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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Add support for Adreno 306A GPU what is found in MSM8917 SoC.
This GPU marketing name is Adreno 308.
Signed-off-by: Otto Pflüger <[email protected]>
[use internal name of the GPU, reword the commit message]
Reviewed-by: Konrad Dybcio <[email protected]>
Signed-off-by: Barnabás Czémán <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/605403/
Signed-off-by: Rob Clark <[email protected]>
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A621 is a clear A662 derivative (same lineage as A650), no explosions
or sick features, other than a NoC bug which can stall the GPU..
Add support for it.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/611100/
Signed-off-by: Rob Clark <[email protected]>
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This was apparently never done before.. Program the expected values.
This also gets rid of sneakily setting that register through the HWCG
reg list on A690.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/611098/
Signed-off-by: Rob Clark <[email protected]>
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This register's magic value differs wildly between different GPUs, use
the hardcoded data instead of trying to make some logic out of it.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/611096/
Signed-off-by: Rob Clark <[email protected]>
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Store the correct values that we happen to have for some A7xx SKUs in
the GPU info struct and fill out the missing information for A6xx GPUs
based on downstream kernel information.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/611094/
[add missing entry to a615 catalog to resolve conflict]
Signed-off-by: Rob Clark <[email protected]>
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The if-else monster is so unmaintainable that one case is repeated
twice. Get rid of it.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/611092/
[add missing entry to a615 catalog to resolve conflict]
Signed-off-by: Rob Clark <[email protected]>
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A650 family includes A660 family (they've got a big family), A650
itself, and some more A6XX_GEN3 SKUs, all of which should fall into
the same branch of the if-condition. Simplify that.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/605206/
Signed-off-by: Rob Clark <[email protected]>
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There is another cause for soft lock-up of GPU in empty ring-buffer:
race between GPU executing last commands and CPU checking ring for
emptiness. On GPU side IRQ for retire is triggered by CACHE_FLUSH_TS
event and RPTR shadow (which is used to check ring emptiness) is updated
a bit later from CP_CONTEXT_SWITCH_YIELD. Thus if GPU is executing its
last commands slow enough or we check that ring too fast we will miss a
chance to trigger switch to lower priority ring because current ring isn't
empty just yet. This can escalate to lock-up situation described in
previous patch.
To work-around this issue we keep track of last submit sequence number
for each ring and compare it with one written to memptrs from GPU during
execution of CACHE_FLUSH_TS event.
Fixes: b1fc2839d2f9 ("drm/msm: Implement preemption for A5XX targets")
Signed-off-by: Vladimir Lypak <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/612047/
Signed-off-by: Rob Clark <[email protected]>
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On A5XX GPUs when preemption is used it's invietable to enter a soft
lock-up state in which GPU is stuck at empty ring-buffer doing nothing.
This appears as full UI lockup and not detected as GPU hang (because
it's not). This happens due to not triggering preemption when it was
needed. Sometimes this state can be recovered by some new submit but
generally it won't happen because applications are waiting for old
submits to retire.
One of the reasons why this happens is a race between a5xx_submit and
a5xx_preempt_trigger called from IRQ during submit retire. Former thread
updates ring->cur of previously empty and not current ring right after
latter checks it for emptiness. Then both threads can just exit because
for first one preempt_state wasn't NONE yet and for second one all rings
appeared to be empty.
To prevent such situations from happening we need to establish guarantee
for preempt_trigger to make decision after each submit or retire. To
implement this we serialize preemption initiation using spinlock. If
switch is already in progress we need to re-trigger preemption when it
finishes.
Fixes: b1fc2839d2f9 ("drm/msm: Implement preemption for A5XX targets")
Signed-off-by: Vladimir Lypak <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/612045/
Signed-off-by: Rob Clark <[email protected]>
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Two fields of preempt_record which are used by CP aren't reset on
resume: "data" and "info". This is the reason behind faults which happen
when we try to switch to the ring that was active last before suspend.
In addition those faults can't be recovered from because we use suspend
and resume to do so (keeping values of those fields again).
Fixes: b1fc2839d2f9 ("drm/msm: Implement preemption for A5XX targets")
Signed-off-by: Vladimir Lypak <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/612043/
Signed-off-by: Rob Clark <[email protected]>
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Fine grain preemption (switching from/to points within submits)
requires extra handling in command stream of those submits, especially
when rendering with tiling (using GMEM). However this handling is
missing at this point in mesa (and always was). For this reason we get
random GPU faults and hangs if more than one priority level is used
because local preemption is enabled prior to executing command stream
from submit.
With that said it was ahead of time to enable local preemption by
default considering the fact that even on downstream kernel it is only
enabled if requested via UAPI.
Fixes: a7a4c19c36de ("drm/msm/a5xx: fix setting of the CP_PREEMPT_ENABLE_LOCAL register")
Signed-off-by: Vladimir Lypak <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/612041/
Signed-off-by: Rob Clark <[email protected]>
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There are some cases, such as the one uncovered by Commit 46d4efcccc68
("drm/msm/a6xx: Avoid a nullptr dereference when speedbin setting fails")
where
msm_gpu_cleanup() : platform_set_drvdata(gpu->pdev, NULL);
is called on gpu->pdev == NULL, as the GPU device has not been fully
initialized yet.
Turns out that there's more than just the aforementioned path that
causes this to happen (e.g. the case when there's speedbin data in the
catalog, but opp-supported-hw is missing in DT).
Assigning msm_gpu->pdev earlier seems like the least painful solution
to this, therefore do so.
Signed-off-by: Konrad Dybcio <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/602742/
Signed-off-by: Rob Clark <[email protected]>
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nfsd_pool_stats_open() is used in nfsctl.c, so move it there.
Signed-off-by: NeilBrown <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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Various functions are only used within the sunrpc module, and several
are only use in the one file. So clean up:
These are marked static, and any EXPORT is removed.
svc_rcpb_setup()
svc_rqst_alloc()
svc_rqst_free() - also moved before first use
svc_rpcbind_set_version()
svc_drop() - also moved to svc.c
These are now not EXPORTed, but are not static.
svc_authenticate()
svc_sock_update_bufs()
Signed-off-by: NeilBrown <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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nlmsvc_timeout always has the same value as (nlm_timeout * HZ), so use
that in the one place that nlmsvc_timeout is used.
In truth it *might* not always be the same as nlmsvc_timeout is only set
when lockd is started while nlm_timeout can be set at anytime via
sysctl. I think this difference it not helpful so removing it is good.
Also remove the test for nlm_timout being 0. This is not possible -
unless a module parameter is used to set the minimum timeout to 0, and
if that happens then it probably should be honoured.
Signed-off-by: NeilBrown <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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nfsd4_ssc_init_umount_work() is only used in the nfsd module, so there
is no need to EXPORT it.
Signed-off-by: NeilBrown <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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__nfs_revalidate_inode may return ETIMEDOUT.
print symbol of ETIMEDOUT in nfs trace:
before:
cat-5191 [005] 119.331127: nfs_revalidate_inode_exit: error=-110 (0x6e)
after:
cat-1738 [004] 44.365509: nfs_revalidate_inode_exit: error=-110 (TIMEDOUT)
Signed-off-by: Chen Hanxiao <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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After many rounds of changes in filecache.c, the fix by commit
ce7df055(NFSD: Make the file_delayed_close workqueue UNBOUND)
is gone, now we are getting syslog messages like these:
[ 1618.186688] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 4 times, consider switching to WQ_UNBOUND
[ 1638.661616] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 8 times, consider switching to WQ_UNBOUND
[ 1665.284542] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 16 times, consider switching to WQ_UNBOUND
[ 1759.491342] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 32 times, consider switching to WQ_UNBOUND
[ 3013.012308] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 64 times, consider switching to WQ_UNBOUND
[ 3154.172827] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 128 times, consider switching to WQ_UNBOUND
[ 3422.461924] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 256 times, consider switching to WQ_UNBOUND
[ 3963.152054] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 512 times, consider switching to WQ_UNBOUND
Consider use system_unbound_wq instead of system_wq for
nfsd_file_gc_worker().
Signed-off-by: Youzhong Yang <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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We already count the frees (via nfsd_file_releases). Count the
allocations as well. Also switch the direct call to nfsd_file_slab_free
in nfsd_file_do_acquire to nfsd_file_free, so that the allocs and
releases match up.
Signed-off-by: Jeff Layton <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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If we wait_for_construction and find that the file is no longer hashed,
and we're going to retry the open, the old nfsd_file reference is
currently leaked. Put the reference before retrying.
Fixes: c6593366c0bf ("nfsd: don't kill nfsd_files because of lease break error")
Signed-off-by: Jeff Layton <[email protected]>
Tested-by: Youzhong Yang <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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Given that we do the search and insertion while holding the i_lock, I
don't think it's possible for us to get EEXIST here. Remove this case.
Fixes: c6593366c0bf ("nfsd: don't kill nfsd_files because of lease break error")
Signed-off-by: Jeff Layton <[email protected]>
Tested-by: Youzhong Yang <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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nfsd_file_put() in one thread can race with another thread doing
garbage collection (running nfsd_file_gc() -> list_lru_walk() ->
nfsd_file_lru_cb()):
* In nfsd_file_put(), nf->nf_ref is 1, so it tries to do nfsd_file_lru_add().
* nfsd_file_lru_add() returns true (with NFSD_FILE_REFERENCED bit set)
* garbage collector kicks in, nfsd_file_lru_cb() clears REFERENCED bit and
returns LRU_ROTATE.
* garbage collector kicks in again, nfsd_file_lru_cb() now decrements nf->nf_ref
to 0, runs nfsd_file_unhash(), removes it from the LRU and adds to the dispose
list [list_lru_isolate_move(lru, &nf->nf_lru, head)]
* nfsd_file_put() detects NFSD_FILE_HASHED bit is cleared, so it tries to remove
the 'nf' from the LRU [if (!nfsd_file_lru_remove(nf))]. The 'nf' has been added
to the 'dispose' list by nfsd_file_lru_cb(), so nfsd_file_lru_remove(nf) simply
treats it as part of the LRU and removes it, which leads to its removal from
the 'dispose' list.
* At this moment, 'nf' is unhashed with its nf_ref being 0, and not on the LRU.
nfsd_file_put() continues its execution [if (refcount_dec_and_test(&nf->nf_ref))],
as nf->nf_ref is already 0, nf->nf_ref is set to REFCOUNT_SATURATED, and the 'nf'
gets no chance of being freed.
nfsd_file_put() can also race with nfsd_file_cond_queue():
* In nfsd_file_put(), nf->nf_ref is 1, so it tries to do nfsd_file_lru_add().
* nfsd_file_lru_add() sets REFERENCED bit and returns true.
* Some userland application runs 'exportfs -f' or something like that, which triggers
__nfsd_file_cache_purge() -> nfsd_file_cond_queue().
* In nfsd_file_cond_queue(), it runs [if (!nfsd_file_unhash(nf))], unhash is done
successfully.
* nfsd_file_cond_queue() runs [if (!nfsd_file_get(nf))], now nf->nf_ref goes to 2.
* nfsd_file_cond_queue() runs [if (nfsd_file_lru_remove(nf))], it succeeds.
* nfsd_file_cond_queue() runs [if (refcount_sub_and_test(decrement, &nf->nf_ref))]
(with "decrement" being 2), so the nf->nf_ref goes to 0, the 'nf' is added to the
dispose list [list_add(&nf->nf_lru, dispose)]
* nfsd_file_put() detects NFSD_FILE_HASHED bit is cleared, so it tries to remove
the 'nf' from the LRU [if (!nfsd_file_lru_remove(nf))], although the 'nf' is not
in the LRU, but it is linked in the 'dispose' list, nfsd_file_lru_remove() simply
treats it as part of the LRU and removes it. This leads to its removal from
the 'dispose' list!
* Now nf->ref is 0, unhashed. nfsd_file_put() continues its execution and set
nf->nf_ref to REFCOUNT_SATURATED.
As shown in the above analysis, using nf_lru for both the LRU list and dispose list
can cause the leaks. This patch adds a new list_head nf_gc in struct nfsd_file, and uses
it for the dispose list. This does not fix the nfsd_file leaking issue completely.
Signed-off-by: Youzhong Yang <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>
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The previous replacement from simple_strtoul() to kstrtoul() forgot
that the passed pointer must be an unsigned long int pointer, while
the value used there is a sized_t pointer. Fix it.
Fixes: 61bc4deff033 ("ALSA: pcm: replace simple_strtoul to kstrtoul")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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In the LTC2991, V5 and V6 channels use the low nibble of the
"V5, V6, V7, and V8 Control Register" for configuration, but currently,
the high nibble is defined.
This patch changes the defines to use the low nibble.
Fixes: 2b9ea4262ae9 ("hwmon: Add driver for ltc2991")
Signed-off-by: Pawel Dembicki <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
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Commit 5ce2176b81f7 ("genksyms: adjust the output format to modpost")
stopped generating *.symversions files.
Remove the left-over from the .gitignore file and the 'clean' rule.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
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With commit cda5f94e88b4 ("modpost: avoid using the alias attribute"),
only two log levels remain: LOG_WARN and LOG_ERROR. Simplify this by
making it a boolean variable.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
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objtree is defined and exported by the top-level Makefile. I prefer
not to override it.
There is no need to pass the absolute path of objtree. PKGBUILD can
detect it by itself.
Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Thomas Weißschuh <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Reviewed-by: Christian Heusel <[email protected]>
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All build and package functions share the following commands:
export MAKEFLAGS="${KBUILD_MAKEFLAGS}"
cd "${objtree}"
Factor out the common code.
Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Thomas Weißschuh <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Reviewed-by: Christian Heusel <[email protected]>
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Introduce the PACMAN_EXTRAPACKAGES variable in PKGBUILD to allow users
to specify which additional packages are built by the pacman-pkg target.
Previously, the api-headers package was always included, and the headers
package was included only if CONFIG_MODULES=y. With this change, both
headers and api-headers packages are included by default. Users can now
control this behavior by setting PACMAN_EXTRAPACKAGES to a
space-separated list of desired extra packages or leaving it empty to
exclude all.
For example, to build only the base package without extras:
make pacman-pkg PACMAN_EXTRAPACKAGES=""
Signed-off-by: Jose Fernandez <[email protected]>
Reviewed-by: Peter Jung <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Tested-by: Nathan Chancellor <[email protected]>
Reviewed-by: Christian Heusel <[email protected]>
Tested-by: Christian Heusel <[email protected]>
Acked-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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This commit improves the section mismatch warning format when there is
no suitable symbol name to print.
The section mismatch warning prints the reference source in the form
of <symbol_name>+<offset> and the reference destination in the form
of <symbol_name>.
However, there are some corner cases where <symbol_name> becomes
"(unknown)", as reported in commit 23dfd914d2bf ("modpost: fix null
pointer dereference").
In such cases, it is better to print the symbol address.
Signed-off-by: Masahiro Yamada <[email protected]>
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When malloc() fails, there is not much userspace programs can do.
xmalloc() is useful to bail out on a memory allocation failure.
Signed-off-by: Masahiro Yamada <[email protected]>
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When malloc() or realloc() fails, there is not much userspace programs
can do. xmalloc() and xrealloc() are useful to bail out on a memory
allocation failure.
Signed-off-by: Masahiro Yamada <[email protected]>
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I think x*alloc() functions are cleaner.
Signed-off-by: Masahiro Yamada <[email protected]>
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