The following patches will introduce a small degree of write support to
the module. This is obviously very dangerous, so keep it disabled by
default and provide a new 'readwrite' mount option for interested users
to request it explicitly.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Mention the existence of the apfsprogs project in the documentation for
the module.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Give credit to Gabriel and Arnaud for their contributions, and also add
a link to the official specification for the filesystem.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Verify the checksums for not only the container superblock, but also the
volume superblock and the object maps.
As for the b-tree nodes, checking them has a big impact in performance,
probably because too many are being read repeatedly. This will
hopefully improve in the future, but for now provide a mount option to
let the user decide what to do.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Backmerge the latest kernel release so that we can fully support the
64-bit timestamps for atime, ctime and mtime. The inode creation time
will be handled in the next commit.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Gabriel has volunteered to send me filesystem images for testing, so
remove that request from the module documentation.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Before normalizing a filename, check the volume features to decide if
case folding is required.
This patch adds yet another parameter to apfs_init_key(). The apfs_key
structure was probably a bad idea, because keys of different types have
little in common.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Pull UBIFS updates from Richard Weinberger:
- Full filesystem authentication feature, UBIFS is now able to have the
whole filesystem structure authenticated plus user data encrypted and
authenticated.
- Minor cleanups
* tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs: (26 commits)
ubifs: Remove unneeded semicolon
Documentation: ubifs: Add authentication whitepaper
ubifs: Enable authentication support
ubifs: Do not update inode size in-place in authenticated mode
ubifs: Add hashes and HMACs to default filesystem
ubifs: authentication: Authenticate super block node
ubifs: Create hash for default LPT
ubfis: authentication: Authenticate master node
ubifs: authentication: Authenticate LPT
ubifs: Authenticate replayed journal
ubifs: Add auth nodes to garbage collector journal head
ubifs: Add authentication nodes to journal
ubifs: authentication: Add hashes to index nodes
ubifs: Add hashes to the tree node cache
ubifs: Create functions to embed a HMAC in a node
ubifs: Add helper functions for authentication support
ubifs: Add separate functions to init/crc a node
ubifs: Format changes for authentication support
ubifs: Store read superblock node
ubifs: Drop write_node
...
Pull vfs dedup fixes from Dave Chinner:
"This reworks the vfs data cloning infrastructure.
We discovered many issues with these interfaces late in the 4.19 cycle
- the worst of them (data corruption, setuid stripping) were fixed for
XFS in 4.19-rc8, but a larger rework of the infrastructure fixing all
the problems was needed. That rework is the contents of this pull
request.
Rework the vfs_clone_file_range and vfs_dedupe_file_range
infrastructure to use a common .remap_file_range method and supply
generic bounds and sanity checking functions that are shared with the
data write path. The current VFS infrastructure has problems with
rlimit, LFS file sizes, file time stamps, maximum filesystem file
sizes, stripping setuid bits, etc and so they are addressed in these
commits.
We also introduce the ability for the ->remap_file_range methods to
return short clones so that clones for vfs_copy_file_range() don't get
rejected if the entire range can't be cloned. It also allows
filesystems to sliently skip deduplication of partial EOF blocks if
they are not capable of doing so without requiring errors to be thrown
to userspace.
Existing filesystems are converted to user the new remap_file_range
method, and both XFS and ocfs2 are modified to make use of the new
generic checking infrastructure"
* tag 'xfs-4.20-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (28 commits)
xfs: remove [cm]time update from reflink calls
xfs: remove xfs_reflink_remap_range
xfs: remove redundant remap partial EOF block checks
xfs: support returning partial reflink results
xfs: clean up xfs_reflink_remap_blocks call site
xfs: fix pagecache truncation prior to reflink
ocfs2: remove ocfs2_reflink_remap_range
ocfs2: support partial clone range and dedupe range
ocfs2: fix pagecache truncation prior to reflink
ocfs2: truncate page cache for clone destination file before remapping
vfs: clean up generic_remap_file_range_prep return value
vfs: hide file range comparison function
vfs: enable remap callers that can handle short operations
vfs: plumb remap flags through the vfs dedupe functions
vfs: plumb remap flags through the vfs clone functions
vfs: make remap_file_range functions take and return bytes completed
vfs: remap helper should update destination inode metadata
vfs: pass remap flags to generic_remap_checks
vfs: pass remap flags to generic_remap_file_range_prep
vfs: combine the clone and dedupe into a single remap_file_range
...
Pull overlayfs updates from Miklos Szeredi:
"A mix of fixes and cleanups"
* tag 'ovl-update-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: automatically enable redirect_dir on metacopy=on
ovl: check whiteout in ovl_create_over_whiteout()
ovl: using posix_acl_xattr_size() to get size instead of posix_acl_to_xattr()
ovl: abstract ovl_inode lock with a helper
ovl: remove the 'locked' argument of ovl_nlink_{start,end}
ovl: relax requirement for non null uuid of lower fs
ovl: fold copy-up helpers into callers
ovl: untangle copy up call chain
ovl: relax permission checking on underlying layers
ovl: fix recursive oi->lock in ovl_link()
vfs: fix FIGETBSZ ioctl on an overlayfs file
ovl: clean up error handling in ovl_get_tmpfile()
ovl: fix error handling in ovl_verify_set_fh()
Current behavior is to automatically disable metacopy if redirect_dir is
not enabled and proceed with the mount.
If "metacopy=on" mount option was given, then this behavior can confuse the
user: no mount failure, yet metacopy is disabled.
This patch makes metacopy=on imply redirect_dir=on.
The converse is also true: turning off full redirect with redirect_dir=
{off|follow|nofollow} will disable metacopy.
If both metacopy=on and redirect_dir={off|follow|nofollow} is specified,
then mount will fail, since there's no way to correctly resolve the
conflict.
Reported-by: Daniel Walsh <dwalsh@redhat.com>
Fixes: d5791044d2 ("ovl: Provide a mount option metacopy=on/off...")
Cc: <stable@vger.kernel.org> # v4.19
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Pull ceph updates from Ilya Dryomov:
"The highlights are:
- a series that fixes some old memory allocation issues in libceph
(myself). We no longer allocate memory in places where allocation
failures cannot be handled and BUG when the allocation fails.
- support for copy_file_range() syscall (Luis Henriques). If size and
alignment conditions are met, it leverages RADOS copy-from
operation. Otherwise, a local copy is performed.
- a patch that reduces memory requirement of ceph_sync_read() from
the size of the entire read to the size of one object (Zheng Yan).
- fallocate() syscall is now restricted to FALLOC_FL_PUNCH_HOLE (Luis
Henriques)"
* tag 'ceph-for-4.20-rc1' of git://github.com/ceph/ceph-client: (25 commits)
ceph: new mount option to disable usage of copy-from op
ceph: support copy_file_range file operation
libceph: support the RADOS copy-from operation
ceph: add non-blocking parameter to ceph_try_get_caps()
libceph: check reply num_data_items in setup_request_data()
libceph: preallocate message data items
libceph, rbd, ceph: move ceph_osdc_alloc_messages() calls
libceph: introduce alloc_watch_request()
libceph: assign cookies in linger_submit()
libceph: enable fallback to ceph_msg_new() in ceph_msgpool_get()
ceph: num_ops is off by one in ceph_aio_retry_work()
libceph: no need to call osd_req_opcode_valid() in osd_req_encode_op()
ceph: set timeout conditionally in __cap_delay_requeue
libceph: don't consume a ref on pagelist in ceph_msg_data_add_pagelist()
libceph: introduce ceph_pagelist_alloc()
libceph: osd_req_op_cls_init() doesn't need to take opcode
libceph: bump CEPH_MSG_MAX_DATA_LEN
ceph: only allow punch hole mode in fallocate
ceph: refactor ceph_sync_read()
ceph: check if LOOKUPNAME request was aborted when filling trace
...
Pull nfsd updates from Bruce Fields:
"Olga added support for the NFSv4.2 asynchronous copy protocol. We
already supported COPY, by copying a limited amount of data and then
returning a short result, letting the client resend. The asynchronous
protocol should offer better performance at the expense of some
complexity.
The other highlight is Trond's work to convert the duplicate reply
cache to a red-black tree, and to move it and some other server caches
to RCU. (Previously these have meant taking global spinlocks on every
RPC)
Otherwise, some RDMA work and miscellaneous bugfixes"
* tag 'nfsd-4.20' of git://linux-nfs.org/~bfields/linux: (30 commits)
lockd: fix access beyond unterminated strings in prints
nfsd: Fix an Oops in free_session()
nfsd: correctly decrement odstate refcount in error path
svcrdma: Increase the default connection credit limit
svcrdma: Remove try_module_get from backchannel
svcrdma: Remove ->release_rqst call in bc reply handler
svcrdma: Reduce max_send_sges
nfsd: fix fall-through annotations
knfsd: Improve lookup performance in the duplicate reply cache using an rbtree
knfsd: Further simplify the cache lookup
knfsd: Simplify NFS duplicate replay cache
knfsd: Remove dead code from nfsd_cache_lookup
SUNRPC: Simplify TCP receive code
SUNRPC: Replace the cache_detail->hash_lock with a regular spinlock
SUNRPC: Remove non-RCU protected lookup
NFS: Fix up a typo in nfs_dns_ent_put
NFS: Lockless DNS lookups
knfsd: Lockless lookup of NFSv4 identities.
SUNRPC: Lockless server RPCSEC_GSS context lookup
knfsd: Allow lockless lookups of the exports
...
Plumb in a remap flag that enables the filesystem remap handler to
shorten remapping requests for callers that can handle it. Now
copy_file_range can report partial success (in case we run up against
alignment problems, resource limits, etc.).
We also enable CAN_SHORTEN for fideduperange to maintain existing
userspace-visible behavior where xfs/btrfs shorten the dedupe range to
avoid stale post-eof data exposure.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Change the remap_file_range functions to take a number of bytes to
operate upon and return the number of bytes they operated on. This is a
requirement for allowing fs implementations to return short clone/dedupe
results to the user, which will enable us to obey resource limits in a
graceful manner.
A subsequent patch will enable copy_file_range to signal to the
->clone_file_range implementation that it can handle a short length,
which will be returned in the function's return value. For now the
short return is not implemented anywhere so the behavior won't change --
either copy_file_range manages to clone the entire range or it tries an
alternative.
Neither clone ioctl can take advantage of this, alas.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Combine the clone_file_range and dedupe_file_range operations into a
single remap_file_range file operation dispatch since they're
fundamentally the same operation. The differences between the two can
be made in the prep functions.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Pull staging/IIO driver updates from Greg KH:
"Here is the big staging and IIO driver pull request for 4.20-rc1.
There are lots of things here, we ended up adding more lines than
removing, thanks to a large influx of Comedi National Instrument
device support. Someday soon we need to get comedi out of staging...
Other than the comedi drivers, the "big" things here are:
- new iio drivers
- delete dgnc driver (no one used it and no one had the hardware
anymore)
- vbox driver updates and fixes
- erofs fixes
- tons and tons of tiny checkpatch fixes for almost all staging
drivers
All of these have been in linux-next, with the last few happening a
bit "late" due to them getting stuck on my laptop during travel to the
Mantainers summit"
* tag 'staging-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (690 commits)
staging: gasket: Fix sparse "incorrect type in assignment" warnings.
staging: gasket: remove debug logs for callback invocation
staging: gasket: remove debug logs in page table mapping calls
staging: rtl8188eu: core: Use sizeof(*p) instead of sizeof(struct P) for memory allocation
staging: ks7010: Remove extra blank line
staging: gasket: Remove extra blank line
staging: media: davinci_vpfe: Fix spelling mistake in enum
staging: speakup: Add a pair of braces
staging: wlan-ng: Replace long int with long
staging: MAINTAINERS: remove obsolete IPX staging directory
staging: MAINTAINERS: remove NCP filesystem entry
staging: rtl8188eu: cleanup comparsions to false
staging: gasket: Update device virtual address comment
staging: gasket: sysfs: fix attribute release comment
staging: gasket: apex: fix sysfs_show
staging: gasket: page_table: simplify gasket_components_to_dev_address
staging: gasket: page_table: fix comment in components_to_dev_address
staging: gasket: page table: fixup error path allocating coherent mem
staging: gasket: page_table: rearrange gasket_page_table_entry
staging: gasket: page_table: remove unnecessary PTE status set to free
...
The vmstat NR_KERNEL_MISC_RECLAIMABLE counter is for kernel non-slab
allocations that can be reclaimed via shrinker. In /proc/meminfo, we can
show the sum of all reclaimable kernel allocations (including slab) as
"KReclaimable". Add the same counter also to per-node meminfo under /sys
With this counter, users will have more complete information about kernel
memory usage. Non-slab reclaimable pages (currently just the ION
allocator) will not be missing from /proc/meminfo, making users wonder
where part of their memory went. More precisely, they already appear in
MemAvailable, but without the new counter, it's not obvious why the value
in MemAvailable doesn't fully correspond with the sum of other counters
participating in it.
Link: http://lkml.kernel.org/r/20180731090649.16028-6-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Vijayanand Jitta <vjitta@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull more ->lookup() cleanups from Al Viro:
"Some ->lookup() instances are still overcomplicating the life
for themselves, open-coding the stuff that would be handled by
d_splice_alias() just fine.
Simplify a couple of such cases caught this cycle and document
d_splice_alias() intended use"
* 'work.lookup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Document d_splice_alias() calling conventions for ->lookup() users.
simplify btrfs_lookup()
clean erofs_lookup()
Pull documentation updates from Jonathan Corbet:
"This is a fairly typical cycle for documentation. There's some welcome
readability improvements for the formatted output, some LICENSES
updates including the addition of the ISC license, the removal of the
unloved and unmaintained 00-INDEX files, the deprecated APIs document
from Kees, more MM docs from Mike Rapoport, and the usual pile of typo
fixes and corrections"
* tag 'docs-4.20' of git://git.lwn.net/linux: (41 commits)
docs: Fix typos in histogram.rst
docs: Introduce deprecated APIs list
kernel-doc: fix declaration type determination
doc: fix a typo in adding-syscalls.rst
docs/admin-guide: memory-hotplug: remove table of contents
doc: printk-formats: Remove bogus kobject references for device nodes
Documentation: preempt-locking: Use better example
dm flakey: Document "error_writes" feature
docs/completion.txt: Fix a couple of punctuation nits
LICENSES: Add ISC license text
LICENSES: Add note to CDDL-1.0 license that it should not be used
docs/core-api: memory-hotplug: add some details about locking internals
docs/core-api: rename memory-hotplug-notifier to memory-hotplug
docs: improve readability for people with poorer eyesight
yama: clarify ptrace_scope=2 in Yama documentation
docs/vm: split memory hotplug notifier description to Documentation/core-api
docs: move memory hotplug description into admin-guide/mm
doc: Fix acronym "FEKEK" in ecryptfs
docs: fix some broken documentation references
iommu: Fix passthrough option documentation
...
Pull ext4 updates from Ted Ts'o:
- further restructure ext4 documentation
- fix up ext4's delayed allocation for bigalloc file systems
- fix up some syzbot-detected races in EXT4_IOC_MOVE_EXT,
EXT4_IOC_SWAP_BOOT, and ext4_remount
- ... and a few other miscellaneous bugs and optimizations.
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
ext4: fix use-after-free race in ext4_remount()'s error path
ext4: cache NULL when both default_acl and acl are NULL
docs: promote the ext4 data structures book to top level
docs: move ext4 administrative docs to admin-guide/
jbd2: fix use after free in jbd2_log_do_checkpoint()
ext4: propagate error from dquot_initialize() in EXT4_IOC_FSSETXATTR
ext4: fix setattr project check in fssetxattr ioctl
docs: make ext4 readme tables readable
docs: fix ext4 documentation table formatting problems
docs: generate a separate ext4 pdf file from the documentation
ext4: convert fault handler to use vm_fault_t type
ext4: initialize retries variable in ext4_da_write_inline_data_begin()
ext4: fix EXT4_IOC_SWAP_BOOT
ext4: fix build error when DX_DEBUG is defined
ext4: fix argument checking in EXT4_IOC_MOVE_EXT
ext4: fix reserved cluster accounting at page invalidation time
ext4: adjust reserved cluster count when removing extents
ext4: reduce reserved cluster count by number of allocated clusters
ext4: fix reserved cluster accounting at delayed write time
ext4: add new pending reservation mechanism
...
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've added 1) superblock checksum feature, 2)
implemented new mount option which we can disable/enable checkpoint to
provide atomic updates of entire filesystem, 3) refactored quota
operations to enhance its consistency along with checkpoint, 4) fixed
subtle IO hang conditions and roll-forward recovery flow to resurrect
any fsync'ed inode metadata.
Enhancements:
- add checksum to keep superblock contents more safe
- add checkpoint=disable/enable to support A/B update of entire filesystem
- use plug for readahead IO in readdir
- add more IO counts to avoid block layer hacks
Bug fixes:
- prevent data corruption issue for hardware encryption
- fix IO hang issues when GC is heavily triggered
- add missing up_read in __write_node_page
- recover inode metadata during roll-forward recovery flow
- fix null pointer dereference issue in wrongly configured discard map
There are some more sanity checks and minor bug fixes as well"
* tag 'f2fs-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (62 commits)
f2fs: fix to keep project quota consistent
f2fs: guarantee journalled quota data by checkpoint
f2fs: cleanup dirty pages if recover failed
f2fs: fix data corruption issue with hardware encryption
f2fs: fix to recover inode->i_flags of inode block during POR
f2fs: spread f2fs_set_inode_flags()
f2fs: fix to spread clear_cold_data()
Revert "f2fs: fix to clear PG_checked flag in set_page_dirty()"
f2fs: account read IOs and use IO counts for is_idle
f2fs: fix to account IO correctly for cgroup writeback
f2fs: fix to account IO correctly
f2fs: remove request_list check in is_idle()
f2fs: allow to mount, if quota is failed
f2fs: update REQ_TIME in f2fs_cross_rename()
f2fs: do not update REQ_TIME in case of error conditions
f2fs: remove unneeded disable_nat_bits()
f2fs: remove unused sbi->trigger_ssr_threshold
f2fs: shrink sbi->sb_lock coverage in set_file_temperature()
f2fs: use rb_*_cached friends
f2fs: fix to recover cold bit of inode block during POR
...
Ernesto A. Fernández
Linus Torvalds
Miklos Szeredi
Darrick J. Wong
Trond Myklebust
Vlastimil Babka