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git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger:
- set_fs removal
- Devicetree support
- Many cleanups from Al
- Various virtio and build related fixes
* tag 'for-linus-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (31 commits)
um: virtio_uml: Allow probing from devicetree
um: Add devicetree support
um: Extract load file helper from initrd.c
um: remove set_fs
hostfs: Fix writeback of dirty pages
um: Use swap() to make code cleaner
um: header debriding - sigio.h
um: header debriding - os.h
um: header debriding - net_*.h
um: header debriding - mem_user.h
um: header debriding - activate_ipi()
um: common-offsets.h debriding...
um, x86: bury crypto_tfm_ctx_offset
um: unexport handle_page_fault()
um: remove a dangling extern of syscall_trace()
um: kill unused cpu()
uml/i386: missing include in barrier.h
um: stop polluting the namespace with registers.h contents
logic_io instance of iounmap() needs volatile on argument
um: move amd64 variant of mmap(2) to arch/x86/um/syscalls_64.c
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull JFFS2, UBI and UBIFS updates from Richard Weinberger:
"JFFS2:
- Fix for a deadlock in jffs2_write_begin()
UBI:
- Fixes in comments
UBIFS:
- Expose error counters in sysfs
- Many bugfixes found by Hulk Robot and others"
* tag 'for-linus-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
jffs2: GC deadlock reading a page that is used in jffs2_write_begin()
ubifs: read-only if LEB may always be taken in ubifs_garbage_collect
ubifs: fix double return leb in ubifs_garbage_collect
ubifs: fix slab-out-of-bounds in ubifs_change_lp
ubifs: fix snprintf() length check
ubifs: Document sysfs nodes
ubifs: Export filesystem error counters
ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers
ubifs: Make use of the helper macro kthread_run()
ubi: Fix a mistake in comment
ubifs: Fix spelling mistakes
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git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm updates from David Teigland:
"This set includes the normal collection of minor fixes and cleanups,
new kmem caches for network messaging structs, a start on some basic
tracepoints, and some new debugfs files for inserting test messages"
* tag 'dlm-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: (32 commits)
fs: dlm: print cluster addr if non-cluster node connects
fs: dlm: memory cache for lowcomms hotpath
fs: dlm: memory cache for writequeue_entry
fs: dlm: memory cache for midcomms hotpath
fs: dlm: remove wq_alloc mutex
fs: dlm: use event based wait for pending remove
fs: dlm: check for pending users filling buffers
fs: dlm: use list_empty() to check last iteration
fs: dlm: fix build with CONFIG_IPV6 disabled
fs: dlm: replace use of socket sk_callback_lock with sock_lock
fs: dlm: don't call kernel_getpeername() in error_report()
fs: dlm: fix potential buffer overflow
fs: dlm:Remove unneeded semicolon
fs: dlm: remove double list_first_entry call
fs: dlm: filter user dlm messages for kernel locks
fs: dlm: add lkb waiters debugfs functionality
fs: dlm: add lkb debugfs functionality
fs: dlm: allow create lkb with specific id range
fs: dlm: add debugfs rawmsg send functionality
fs: dlm: let handle callback data as void
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
"Various minor gfs2 cleanups and fixes"
* tag 'gfs2-v5.16-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: dump inode object for iopen glocks
gfs2: Fix gfs2_instantiate description
gfs2: Remove redundant check for GLF_INSTANTIATE_NEEDED
gfs2: remove redundant set of INSTANTIATE_NEEDED
gfs2: Fix __gfs2_holder_init function name in kernel-doc comment
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I was poking around in the directory code while diagnosing online fsck
bugs, and noticed that xfs_readdir doesn't actually take the directory
ILOCK when it calls xfs_dir2_isblock. xfs_dir_open most probably loaded
the data fork mappings and the VFS took i_rwsem (aka IOLOCK_SHARED) so
we're protected against writer threads, but we really need to follow the
locking model like we do in other places.
To avoid unnecessarily cycling the ILOCK for fairly small directories,
change the block/leaf _getdents functions to consume the ILOCK hold that
the parent readdir function took to decide on a _getdents implementation.
It is ok to cycle the ILOCK in readdir because the VFS takes the IOLOCK
in the appropriate mode during lookups and writes, and we don't want to
be holding the ILOCK when we copy directory entries to userspace in case
there's a page fault. We really only need it to protect against data
fork lookups, like we do for other files.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Convert ext4 to use the new mount API, and add support for the
FS_IOC_GETFSLABEL and FS_IOC_SETFSLABEL ioctls.
In addition the usual large number of clean ups and bug fixes, in
particular for the fast_commit feature"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (48 commits)
ext4: don't use the orphan list when migrating an inode
ext4: use BUG_ON instead of if condition followed by BUG
ext4: fix a copy and paste typo
ext4: set csum seed in tmp inode while migrating to extents
ext4: remove unnecessary 'offset' assignment
ext4: remove redundant o_start statement
ext4: drop an always true check
ext4: remove unused assignments
ext4: remove redundant statement
ext4: remove useless resetting io_end_size in mpage_process_page()
ext4: allow to change s_last_trim_minblks via sysfs
ext4: change s_last_trim_minblks type to unsigned long
ext4: implement support for get/set fs label
ext4: only set EXT4_MOUNT_QUOTA when journalled quota file is specified
ext4: don't use kfree() on rcu protected pointer sbi->s_qf_names
ext4: avoid trim error on fs with small groups
ext4: fix an use-after-free issue about data=journal writeback mode
ext4: fix null-ptr-deref in '__ext4_journal_ensure_credits'
ext4: initialize err_blk before calling __ext4_get_inode_loc
ext4: fix a possible ABBA deadlock due to busy PA
...
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Pull xfs updates from Darrick Wong:
"The big new feature here is that the mount code now only bothers to
try to free stale COW staging extents if the fs unmounted uncleanly.
This should reduce mount times, particularly on filesystems supporting
reflink and containing a large number of allocation groups.
Everything else this cycle are bugfixes, as the iomap folios
conversion should be plenty enough excitement for anyone. That and I
ran out of brain bandwidth after Thanksgiving last year.
Summary:
- Fix log recovery with da btree buffers when metauuid is in use.
- Fix type coercion problems in xattr buffer size validation.
- Fix a bug in online scrub dir leaf bestcount checking.
- Only run COW recovery when recovering the log.
- Fix symlink target buffer UAF problems and symlink locking problems
by not exposing xfs innards to the VFS.
- Fix incorrect quotaoff lock usage.
- Don't let transactions cancel cleanly if they have deferred work
items attached.
- Fix a UAF when we're deciding if we need to relog an intent item.
- Reduce kvmalloc overhead for log shadow buffers.
- Clean up sysfs attr group usage.
- Fix a bug where scrub's bmap/rmap checking could race with a quota
file block allocation due to insufficient locking.
- Teach scrub to complain about invalid project ids"
* tag 'xfs-5.17-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: warn about inodes with project id of -1
xfs: hold quota inode ILOCK_EXCL until the end of dqalloc
xfs: Remove redundant assignment of mp
xfs: reduce kvmalloc overhead for CIL shadow buffers
xfs: sysfs: use default_groups in kobj_type
xfs: prevent UAF in xfs_log_item_in_current_chkpt
xfs: prevent a WARN_ONCE() in xfs_ioc_attr_list()
xfs: Fix comments mentioning xfs_ialloc
xfs: check sb_meta_uuid for dabuf buffer recovery
xfs: fix a bug in the online fsck directory leaf1 bestcount check
xfs: only run COW extent recovery when there are no live extents
xfs: don't expose internal symlink metadata buffers to the vfs
xfs: fix quotaoff mutex usage now that we don't support disabling it
xfs: shut down filesystem if we xfs_trans_cancel with deferred work items
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"This end of the year branch is intentionally not that exciting. Most
of the changes are under the hood, but there are some minor user
visible improvements and several performance improvements too.
Features:
- make send work with concurrent block group relocation.
We're not allowed to prevent send failing or silently producing
some bad stream but with more fine grained locking and checks it's
possible. The send vs deduplication exclusion could reuse the same
logic in the future.
- new exclusive operation 'balance paused' to allow adding a device
to filesystem with paused balance
- new sysfs file for fsid stored in the per-device directory to help
distinguish devices when seeding is enabled, the fsid may differ
from the one reported by the filesystem
Performance improvements:
- less metadata needed for directory logging, directory deletion is
20-40% faster
- in zoned mode, cache zone information during mount to speed up
repeated queries (about 50% speedup)
- free space tree entries get indexed and searched by size (latency
-30%, search run time -30%)
- less contention in tree node locking when inserting a key and no
splits are needed (files/sec in fsmark improves by 1-20%)
Fixes:
- fix ENOSPC failure when attempting direct IO write into NOCOW range
- fix deadlock between quota enable and other quota operations
- global reserve minimum calculations fixed to account for free space
tree
- in zoned mode, fix condition for chunk allocation that may not find
the right zone for reuse and could lead to early ENOSPC
Core:
- global reserve stealing got simplified and cleaned up in evict
- remove async transaction commit based on manual transaction refs,
reuse existing kthread and mechanisms to let it commit transaction
before timeout
- preparatory work for extent tree v2, add wrappers for global tree
roots, truncation path cleanups
- remove readahead framework, it's a bit overengineered and used only
for scrub, and yet it does not cover all its needs, there is
another readahead built in the b-tree search that is now used,
performance drop on HDD is about 5% which is acceptable and scrub
is often throttled anyway, on SSDs there's no reported drop but
slight improvement
- self tests report extent tree state when error occurs
- replace assert with debugging information when an uncommitted
transaction is found at unmount time
Other:
- error handling improvements
- other cleanups and refactoring"
* tag 'for-5.17-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (115 commits)
btrfs: output more debug messages for uncommitted transaction
btrfs: respect the max size in the header when activating swap file
btrfs: fix argument list that the kdoc format and script verified
btrfs: remove unnecessary parameter type from compression_decompress_bio
btrfs: selftests: dump extent io tree if extent-io-tree test failed
btrfs: scrub: cleanup the argument list of scrub_stripe()
btrfs: scrub: cleanup the argument list of scrub_chunk()
btrfs: remove reada infrastructure
btrfs: scrub: use btrfs_path::reada for extent tree readahead
btrfs: scrub: remove the unnecessary path parameter for scrub_raid56_parity()
btrfs: refactor unlock_up
btrfs: skip transaction commit after failure to create subvolume
btrfs: zoned: fix chunk allocation condition for zoned allocator
btrfs: add extent allocator hook to decide to allocate chunk or not
btrfs: zoned: unset dedicated block group on allocation failure
btrfs: zoned: drop redundant check for REQ_OP_ZONE_APPEND and btrfs_is_zoned
btrfs: zoned: sink zone check into btrfs_repair_one_zone
btrfs: zoned: simplify btrfs_check_meta_write_pointer
btrfs: zoned: encapsulate inode locking for zoned relocation
btrfs: sysfs: add devinfo/fsid to retrieve actual fsid from the device
...
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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"In this cycle, tail-packing data inline for compressed files is now
supported so that tail pcluster can be stored and read together with
inode metadata in order to save data I/O and storage space.
In addition to that, to prepare for the upcoming subpage, folio and
fscache features, we also introduce meta buffers to get rid of
erofs_get_meta_page() since it was too close to the page itself.
In addition, in order to show supported kernel features and control
sync decompression strategy, new sysfs nodes are introduced in this
cycle as well.
Summary:
- add sysfs interface and a sysfs node to control sync decompression
- add tail-packing inline support for compressed files
- get rid of erofs_get_meta_page()"
* tag 'erofs-for-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: use meta buffers for zmap operations
erofs: use meta buffers for xattr operations
erofs: use meta buffers for super operations
erofs: use meta buffers for inode operations
erofs: introduce meta buffer operations
erofs: add on-disk compressed tail-packing inline support
erofs: support inline data decompression
erofs: support unaligned data decompression
erofs: introduce z_erofs_fixup_insize
erofs: tidy up z_erofs_lz4_decompress
erofs: clean up erofs_map_blocks tracepoints
erofs: Replace zero-length array with flexible-array member
erofs: add sysfs node to control sync decompression strategy
erofs: add sysfs interface
erofs: rename lz4_0pading to zero_padding
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gfpflags_allow_blocking()
In 9p, afs ceph, and nfs, gfpflags_allow_blocking() (which wraps a
test for __GFP_DIRECT_RECLAIM being set) is used to determine if
->releasepage() should wait for the completion of a DIO write to fscache
with something like:
if (folio_test_fscache(folio)) {
if (!gfpflags_allow_blocking(gfp) || !(gfp & __GFP_FS))
return false;
folio_wait_fscache(folio);
}
Instead, current_is_kswapd() should be used instead.
Note that this is based on a patch originally by Zhaoyang Huang[1]. In
addition to extending it to the other network filesystems and putting it on
top of my fscache rewrite, it also needs to include linux/swap.h in a bunch
of places. Can current_is_kswapd() be moved to linux/mm.h?
Changes
=======
ver #5:
- Dropping the changes for cifs.
Originally-signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Co-developed-by: David Howells <dhowells@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Steve French <smfrench@gmail.com>
cc: Trond Myklebust <trond.myklebust@hammerspace.com>
cc: linux-cachefs@redhat.com
cc: v9fs-developer@lists.sourceforge.net
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: linux-nfs@vger.kernel.org
cc: linux-mm@kvack.org
Link: https://lore.kernel.org/r/1638952658-20285-1-git-send-email-huangzhaoyang@gmail.com/ [1]
Link: https://lore.kernel.org/r/164021590773.640689.16777975200823659231.stgit@warthog.procyon.org.uk/ # v4
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git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull fs idmapping updates from Christian Brauner:
"This contains the work to enable the idmapping infrastructure to
support idmapped mounts of filesystems mounted with an idmapping.
In addition this contains various cleanups that avoid repeated
open-coding of the same functionality and simplify the code in quite a
few places.
We also finish the renaming of the mapping helpers we started a few
kernel releases back and move them to a dedicated header to not
continue polluting the fs header needlessly with low-level idmapping
helpers. With this series the fs header only contains idmapping
helpers that interact with fs objects.
Currently we only support idmapped mounts for filesystems mounted
without an idmapping themselves. This was a conscious decision
mentioned in multiple places (cf. [1]).
As explained at length in [3] it is perfectly fine to extend support
for idmapped mounts to filesystem's mounted with an idmapping should
the need arise. The need has been there for some time now (cf. [2]).
Before we can port any filesystem that is mountable with an idmapping
to support idmapped mounts in the coming cycles, we need to first
extend the mapping helpers to account for the filesystem's idmapping.
This again, is explained at length in our documentation at [3] and
also in the individual commit messages so here's an overview.
Currently, the low-level mapping helpers implement the remapping
algorithms described in [3] in a simplified manner as we could rely on
the fact that all filesystems supporting idmapped mounts are mounted
without an idmapping.
In contrast, filesystems mounted with an idmapping are very likely to
not use an identity mapping and will instead use a non-identity
mapping. So the translation step from or into the filesystem's
idmapping in the remapping algorithm cannot be skipped for such
filesystems.
Non-idmapped filesystems and filesystems not supporting idmapped
mounts are unaffected by this change as the remapping algorithms can
take the same shortcut as before. If the low-level helpers detect that
they are dealing with an idmapped mount but the underlying filesystem
is mounted without an idmapping we can rely on the previous shortcut
and can continue to skip the translation step from or into the
filesystem's idmapping. And of course, if the low-level helpers detect
that they are not dealing with an idmapped mount they can simply
return the relevant id unchanged; no remapping needs to be performed
at all.
These checks guarantee that only the minimal amount of work is
performed. As before, if idmapped mounts aren't used the low-level
helpers are idempotent and no work is performed at all"
Link: 2ca4dcc4909d ("fs/mount_setattr: tighten permission checks") [1]
Link: https://github.com/containers/podman/issues/10374 [2]
Link: Documentations/filesystems/idmappings.rst [3]
Link: a65e58e791a1 ("fs: document and rename fsid helpers") [4]
* tag 'fs.idmapped.v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
fs: support mapped mounts of mapped filesystems
fs: add i_user_ns() helper
fs: port higher-level mapping helpers
fs: remove unused low-level mapping helpers
fs: use low-level mapping helpers
docs: update mapping documentation
fs: account for filesystem mappings
fs: tweak fsuidgid_has_mapping()
fs: move mapping helpers
fs: add is_idmapped_mnt() helper
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Add a tracepoint to track fscache_use/unuse_cookie().
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/164021588628.640689.12942919367404043608.stgit@warthog.procyon.org.uk/ # v4
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When updating the backing store from the pagecache (a'la writepage or
writepages), write to the cache first. This allows us to keep caching
files even when they are being written, as long as we have appropriate
caps.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20211129162907.149445-3-jlayton@kernel.org/ # v1
Link: https://lore.kernel.org/r/20211207134451.66296-3-jlayton@kernel.org/ # v2
Link: https://lore.kernel.org/r/163906985808.143852.1383891557313186623.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967190257.1823006.16713609520911954804.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021585020.640689.6765214932458435472.stgit@warthog.procyon.org.uk/ # v4
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Now that the fscache API has been reworked and simplified, change ceph
over to use it.
With the old API, we would only instantiate a cookie when the file was
open for reads. Change it to instantiate the cookie when the inode is
instantiated and call use/unuse when the file is opened/closed.
Also, ensure we resize the cached data on truncates, and invalidate the
cache in response to the appropriate events. This will allow us to
plumb in write support later.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20211129162907.149445-2-jlayton@kernel.org/ # v1
Link: https://lore.kernel.org/r/20211207134451.66296-2-jlayton@kernel.org/ # v2
Link: https://lore.kernel.org/r/163906984277.143852.14697110691303589000.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967188351.1823006.5065634844099079351.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021581427.640689.14128682147127509264.stgit@warthog.procyon.org.uk/ # v4
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A task can end up indefinitely sleeping in do_select() ->
poll_schedule_timeout() when the following race happens:
TASK1 (thread1) TASK2 TASK1 (thread2)
do_select()
setup poll_wqueues table
with 'fd'
write data to 'fd'
pollwake()
table->triggered = 1
closes 'fd' thread1 is
waiting for
poll_schedule_timeout()
- sees table->triggered
table->triggered = 0
return -EINTR
loop back in do_select()
But at this point when TASK1 loops back, the fdget() in the setup of
poll_wqueues fails. So now so we never find 'fd' is ready for reading
and sleep in poll_schedule_timeout() indefinitely.
Treat an fd that got closed as a fd on which some event happened. This
makes sure cannot block indefinitely in do_select().
Another option would be to return -EBADF in this case but that has a
potential of subtly breaking applications that excercise this behavior
and it happens to work for them. So returning fd as active seems like a
safer choice.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Before this patch, glock dumps would not dump the gl_object for iopen
glocks. This information can help us debug problems related to eviction:
when AN iopen glock is blocked we can see the status of its underlying
inode and its flags, etc.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
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Reading from a file that was just extended by a write, but the write had
not yet reached the server would return ENODATA as illustrated by this
command:
$ xfs_io -c 'open -ft test' -c 'w 4096 1000' -c 'r 0 1000'
wrote 1000/1000 bytes at offset 4096
1000.000000 bytes, 1 ops; 0.0001 sec (5.610 MiB/sec and 5882.3529 ops/sec)
pread: No data available
Fix this case by having netfs assume zeroes when reads from server come
short like AFS and CEPH do
Link: https://lkml.kernel.org/r/20220110111444.926753-1-asmadeus@codewreck.org
Cc: stable@vger.kernel.org
Fixes: eb497943fa21 ("9p: Convert to using the netfs helper lib to do reads and caching")
Co-authored-by: David Howells <dhowells@redhat.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Tested-by: David Howells <dhowells@redhat.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core
----
- Defer freeing TCP skbs to the BH handler, whenever possible, or at
least perform the freeing outside of the socket lock section to
decrease cross-CPU allocator work and improve latency.
- Add netdevice refcount tracking to locate sources of netdevice and
net namespace refcount leaks.
- Make Tx watchdog less intrusive - avoid pausing Tx and restarting
all queues from a single CPU removing latency spikes.
- Various small optimizations throughout the stack from Eric Dumazet.
- Make netdev->dev_addr[] constant, force modifications to go via
appropriate helpers to allow us to keep addresses in ordered data
structures.
- Replace unix_table_lock with per-hash locks, improving performance
of bind() calls.
- Extend skb drop tracepoint with a drop reason.
- Allow SO_MARK and SO_PRIORITY setsockopt under CAP_NET_RAW.
BPF
---
- New helpers:
- bpf_find_vma(), find and inspect VMAs for profiling use cases
- bpf_loop(), runtime-bounded loop helper trading some execution
time for much faster (if at all converging) verification
- bpf_strncmp(), improve performance, avoid compiler flakiness
- bpf_get_func_arg(), bpf_get_func_ret(), bpf_get_func_arg_cnt()
for tracing programs, all inlined by the verifier
- Support BPF relocations (CO-RE) in the kernel loader.
- Further the support for BTF_TYPE_TAG annotations.
- Allow access to local storage in sleepable helpers.
- Convert verifier argument types to a composable form with different
attributes which can be shared across types (ro, maybe-null).
- Prepare libbpf for upcoming v1.0 release by cleaning up APIs,
creating new, extensible ones where missing and deprecating those
to be removed.
Protocols
---------
- WiFi (mac80211/cfg80211):
- notify user space about long "come back in N" AP responses,
allow it to react to such temporary rejections
- allow non-standard VHT MCS 10/11 rates
- use coarse time in airtime fairness code to save CPU cycles
- Bluetooth:
- rework of HCI command execution serialization to use a common
queue and work struct, and improve handling errors reported in
the middle of a batch of commands
- rework HCI event handling to use skb_pull_data, avoiding packet
parsing pitfalls
- support AOSP Bluetooth Quality Report
- SMC:
- support net namespaces, following the RDMA model
- improve connection establishment latency by pre-clearing buffers
- introduce TCP ULP for automatic redirection to SMC
- Multi-Path TCP:
- support ioctls: SIOCINQ, OUTQ, and OUTQNSD
- support socket options: IP_TOS, IP_FREEBIND, IP_TRANSPARENT,
IPV6_FREEBIND, and IPV6_TRANSPARENT, TCP_CORK and TCP_NODELAY
- support cmsgs: TCP_INQ
- improvements in the data scheduler (assigning data to subflows)
- support fastclose option (quick shutdown of the full MPTCP
connection, similar to TCP RST in regular TCP)
- MCTP (Management Component Transport) over serial, as defined by
DMTF spec DSP0253 - "MCTP Serial Transport Binding".
Driver API
----------
- Support timestamping on bond interfaces in active/passive mode.
- Introduce generic phylink link mode validation for drivers which
don't have any quirks and where MAC capability bits fully express
what's supported. Allow PCS layer to participate in the validation.
Convert a number of drivers.
- Add support to set/get size of buffers on the Rx rings and size of
the tx copybreak buffer via ethtool.
- Support offloading TC actions as first-class citizens rather than
only as attributes of filters, improve sharing and device resource
utilization.
- WiFi (mac80211/cfg80211):
- support forwarding offload (ndo_fill_forward_path)
- support for background radar detection hardware
- SA Query Procedures offload on the AP side
New hardware / drivers
----------------------
- tsnep - FPGA based TSN endpoint Ethernet MAC used in PLCs with
real-time requirements for isochronous communication with protocols
like OPC UA Pub/Sub.
- Qualcomm BAM-DMUX WWAN - driver for data channels of modems
integrated into many older Qualcomm SoCs, e.g. MSM8916 or MSM8974
(qcom_bam_dmux).
- Microchip LAN966x multi-port Gigabit AVB/TSN Ethernet Switch driver
with support for bridging, VLANs and multicast forwarding
(lan966x).
- iwlmei driver for co-operating between Intel's WiFi driver and
Intel's Active Management Technology (AMT) devices.
- mse102x - Vertexcom MSE102x Homeplug GreenPHY chips
- Bluetooth:
- MediaTek MT7921 SDIO devices
- Foxconn MT7922A
- Realtek RTL8852AE
Drivers
-------
- Significantly improve performance in the datapaths of: lan78xx,
ax88179_178a, lantiq_xrx200, bnxt.
- Intel Ethernet NICs:
- igb: support PTP/time PEROUT and EXTTS SDP functions on
82580/i354/i350 adapters
- ixgbevf: new PF -> VF mailbox API which avoids the risk of
mailbox corruption with ESXi
- iavf: support configuration of VLAN features of finer
granularity, stacked tags and filtering
- ice: PTP support for new E822 devices with sub-ns precision
- ice: support firmware activation without reboot
- Mellanox Ethernet NICs (mlx5):
- expose control over IRQ coalescing mode (CQE vs EQE) via ethtool
- support TC forwarding when tunnel encap and decap happen between
two ports of the same NIC
- dynamically size and allow disabling various features to save
resources for running in embedded / SmartNIC scenarios
- Broadcom Ethernet NICs (bnxt):
- use page frag allocator to improve Rx performance
- expose control over IRQ coalescing mode (CQE vs EQE) via ethtool
- Other Ethernet NICs:
- amd-xgbe: add Ryzen 6000 (Yellow Carp) Ethernet support
- Microsoft cloud/virtual NIC (mana):
- add XDP support (PASS, DROP, TX)
- Mellanox Ethernet switches (mlxsw):
- initial support for Spectrum-4 ASICs
- VxLAN with IPv6 underlay
- Marvell Ethernet switches (prestera):
- support flower flow templates
- add basic IP forwarding support
- NXP embedded Ethernet switches (ocelot & felix):
- support Per-Stream Filtering and Policing (PSFP)
- enable cut-through forwarding between ports by default
- support FDMA to improve packet Rx/Tx to CPU
- Other embedded switches:
- hellcreek: improve trapping management (STP and PTP) packets
- qca8k: support link aggregation and port mirroring
- Qualcomm 802.11ax WiFi (ath11k):
- qca6390, wcn6855: enable 802.11 power save mode in station mode
- BSS color change support
- WCN6855 hw2.1 support
- 11d scan offload support
- scan MAC address randomization support
- full monitor mode, only supported on QCN9074
- qca6390/wcn6855: report signal and tx bitrate
- qca6390: rfkill support
- qca6390/wcn6855: regdb.bin support
- Intel WiFi (iwlwifi):
- support SAR GEO Offset Mapping (SGOM) and Time-Aware-SAR (TAS)
in cooperation with the BIOS
- support for Optimized Connectivity Experience (OCE) scan
- support firmware API version 68
- lots of preparatory work for the upcoming Bz device family
- MediaTek WiFi (mt76):
- Specific Absorption Rate (SAR) support
- mt7921: 160 MHz channel support
- RealTek WiFi (rtw88):
- Specific Absorption Rate (SAR) support
- scan offload
- Other WiFi NICs
- ath10k: support fetching (pre-)calibration data from nvmem
- brcmfmac: configure keep-alive packet on suspend
- wcn36xx: beacon filter support"
* tag '5.17-net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2048 commits)
tcp: tcp_send_challenge_ack delete useless param `skb`
net/qla3xxx: Remove useless DMA-32 fallback configuration
rocker: Remove useless DMA-32 fallback configuration
hinic: Remove useless DMA-32 fallback configuration
lan743x: Remove useless DMA-32 fallback configuration
net: enetc: Remove useless DMA-32 fallback configuration
cxgb4vf: Remove useless DMA-32 fallback configuration
cxgb4: Remove useless DMA-32 fallback configuration
cxgb3: Remove useless DMA-32 fallback configuration
bnx2x: Remove useless DMA-32 fallback configuration
et131x: Remove useless DMA-32 fallback configuration
be2net: Remove useless DMA-32 fallback configuration
vmxnet3: Remove useless DMA-32 fallback configuration
bna: Simplify DMA setting
net: alteon: Simplify DMA setting
myri10ge: Simplify DMA setting
qlcnic: Simplify DMA setting
net: allwinner: Fix print format
page_pool: remove spinlock in page_pool_refill_alloc_cache()
amt: fix wrong return type of amt_send_membership_update()
...
|
|
MM defined the rule [1] very clearly that once page was set with PG_private
flag, we should increment the refcount in that page, also main flows like
pageout(), migrate_page() will assume there is one additional page
reference count if page_has_private() returns true. Otherwise, we may
get a BUG in page migration:
page:0000000080d05b9d refcount:-1 mapcount:0 mapping:000000005f4d82a8
index:0xe2 pfn:0x14c12
aops:ubifs_file_address_operations [ubifs] ino:8f1 dentry name:"f30e"
flags: 0x1fffff80002405(locked|uptodate|owner_priv_1|private|node=0|
zone=1|lastcpupid=0x1fffff)
page dumped because: VM_BUG_ON_PAGE(page_count(page) != 0)
------------[ cut here ]------------
kernel BUG at include/linux/page_ref.h:184!
invalid opcode: 0000 [#1] SMP
CPU: 3 PID: 38 Comm: kcompactd0 Not tainted 5.15.0-rc5
RIP: 0010:migrate_page_move_mapping+0xac3/0xe70
Call Trace:
ubifs_migrate_page+0x22/0xc0 [ubifs]
move_to_new_page+0xb4/0x600
migrate_pages+0x1523/0x1cc0
compact_zone+0x8c5/0x14b0
kcompactd+0x2bc/0x560
kthread+0x18c/0x1e0
ret_from_fork+0x1f/0x30
Before the time, we should make clean a concept, what does refcount means
in page gotten from grab_cache_page_write_begin(). There are 2 situations:
Situation 1: refcount is 3, page is created by __page_cache_alloc.
TYPE_A - the write process is using this page
TYPE_B - page is assigned to one certain mapping by calling
__add_to_page_cache_locked()
TYPE_C - page is added into pagevec list corresponding current cpu by
calling lru_cache_add()
Situation 2: refcount is 2, page is gotten from the mapping's tree
TYPE_B - page has been assigned to one certain mapping
TYPE_A - the write process is using this page (by calling
page_cache_get_speculative())
Filesystem releases one refcount by calling put_page() in xxx_write_end(),
the released refcount corresponds to TYPE_A (write task is using it). If
there are any processes using a page, page migration process will skip the
page by judging whether expected_page_refs() equals to page refcount.
The BUG is caused by following process:
PA(cpu 0) kcompactd(cpu 1)
compact_zone
ubifs_write_begin
page_a = grab_cache_page_write_begin
add_to_page_cache_lru
lru_cache_add
pagevec_add // put page into cpu 0's pagevec
(refcnf = 3, for page creation process)
ubifs_write_end
SetPagePrivate(page_a) // doesn't increase page count !
unlock_page(page_a)
put_page(page_a) // refcnt = 2
[...]
PB(cpu 0)
filemap_read
filemap_get_pages
add_to_page_cache_lru
lru_cache_add
__pagevec_lru_add // traverse all pages in cpu 0's pagevec
__pagevec_lru_add_fn
SetPageLRU(page_a)
isolate_migratepages
isolate_migratepages_block
get_page_unless_zero(page_a)
// refcnt = 3
list_add(page_a, from_list)
migrate_pages(from_list)
__unmap_and_move
move_to_new_page
ubifs_migrate_page(page_a)
migrate_page_move_mapping
expected_page_refs get 3
(migration[1] + mapping[1] + private[1])
release_pages
put_page_testzero(page_a) // refcnt = 3
page_ref_freeze // refcnt = 0
page_ref_dec_and_test(0 - 1 = -1)
page_ref_unfreeze
VM_BUG_ON_PAGE(-1 != 0, page)
UBIFS doesn't increase the page refcount after setting private flag, which
leads to page migration task believes the page is not used by any other
processes, so the page is migrated. This causes concurrent accessing on
page refcount between put_page() called by other process(eg. read process
calls lru_cache_add) and page_ref_unfreeze() called by migration task.
Actually zhangjun has tried to fix this problem [2] by recalculating page
refcnt in ubifs_migrate_page(). It's better to follow MM rules [1], because
just like Kirill suggested in [2], we need to check all users of
page_has_private() helper. Like f2fs does in [3], fix it by adding/deleting
refcount when setting/clearing private for a page. BTW, according to [4],
we set 'page->private' as 1 because ubifs just simply SetPagePrivate().
And, [5] provided a common helper to set/clear page private, ubifs can
use this helper following the example of iomap, afs, btrfs, etc.
Jump [6] to find a reproducer.
[1] https://lore.kernel.org/lkml/2b19b3c4-2bc4-15fa-15cc-27a13e5c7af1@aol.com
[2] https://www.spinics.net/lists/linux-mtd/msg04018.html
[3] http://lkml.iu.edu/hypermail/linux/kernel/1903.0/03313.html
[4] https://lore.kernel.org/linux-f2fs-devel/20210422154705.GO3596236@casper.infradead.org
[5] https://lore.kernel.org/all/20200517214718.468-1-guoqing.jiang@cloud.ionos.com
[6] https://bugzilla.kernel.org/show_bug.cgi?id=214961
Fixes: 1e51764a3c2ac0 ("UBIFS: add new flash file system")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
|
|
Function ubifs_wbuf_write_nolock() may access buf out of bounds in
following process:
ubifs_wbuf_write_nolock():
aligned_len = ALIGN(len, 8); // Assume len = 4089, aligned_len = 4096
if (aligned_len <= wbuf->avail) ... // Not satisfy
if (wbuf->used) {
ubifs_leb_write() // Fill some data in avail wbuf
len -= wbuf->avail; // len is still not 8-bytes aligned
aligned_len -= wbuf->avail;
}
n = aligned_len >> c->max_write_shift;
if (n) {
n <<= c->max_write_shift;
err = ubifs_leb_write(c, wbuf->lnum, buf + written,
wbuf->offs, n);
// n > len, read out of bounds less than 8(n-len) bytes
}
, which can be catched by KASAN:
=========================================================
BUG: KASAN: slab-out-of-bounds in ecc_sw_hamming_calculate+0x1dc/0x7d0
Read of size 4 at addr ffff888105594ff8 by task kworker/u8:4/128
Workqueue: writeback wb_workfn (flush-ubifs_0_0)
Call Trace:
kasan_report.cold+0x81/0x165
nand_write_page_swecc+0xa9/0x160
ubifs_leb_write+0xf2/0x1b0 [ubifs]
ubifs_wbuf_write_nolock+0x421/0x12c0 [ubifs]
write_head+0xdc/0x1c0 [ubifs]
ubifs_jnl_write_inode+0x627/0x960 [ubifs]
wb_workfn+0x8af/0xb80
Function ubifs_wbuf_write_nolock() accepts that parameter 'len' is not 8
bytes aligned, the 'len' represents the true length of buf (which is
allocated in 'ubifs_jnl_xxx', eg. ubifs_jnl_write_inode), so
ubifs_wbuf_write_nolock() must handle the length read from 'buf' carefully
to write leb safely.
Fetch a reproducer in [Link].
Fixes: 1e51764a3c2ac0 ("UBIFS: add new flash file system")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214785
Reported-by: Chengsong Ke <kechengsong@huawei.com>
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
|
|
Make 'ui->data_len' aligned with 8 bytes before it is assigned to
dirtied_ino_d. Since 8871d84c8f8b0c6b("ubifs: convert to fileattr")
applied, 'setflags()' only affects regular files and directories, only
xattr inode, symlink inode and special inode(pipe/char_dev/block_dev)
have none- zero 'ui->data_len' field, so assertion
'!(req->dirtied_ino_d & 7)' cannot fail in ubifs_budget_space().
To avoid assertion fails in future evolution(eg. setflags can operate
special inodes), it's better to make dirtied_ino_d 8 bytes aligned,
after all aligned size is still zero for regular files.
Fixes: 1e51764a3c2ac05a ("UBIFS: add new flash file system")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
|
|
UBIFS should make sure the flash has enough space to store dirty (Data
that is newer than disk) data (in memory), space budget is exactly
designed to do that. If space budget calculates less data than we need,
'make_reservation()' will do more work(return -ENOSPC if no free space
lelf, sometimes we can see "cannot reserve xxx bytes in jhead xxx, error
-28" in ubifs error messages) with ubifs inodes locked, which may effect
other syscalls.
A simple way to decide how much space do we need when make a budget:
See how much space is needed by 'make_reservation()' in ubifs_jnl_xxx()
function according to corresponding operation.
It's better to report ENOSPC in ubifs_budget_space(), as early as we can.
Fixes: 474b93704f32163 ("ubifs: Implement O_TMPFILE")
Fixes: 1e51764a3c2ac05 ("UBIFS: add new flash file system")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
|
|
'ui->dirty' is not protected by 'ui_mutex' in function do_tmpfile() which
may race with ubifs_write_inode[wb_workfn] to access/update 'ui->dirty',
finally dirty space is released twice.
open(O_TMPFILE) wb_workfn
do_tmpfile
ubifs_budget_space(ino_req = { .dirtied_ino = 1})
d_tmpfile // mark inode(tmpfile) dirty
ubifs_jnl_update // without holding tmpfile's ui_mutex
mark_inode_clean(ui)
if (ui->dirty)
ubifs_release_dirty_inode_budget(ui) // release first time
ubifs_write_inode
mutex_lock(&ui->ui_mutex)
ubifs_release_dirty_inode_budget(ui)
// release second time
mutex_unlock(&ui->ui_mutex)
ui->dirty = 0
Run generic/476 can reproduce following message easily
(See reproducer in [Link]):
UBIFS error (ubi0:0 pid 2578): ubifs_assert_failed [ubifs]: UBIFS assert
failed: c->bi.dd_growth >= 0, in fs/ubifs/budget.c:554
UBIFS warning (ubi0:0 pid 2578): ubifs_ro_mode [ubifs]: switched to
read-only mode, error -22
Workqueue: writeback wb_workfn (flush-ubifs_0_0)
Call Trace:
ubifs_ro_mode+0x54/0x60 [ubifs]
ubifs_assert_failed+0x4b/0x80 [ubifs]
ubifs_release_budget+0x468/0x5a0 [ubifs]
ubifs_release_dirty_inode_budget+0x53/0x80 [ubifs]
ubifs_write_inode+0x121/0x1f0 [ubifs]
...
wb_workfn+0x283/0x7b0
Fix it by holding tmpfile ubifs inode lock during ubifs_jnl_update().
Similar problem exists in whiteout renaming, but previous fix("ubifs:
Rename whiteout atomically") has solved the problem.
Fixes: 474b93704f32163 ("ubifs: Implement O_TMPFILE")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214765
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
|
|
Currently, rename whiteout has 3 steps:
1. create tmpfile(which associates old dentry to tmpfile inode) for
whiteout, and store tmpfile to disk
2. link whiteout, associate whiteout inode to old dentry agagin and
store old dentry, old inode, new dentry on disk
3. writeback dirty whiteout inode to disk
Suddenly power-cut or error occurring(eg. ENOSPC returned by budget,
memory allocation failure) during above steps may cause kinds of problems:
Problem 1: ENOSPC returned by whiteout space budget (before step 2),
old dentry will disappear after rename syscall, whiteout file
cannot be found either.
ls dir // we get file, whiteout
rename(dir/file, dir/whiteout, REANME_WHITEOUT)
ENOSPC = ubifs_budget_space(&wht_req) // return
ls dir // empty (no file, no whiteout)
Problem 2: Power-cut happens before step 3, whiteout inode with 'nlink=1'
is not stored on disk, whiteout dentry(old dentry) is written
on disk, whiteout file is lost on next mount (We get "dead
directory entry" after executing 'ls -l' on whiteout file).
Now, we use following 3 steps to finish rename whiteout:
1. create an in-mem inode with 'nlink = 1' as whiteout
2. ubifs_jnl_rename (Write on disk to finish associating old dentry to
whiteout inode, associating new dentry with old inode)
3. iput(whiteout)
Rely writing in-mem inode on disk by ubifs_jnl_rename() to finish rename
whiteout, which avoids middle disk state caused by suddenly power-cut
and error occurring.
Fixes: 9e0a1fff8db56ea ("ubifs: Implement RENAME_WHITEOUT")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
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
|
|
When killing ksmbd server after connecting rdma, ksmbd threads does not
terminate properly because the rdma connection is still alive.
This patch add shutdown operation to disconnect rdma connection while
ksmbd threads terminate.
Signed-off-by: Yufan Chen <wiz.chen@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Due to restriction that cannot handle multiple
buffer descriptor structures, decrease the maximum
read/write size for Windows clients.
And set the maximum fragmented receive size
in consideration of the receive queue size.
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Create a memory region pool because rdma_rw_ctx_init()
uses memory registration if memory registration yields
better performance than using multiple SGE entries.
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Whenever new parameter is added to smb configuration, It is possible
to break the execution of the IPC daemon by mismatch size of
request/response. This patch tries to reserve space in ipc request/response
in advance to prevent that.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
if CONFIG_LOCKDEP is enabled, the following
kernel warning message is generated because
rdma_accept() checks whehter the handler_mutex
is held by lockdep_assert_held. CM(Connection
Manager) holds the mutex before CM handler
callback is called.
[ 63.211405 ] WARNING: CPU: 1 PID: 345 at drivers/infiniband/core/cma.c:4405 rdma_accept+0x17a/0x350
[ 63.212080 ] RIP: 0010:rdma_accept+0x17a/0x350
...
[ 63.214036 ] Call Trace:
[ 63.214098 ] <TASK>
[ 63.214185 ] smb_direct_accept_client+0xb4/0x170 [ksmbd]
[ 63.214412 ] smb_direct_prepare+0x322/0x8c0 [ksmbd]
[ 63.214555 ] ? rcu_read_lock_sched_held+0x3a/0x70
[ 63.214700 ] ksmbd_conn_handler_loop+0x63/0x270 [ksmbd]
[ 63.214826 ] ? ksmbd_conn_alive+0x80/0x80 [ksmbd]
[ 63.214952 ] kthread+0x171/0x1a0
[ 63.215039 ] ? set_kthread_struct+0x40/0x40
[ 63.215128 ] ret_from_fork+0x22/0x30
To avoid this, move creating a queue pair and accepting
a client from transport_ops->prepare() to
smb_direct_handle_connect_request().
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
If the client ignores the CreditResponse received from the server and
continues to send the request, ksmbd limits the requests if it exceeds
smb2 max credits.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Moves the credit charge deduction from total_credits under the processing
a request. When repeating smb2 lock request and other command request,
there will be a problem that ->total_credits does not decrease.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Add smb2 max credits parameter to adjust maximum credits value to limit
number of outstanding requests.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
When SMB Direct is used with iWARP, Windows use 5445 port for smb direct
port, 445 port for SMB. This patch check ib_device using ib_client to
know if NICs type is iWARP or Infiniband.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Register ksmbd ib client with ib_register_client() to find the rdma capable
network adapter. If ops.get_netdev(Chelsio NICs) is NULL, ksmbd will find
it using ib_device_get_by_netdev in old way.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
We probably want to remove the indirect block to extents migration
feature after a deprecation window, but until then, let's fix a
potential data loss problem caused by the fact that we put the
tmp_inode on the orphan list. In the unlikely case where we crash and
do a journal recovery, the data blocks belonging to the inode being
migrated are also represented in the tmp_inode on the orphan list ---
and so its data blocks will get marked unallocated, and available for
reuse.
Instead, stop putting the tmp_inode on the oprhan list. So in the
case where we crash while migrating the inode, we'll leak an inode,
which is not a disaster. It will be easily fixed the next time we run
fsck, and it's better than potentially having blocks getting claimed
by two different files, and losing data as a result.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Cc: stable@kernel.org
|
|
BUG_ON would be better.
This issue was detected with the help of Coccinelle.
Reported-by: Zeal robot <zealci@zte.com.cn>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Link: https://lore.kernel.org/r/20211228073252.580296-1-xu.xin16@zte.com.cn
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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This was obviously supposed to be an ext4 struct, not xfs. GCC
doesn't care either way so it doesn't affect the build or runtime.
Fixes: cebe85d570cf ("ext4: switch to the new mount api")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Link: https://lore.kernel.org/r/20211215114309.GB14552@kili
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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When migrating to extents, the temporary inode will have it's own checksum
seed. This means that, when swapping the inodes data, the inode checksums
will be incorrect.
This can be fixed by recalculating the extents checksums again. Or simply
by copying the seed into the temporary inode.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213357
Reported-by: Jeroen van Wolffelaar <jeroen@wolffelaar.nl>
Signed-off-by: Luís Henriques <lhenriques@suse.de>
Link: https://lore.kernel.org/r/20211214175058.19511-1-lhenriques@suse.de
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
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Although it is in the loop, offset is reassigned at the beginning of the
while loop. And after the loop, the value will not be used
The clang_analyzer complains as follows:
fs/ext4/dir.c:306:3 warning:
Value stored to 'offset' is never read
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211208075307.404703-1-luo.penghao@zte.com.cn
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The if will goto out of the loop, and until the end of the
function execution, o_start will not be used again.
The clang_analyzer complains as follows:
fs/ext4/move_extent.c:635:5 warning:
Value stored to 'o_start' is never read
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211208075157.404535-1-luo.penghao@zte.com.cn
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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EXT_FIRST_INDEX(ptr) is ptr+12, which can't possibly be null; gcc-12
warns about this.
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20211115172020.57853-1-kilobyte@angband.pl
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The eh assignment in these two places is meaningless, because the
function will goto to merge, which will not use eh.
The clang_analyzer complains as follows:
fs/ext4/extents.c:1988:4 warning:
fs/ext4/extents.c:2016:4 warning:
Value stored to 'eh' is never read
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211104064007.2919-1-luo.penghao@zte.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The local variable assignment at the end of the function is meaningless.
The clang_analyzer complains as follows:
fs/ext4/fast_commit.c:779:2 warning:
Value stored to 'dst' is never read
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211104063406.2747-1-luo.penghao@zte.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The command "make clang-analyzer" detects dead stores in
mpage_process_page() function.
Do not reset io_end_size to 0 in the current paths, as the function
exits on those paths without further using io_end_size.
Signed-off-by: Nghia Le <nghialm78@gmail.com>
Link: https://lore.kernel.org/r/20211025221803.3326-1-nghialm78@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Ext4 has an optimization mechanism for batched disacrd (FITRIM) that
should help speed up subsequent calls of FITRIM ioctl by skipping the
groups that were previously trimmed. However because the FITRIM allows
to set the minimum size of an extent to trim, ext4 stores the last
minimum extent size and only avoids trimming the group if it was
previously trimmed with minimum extent size equal to, or smaller than
the current call.
There is currently no way to bypass the optimization without
umount/mount cycle. This becomes a problem when the file system is
live migrated to a different storage, because the optimization will
prevent possibly useful discard calls to the storage.
Fix it by exporting the s_last_trim_minblks via sysfs interface which
will allow us to set the minimum size to the number of blocks larger
than subsequent FITRIM call, effectively bypassing the optimization.
By setting the s_last_trim_minblks to ULONG_MAX the optimization will be
effectively cleared regardless of the previous state, or file system
configuration.
For example:
getconf ULONG_MAX > /sys/fs/ext4/dm-1/last_trim_minblks
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reported-by: Laurent GUERBY <laurent@guerby.net>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20211103145122.17338-2-lczerner@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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There is no good reason for the s_last_trim_minblks to be atomic. There is
no data integrity needed and there is no real danger in setting and
reading it in a racy manner. Change it to be unsigned long, the same type
as s_clusters_per_group which is the maximum that's allowed.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Suggested-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20211103145122.17338-1-lczerner@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Implement support for FS_IOC_GETFSLABEL and FS_IOC_SETFSLABEL ioctls for
online reading and setting of file system label.
ext4_ioctl_getlabel() is simple, just get the label from the primary
superblock. This might not be the first sb on the file system if
'sb=' mount option is used.
In ext4_ioctl_setlabel() we update what ext4 currently views as a
primary superblock and then proceed to update backup superblocks. There
are two caveats:
- the primary superblock might not be the first superblock and so it
might not be the one used by userspace tools if read directly
off the disk.
- because the primary superblock might not be the first superblock we
potentialy have to update it as part of backup superblock update.
However the first sb location is a bit more complicated than the rest
so we have to account for that.
The superblock modification is created generic enough so the
infrastructure can be used for other potential superblock modification
operations, such as chaning UUID.
Tested with generic/492 with various configurations. I also checked the
behavior with 'sb=' mount options, including very large file systems
with and without sparse_super/sparse_super2.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Link: https://lore.kernel.org/r/20211213135618.43303-1-lczerner@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Only set EXT4_MOUNT_QUOTA when journalled quota file is specified,
otherwise simply disabling specific quota type (usrjquota=) will also
set the EXT4_MOUNT_QUOTA super block option.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Fixes: e6e268cb6822 ("ext4: move quota configuration out of handle_mount_opt()")
Link: https://lore.kernel.org/r/20220104143518.134465-2-lczerner@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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During ext4 mount api rework the commit e6e268cb6822 ("ext4: move quota
configuration out of handle_mount_opt()") introduced a bug where we
would kfree(sbi->s_qf_names[i]) before assigning the new quota name in
ext4_apply_quota_options().
This is wrong because we're using kfree() on rcu prointer that could be
simultaneously accessed from ext4_show_quota_options() during remount.
Fix it by using rcu_replace_pointer() to replace the old qname with the
new one and then kfree_rcu() the old quota name.
Also use get_qf_name() instead of sbi->s_qf_names in strcmp() to silence
the sparse warning.
Fixes: e6e268cb6822 ("ext4: move quota configuration out of handle_mount_opt()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Link: https://lore.kernel.org/r/20220104143518.134465-1-lczerner@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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