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Several people reported C++ compilation errors due to things that C
compilers allow but C++ compilers do not. Fix both of these problems,
and hope there aren't more of these brown paper bags in 2 months when we
finally get these fixes through the process into a released xfsprogs.
NOTE: I am submitting this bugfix over the objections of a former
maintainer, who insists that we should remove this function from the
published userspace ABI instead of fixing the C++ compilation errors.
No deprecation period, no discussion, just a hard drop of an already
provided and correct C function, which would be in contravention of
Linus' rules. IOWs, removing ABI that have already shipped in a
released kernel requires a careful deprecation period, so I will let
that maintainer run that process.
Reported-by: [email protected]
Reported-by: [email protected]
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219203
Fixes: 233f4e12bbb2c ("xfs: add parent pointer ioctls")
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Create a helper function to load quota inodes in the case where the
dqtype and the sb quota inode fields correspond. This is true for
nearly all the iget callsites in the quota code, except for when we're
switching the group and project quota inodes. We'll need this in
subsequent patches to make the metadir handling less convoluted.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Move this function out of xfs_ioctl.c to reduce the clutter in there,
and make the entire getfsmap implementation self-contained in a single
file.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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The order of the functions in this file has gotten a little confusing
over the years. Specifically, the two data device implementations
(bnobt and rmapbt) could be adjacent in the source code instead of split
in two by the logdev and rtdev fsmap implementations. We're about to
add more functionality to this file, so rearrange things now.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Track the RT summary file size in blocks, just like the RT bitmap
file. While we have users of both units, blocks are used slightly
more often and this matches the bitmap file for consistency.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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xfs_rtbitmap_wordcount and xfs_rtsummary_wordcount are currently unused,
so remove them to simplify refactoring other rtbitmap helpers. They
can be added back or simply open coded when actually needed.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Add common helpers for no-op scrubbing methods.
Signed-off-by: Darrick J. Wong <[email protected]>
[hch: split from a larger patch]
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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0 is a valid start RT extent, and with pending changes it will become
both more common and non-unique. Switch to pass a xfs_rtblock_t instead
so that we can use NULLRTBLOCK to determine if a hint was set or not.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Split the code to calculate the aligned allocation request from
xfs_bmap_rtalloc into a separate self-contained helper.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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xfs_rtallocate currently has two fallbacks, when an allocation fails:
1) drop the requested extent size alignment, if any, and retry
2) ignore the locality hint
Oddly enough it does those in order, as trying a different location
is more in line with what the user asked for, and does it in a very
unstructured way.
Lift the fallback to try to allocate without the locality hint into
xfs_rtallocate to both perform them in a more sensible order and to
clean up the code.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Split out a helper from xfs_rtallocate that performs the actual
allocation. This keeps the scope of the xfs_rtalloc_args structure
contained, and prepares for rtgroups support.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Turn the ISVALID macro defined and used inside in xfs_bmap_adjacent
that relies on implict context into a proper inline function.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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There isn't much of a good reason to pass the xfs_rtalloc_rec structures
that describe extents to xfs_rtalloc_query_range as we really just want
a lower and upper bound xfs_rtxnum_t. Pass the rtxnum directly and
simply the interface.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Simplify the number of block number conversion helpers by removing
xfs_rtb_to_rtxrem. Any recent compiler is smart enough to eliminate
the double divisions if using separate xfs_rtb_to_rtx and
xfs_rtb_to_rtxoff calls.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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xfs_rtallocate_extent_block
This function tries to find a suitable free space extent starting from
a particular rtbitmap block. Some time ago, I added a clamping function
to prevent the free space scans from running off the end of the bitmap,
but I didn't quite get the logic right.
Let's say there's an allocation request with a minlen of 5 and a maxlen
of 32 and we're scanning the last rtbitmap block. If we come within 4
rtx of the end of the rt volume, maxlen will get clamped to 4. If the
next 3 rtx are free, we could have satisfied the allocation, but the
code setting partial besti/bestlen for "minlen < maxlen" will think that
we're doing a non-variable allocation and ignore it.
The root of this problem is overwriting maxlen; I should have stuffed
the results in a different variable, which would not have introduced
this bug.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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The near rt allocator employs two allocation strategies -- first it
tries to allocate at exactly @start. If that fails, it will pivot back
and forth around that starting point looking for an appropriately sized
free space.
However, I clamped maxlen ages ago to prevent the exact allocation scan
from running off the end of the rt volume. This, I realize, was
excessive. If the allocation request is (say) for 32 rtx but the start
position is 5 rtx from the end of the volume, we clamp maxlen to 5. If
the exact allocation fails, we then pivot back and forth looking for 5
rtx, even though the original intent was to try to get 32 rtx.
If we then find 5 rtx when we could have gotten 32 rtx, we've not done
as well as we could have. This may be moot if the caller immediately
comes back for more space, but it might not be. Either way, we can do
better here.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Before we start doing more surgery on the rt allocator, let's clean up
the exact allocator so that it doesn't change its arguments and uses the
helper introduced in the previous patch.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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There are two places in xfs_rtalloc.c where we want to make sure that a
count of rt extents is aligned with a particular prod(uct) factor. In
one spot, we actually use rounddown(), albeit unnecessarily if prod < 2.
In the other case, we open-code this rounding inefficiently by promoting
the 32-bit length value to a 64-bit value and then performing a 64-bit
division to figure out the subtraction.
Refactor this into a single helper that uses the correct types and
division method for the type, and skips the division entirely unless
prod is large enough to make a difference.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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The loop conditional here is not quite correct because an rtbitmap block
can represent rtextents beyond the end of the rt volume. There's no way
that it makes sense to scan for free space beyond EOFS, so don't do it.
This overrun has been present since v2.6.0.
Also fix the type of bestlen, which was incorrectly converted.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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If xfs_rtallocate_extent_block is asked for a variable-sized allocation,
it will try to return the best-sized free extent, which is apparently
the largest one that it finds starting in this rtbitmap block. It will
then trim the size of the extent as needed to align it with prod.
However, it misses one thing -- rounding down the best-fit candidate to
the required alignment could make the extent shorter than minlen. In
the case where minlen > 1, we'd rather the caller relaxed its alignment
requirements and tried again, as the allocator already supports that.
Returning a too-short extent that causes xfs_bmapi_write to return
ENOSR if there aren't enough nmaps to handle multiple new allocations,
which can then cause filesystem shutdowns.
I haven't seen this happen on any production systems, but then I don't
think it's very common to set a per-file extent size hint on realtime
files. I tripped it while working on the rtgroups feature and pounding
on the realtime allocator enthusiastically.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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When growfs sets an extent size, it doesn't updated the m_rtxblklog and
m_rtxblkmask values, which could lead to incorrect usage of them if they
were set before and can't be used for the new extent size.
Add a xfs_mount_sb_set_rextsize helper that updates the two fields, and
also use it when calculating the new RT geometry instead of disabling
the optimization there.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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After going great length to calculate the transaction reservation for
the new geometry, we should also use it to allocate the transaction it
was calculated for.
Fixes: 578bd4ce7100 ("xfs: recompute growfsrtfree transaction reservation while growing rt volume")
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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To prepare for being able to join an already locked rtbitmap inode to a
transaction split out separate helpers for joining the transaction from
the locking helpers.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Add helpers to libxfs that can be shared by growfs and mkfs for
initializing the rtbitmap and summary, and by passing the optional data
pointer also by repair for rebuilding them. This will become even more
useful when the rtgroups feature adds a metadata header to each block,
which means even more shared code.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
[djwong: minor documentation and data advance tweaks]
Signed-off-by: Darrick J. Wong <[email protected]>
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Add helper to calculate the last currently used rt bitmap block to
better structure the growfs code and prepare for future changes to it.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Add a helper to contain the per-rtbitmap block logic in xfs_growfs_rt.
Note that this helper now allocates a new fake mount structure for
each rtbitmap block iteration instead of reusing the memory for an
entire growfs call. Compared to all the other work done when freeing
the blocks the overhead for this is in the noise and it keeps the code
nicely modular.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Currently the various low-level RT allocator functions call into
xfs_rtallocate_range directly, which ties them into the locking protocol
for the RT bitmap. As these helpers already return the allocated range,
lift the call to xfs_rtallocate_range into xfs_bmap_rtalloc so that it
happens as high as possible in the stack, which will simplify future
changes to the locking protocol.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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xfs_rtpick_extent never returns an error. Do away with the error return
and directly return the picked extent instead of doing that through a
call by reference argument.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Add a corruption check for passing an invalid block number, which is a
lot easier to understand than the xfs_bmapi_read failure later on.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Protect against developers passing stupid limits when refactoring the
RT code once again.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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All callers pass a 0 limit to xfs_rtfind_back, so remove the argument
and hard code it.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Currently the RT mount code simply ignores an allocation failure for the
rsum_cache. The code mostly works fine with it, but not having it leads
to nasty corner cases in the growfs code that we don't really handle
well. Switch to failing the mount if we can't allocate the memory, the
file system would not exactly be useful in such a constrained environment
to start with.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Split the RT geometry validation in the early mount code into a
helper than can be reused by repair (from which this code was
apparently originally stolen anyway).
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
[djwong: u64 return value for calc_rbmblocks]
Signed-off-by: Darrick J. Wong <[email protected]>
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Replace xfs_validate_rtextents with an open coded check for 0
rtextents. The name for the function implies it does a lot more
than a zero check, which is more obvious when open coded.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
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Pass the xfs_icreate_args object to xfs_dialloc since we can extract the
relevant mode (really just the file type) and parent inumber from there.
This simplifies the calling convention in preparation for the next
patch.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Match the inode number instead of the inode pointers, as the inode
pointers in the superblock will go away soon.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
[djwong: port to my tree, make the parameter a const pointer]
Signed-off-by: Darrick J. Wong <[email protected]>
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Actually use the inumber validator to check the argument passed in here.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Dave Chinner <[email protected]>
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This patch introduces two more new ioctls to manage atomic updates to
file contents -- XFS_IOC_START_COMMIT and XFS_IOC_COMMIT_RANGE. The
commit mechanism here is exactly the same as what XFS_IOC_EXCHANGE_RANGE
does, but with the additional requirement that file2 cannot have changed
since some sampling point. The start-commit ioctl performs the sampling
of file attributes.
Note: This patch currently samples i_ctime during START_COMMIT and
checks that it hasn't changed during COMMIT_RANGE. This isn't entirely
safe in kernels prior to 6.12 because ctime only had coarse grained
granularity and very fast updates could collide with a COMMIT_RANGE.
With the multi-granularity ctime introduced by Jeff Layton, it's now
possible to update ctime such that this does not happen.
It is critical, then, that this patch must not be backported to any
kernel that does not support fine-grained file change timestamps.
Signed-off-by: Darrick J. Wong <[email protected]>
Acked-by: Jeff Layton <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Pull smb client fixes from Steve French:
- copy_file_range fix
- two read fixes including read past end of file rc fix and read retry
crediting fix
- falloc zero range fix
* tag 'v6.11-rc5-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix FALLOC_FL_ZERO_RANGE to preflush buffered part of target region
cifs: Fix copy offload to flush destination region
netfs, cifs: Fix handling of short DIO read
cifs: Fix lack of credit renegotiation on read retry
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Push bcachefs fixes from Kent Overstreet:
"The data corruption in the buffered write path is troubling; inode
lock should not have been able to cause that...
- Fix a rare data corruption in the rebalance path, caught as a nonce
inconsistency on encrypted filesystems
- Revert lockless buffered write path
- Mark more errors as autofix"
* tag 'bcachefs-2024-08-21' of https://github.com/koverstreet/bcachefs:
bcachefs: Mark more errors as autofix
bcachefs: Revert lockless buffered IO path
bcachefs: Fix bch2_extents_match() false positive
bcachefs: Fix failure to return error in data_update_index_update()
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errors that are known to always be safe to fix should be autofix: this
should be most errors even at this point, but that will need some
thorough review.
note that errors are still logged in the superblock, so we'll still know
that they happened.
Signed-off-by: Kent Overstreet <[email protected]>
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We had a report of data corruption on nixos when building installer
images.
https://github.com/NixOS/nixpkgs/pull/321055#issuecomment-2184131334
It seems that writes are being dropped, but only when issued by QEMU,
and possibly only in snapshot mode. It's undetermined if it's write
calls are being dropped or dirty folios.
Further testing, via minimizing the original patch to just the change
that skips the inode lock on non appends/truncates, reveals that it
really is just not taking the inode lock that causes the corruption: it
has nothing to do with the other logic changes for preserving write
atomicity in corner cases.
It's also kernel config dependent: it doesn't reproduce with the minimal
kernel config that ktest uses, but it does reproduce with nixos's distro
config. Bisection the kernel config initially pointer the finger at page
migration or compaction, but it appears that was erroneous; we haven't
yet determined what kernel config option actually triggers it.
Sadly it appears this will have to be reverted since we're getting too
close to release and my plate is full, but we'd _really_ like to fully
debug it.
My suspicion is that this patch is exposing a preexisting bug - the
inode lock actually covers very little in IO paths, and we have a
different lock (the pagecache add lock) that guards against races with
truncate here.
Fixes: 7e64c86cdc6c ("bcachefs: Buffered write path now can avoid the inode lock")
Signed-off-by: Kent Overstreet <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull misc fixes from Guenter Roeck.
These are fixes for regressions that Guenther has been reporting, and
the maintainers haven't picked up and sent in. With rc6 fairly imminent,
I'm taking them directly from Guenter.
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
apparmor: fix policy_unpack_test on big endian systems
Revert "MIPS: csrc-r4k: Apply verification clocksource flags"
microblaze: don't treat zero reserved memory regions as error
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull power sequencing fix from Bartosz Golaszewski:
"A follow-up fix for the power sequencing subsystem. It turned out the
previous fix for this driver was incomplete and broke the WLAN support
on some platforms. This addresses the issue.
- set the direction of the wlan-enable GPIO to output after
requesting it as-is"
* tag 'pwrseq-fixes-for-v6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
power: sequencing: qcom-wcn: set the wlan-enable GPIO to output
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Commit a9aaf1ff88a8 ("power: sequencing: request the WLAN enable GPIO
as-is") broke WLAN on boards on which the wlan-enable GPIO enabling the
wifi module isn't in output mode by default. We need to set direction to
output while retaining the value that was already set to keep the ath
module on if it's already started.
Fixes: a9aaf1ff88a8 ("power: sequencing: request the WLAN enable GPIO as-is")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes for 6.11-rc6. Included in here are:
- dwc3 driver fixes for reported issues
- MAINTAINER file update, marking a driver as unsupported :(
- cdnsp driver fixes
- USB gadget driver fix
- USB sysfs fix
- other tiny fixes
- new device ids for usb serial driver
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: option: add MeiG Smart SRM825L
usb: cdnsp: fix for Link TRB with TC
usb: dwc3: st: add missing depopulate in probe error path
usb: dwc3: st: fix probed platform device ref count on probe error path
usb: dwc3: ep0: Don't reset resource alloc flag (including ep0)
usb: core: sysfs: Unmerge @usb3_hardware_lpm_attr_group in remove_power_attributes()
usb: typec: fsa4480: Relax CHIP_ID check
usb: dwc3: xilinx: add missing depopulate in probe error path
usb: dwc3: omap: add missing depopulate in probe error path
dt-bindings: usb: microchip,usb2514: Fix reference USB device schema
usb: gadget: uvc: queue pump work in uvcg_video_enable()
cdc-acm: Add DISABLE_ECHO quirk for GE HealthCare UI Controller
usb: cdnsp: fix incorrect index in cdnsp_get_hw_deq function
usb: dwc3: core: Prevent USB core invalid event buffer address access
MAINTAINERS: Mark UVC gadget driver as orphan
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Minor fixes only.
The sd.c one ignores a sync cache request if format is in progress
which can happen if formatting a drive across suspend/resume"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: sd: Ignore command SYNCHRONIZE CACHE error if format in progress
scsi: aacraid: Fix double-free on probe failure
scsi: lpfc: Fix overflow build issue
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git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fix from Chuck Lever:
- One more write delegation fix
* tag 'nfsd-6.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease
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Pull xfs fixes from Chandan Babu:
- Do not call out v1 inodes with non-zero di_nlink field as being
corrupt
- Change xfs_finobt_count_blocks() to count "free inode btree" blocks
rather than "inode btree" blocks
- Don't report the number of trimmed bytes via FITRIM because the
underlying storage isn't required to do anything and failed discard
IOs aren't reported to the caller anyway
- Fix incorrect setting of rm_owner field in an rmap query
- Report missing disk offset range in an fsmap query
- Obtain m_growlock when extending realtime section of the filesystem
- Reset rootdir extent size hint after extending realtime section of
the filesystem
* tag 'xfs-6.11-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: reset rootdir extent size hint after growfsrt
xfs: take m_growlock when running growfsrt
xfs: Fix missing interval for missing_owner in xfs fsmap
xfs: use XFS_BUF_DADDR_NULL for daddrs in getfsmap code
xfs: Fix the owner setting issue for rmap query in xfs fsmap
xfs: don't bother reporting blocks trimmed via FITRIM
xfs: xfs_finobt_count_blocks() walks the wrong btree
xfs: fix folio dirtying for XFILE_ALLOC callers
xfs: fix di_onlink checking for V1/V2 inodes
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