lists markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/2887f8a3a813a31170389eab687e9f199327dc7d.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:52 -07:00
Mauro Carvalho Chehab 38e56b4ec4 docs: filesystems: convert ubifs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Adjust section titles;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Add lists markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9043dc2965cafc64e6a521e2317c00ecc8303bf6.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 688f118e31 docs: filesystems: convert ubifs-authentication.rst.txt to ReST
- Add a SPDX header;
- Mark some literals as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/0c36091b6660cd372f994bd98e1264491d766c22.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 7e7cd458b8 docs: filesystems: convert tmpfs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Use :field: markup;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/30397a47a78ca59760fbc0fc5f50c5f1002d487a.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 826a613d3f docs: filesystems: convert sysv-fs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5b96a6efba95773af439ab25a7dbe4d0edf8c867.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 86beb97670 docs: filesystems: convert sysfs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Adjust document and section titles;
- use :field: markup;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5c480dcb467315b5df6e25372a65e473b585c36d.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 31771f45c8 docs: filesystems: convert squashfs.txt to ReST
- Add a SPDX header;
- Adjust document and section titles;
- Mark literal blocks as such;
- Add table markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/cec30862c7ee7de7f9cd903e35e6c8bf74cc928a.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 6db0a480aa docs: filesystems: convert romfs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d2cc83e7cd6de63c793ccd3f2588ea40f7f1e764.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 56e6d5c0eb docs: filesystems: convert relay.txt to ReST
- Add a SPDX header;
- Adjust document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Use notes markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/f48bb0fdf64d197f28c6f469adb61a7a091adb75.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab 8979fc9a28 docs: filesystems: convert ramfs-rootfs-initramfs.txt to ReST
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Use notes markups;
- Add lists markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/89cbcc99a6371f3bff3ea1668fe497e8a15c226b.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab d5eefa2c5e docs: filesystems: convert qnx6.txt to ReST
- Add a SPDX header;
- Adjust document title;
- Some whitespace fixes and new line breaks;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/ccd22c1e1426ce4cb30ece9a71c39ebb41844762.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:41 -07:00
Mauro Carvalho Chehab c33e97efa9 docs: filesystems: convert proc.txt to ReST
This document has a nice format! Unfortunately, not exactly
ReST. So, several adjustments were required:

- Add a SPDX header;
- Adjust document and section titles;
- Whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Add table captions;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/1d113d860188de416ca3b0b97371dc2195433d5b.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:40 -07:00
Mauro Carvalho Chehab 18ccb2233f docs: filesystems: convert orangefs.txt to ReST
- Add a SPDX header;
- Adjust document and section titles;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6f438eeff5b029d229197a602bd9b74004fe9b63.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:40 -07:00
Mauro Carvalho Chehab 7cbb468f0c docs: filesystems: convert omfs.txt to ReST
- Add a SPDX header;
- Adjust document title;
- Mark literal blocks as such;
- Add table markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Bob Copeland <me@bobcopeland.com>
Link: https://lore.kernel.org/r/0c125c7c971d81a557ca954992b8d770a9d1e3e8.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:26 -07:00
Mauro Carvalho Chehab fa95e087ff docs: filesystems: convert ocfs2.txt to ReST
- Add a SPDX header;
- Adjust document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Link: https://lore.kernel.org/r/e29a8120bf1d847f23fb68e915f10a7d43bed9e3.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:08 -07:00
Mauro Carvalho Chehab 3d0c60d004 docs: filesystems: convert ocfs2-online-filecheck.txt to ReST
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6007166acc3252697755836354bd29b5a5fb82aa.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:06 -07:00
Mauro Carvalho Chehab 461f2c8f13 docs: filesystems: convert ntfs.txt to ReST
- Add a SPDX header;
- Adjust document title;
- Comment out text-only ToC;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add table markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/f09ca6c9bdd4e7aa7208f3dba0b8753080b38d03.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-02 14:04:06 -07:00