Fold lru_rotate into cpu_fbatches, and rename the folio_batch and the lock
protecting it to lru_move_tail and lock_irq respectively so that all the
boilerplate can be removed at the end of this series.
Also remove data_race() around folio_batch_count(), which is out of place:
all folio_batch_count() calls on remote cpu_fbatches are subject to
data_race(), and therefore data_race() should be inside
folio_batch_count().
Link: https://lkml.kernel.org/r/20240711021317.596178-4-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Rename cpu_fbatches->activate to cpu_fbatches->lru_activate, and its
handler folio_activate_fn() to lru_activate() so that all the boilerplate
can be removed at the end of this series.
Link: https://lkml.kernel.org/r/20240711021317.596178-3-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "mm/swap: remove boilerplate".
This patch (of 5):
Use folio_activate() as an example:
Before this series
------------------
if (!folio_test_active(folio) && !folio_test_unevictable(folio)) {
struct folio_batch *fbatch;
folio_get(folio);
if (!folio_test_clear_lru(folio)) {
folio_put(folio);
return;
}
local_lock(&cpu_fbatches.lock);
fbatch = this_cpu_ptr(&cpu_fbatches.activate);
folio_batch_add_and_move(fbatch, folio, folio_activate_fn);
local_unlock(&cpu_fbatches.lock);
}
}
After this series
-----------------
void folio_activate(struct folio *folio)
{
if (folio_test_active(folio) || folio_test_unevictable(folio))
return;
folio_batch_add_and_move(folio, lru_activate, true);
}
And this is applied to all 6 folio_batch handlers in mm/swap.c.
bloat-o-meter
-------------
add/remove: 12/13 grow/shrink: 3/2 up/down: 4653/-4721 (-68)
...
Total: Before=28083019, After=28082951, chg -0.00%
This patch (of 5):
Reduce indentation level by returning directly when there is no cleanup
needed, i.e.,
if (condition) { | if (condition) {
do_this(); | do_this();
return; | return;
} else { | }
do_that(); |
} | do_that();
and
if (condition) { | if (!condition)
do_this(); | return;
do_that(); |
} | do_this();
return; | do_that();
Presumably the old style became repetitive as the result of copy and
paste.
Link: https://lkml.kernel.org/r/20240711021317.596178-1-yuzhao@google.com
Link: https://lkml.kernel.org/r/20240711021317.596178-2-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
memory tiering can be enabled/disabled at runtime and
sysctl_numa_balancing_mode & NUMA_BALANCING_MEMORY_TIERING is used to
check it. In migrate_misplaced_folio(), the check is missing when
PGPROMOTE_SUCCESS is incremented. Add the missing check.
Link: https://lkml.kernel.org/r/20240724130115.793641-4-ziy@nvidia.com
Fixes: 33024536ba ("memory tiering: hot page selection with hint page fault latency")
Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Closes: https://lore.kernel.org/linux-mm/f4ae2c9c-fe40-4807-bdb2-64cf2d716c1a@huawei.com/
Signed-off-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
If memory tiering mode is on and a folio is not in the top tier memory,
folio's cpupid field is repurposed to store page access time. Instead of
an open coded check, use a function to encapsulate the check.
Link: https://lkml.kernel.org/r/20240724130115.793641-3-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "Various memory tiering fixes", v3.
This patch (of 3):
last_cpupid is only available when memory tiering is off or the folio is
in toptier node. Complete the check to read last_cpupid when it is
available.
Before the fix, the default last_cpupid will be used even if memory
tiering mode is turned off at runtime instead of the actual value. This
can prevent task_numa_fault() from getting right numa fault stats, but
should not cause any crash. User might see performance changes after the
fix.
Link: https://lkml.kernel.org/r/20240724130115.793641-1-ziy@nvidia.com
Link: https://lkml.kernel.org/r/20240724130115.793641-2-ziy@nvidia.com
Fixes: 33024536ba ("memory tiering: hot page selection with hint page fault latency")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reported-by: David Hildenbrand <david@redhat.com>
Closes: https://lore.kernel.org/linux-mm/9af34a6b-ca56-4a64-8aa6-ade65f109288@redhat.com/
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Extend a usage parameter so that cluster_swap_free_nr() can be reused by
both swapcache_clear() and swap_free(). __swap_entry_free() is quite
similar but more tricky as it requires the return value of
__swap_entry_free_locked() which cluster_swap_free_nr() doesn't support.
Link: https://lkml.kernel.org/r/20240724020056.65838-1-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Chris Li <chrisl@kernel.org>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Chuanhua Han <hanchuanhua@oppo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
There is no user of mem_cgroup_from_obj(), remove it.
Link: https://lkml.kernel.org/r/20240718091821.44740-1-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Now that we're not passing around a pointer to the flags, there's no
reason to have an extra variable for the gup_flags, simply pass the
gup_flags directly everywhere.
Link: https://lkml.kernel.org/r/1e79b84bd30287cc9847f2aeb002374e6e60a10f.1721337845.git.josef@toxicpanda.com
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Acked-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "mm: some small page fault cleanups".
I was recently wreaking havoc in the page fault code and I noticed some
things that could be cleaned up. We no longer modify the gup flags in
faultin_page, so we can clean up how we pass the flags in and remove the
extra variable in __get_user_pages.
This patch (of 2):
We're passing a pointer to the foll_flags for faultin_page, however we
never modify the flags in this call. Change this to just take the flags
value instead.
Link: https://lkml.kernel.org/r/2df51a54c06bdf93e1cb09a19a9ef1df6557b59e.1721337845.git.josef@toxicpanda.com
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Acked-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
When KASAN is enabled and built with clang:
mm/damon/lru_sort.c:199:12: error: stack frame size (2328) exceeds
limit (2048) in 'damon_lru_sort_apply_parameters' [-Werror,-Wframe-larger-than]
static int damon_lru_sort_apply_parameters(void)
^
1 error generated.
This is because damon_lru_sort_quota contains a large array, and
assigning this variable to a local variable causes a large amount of
stack space to be occupied.
So adjust local variable to dynamic allocation.
Link: https://lkml.kernel.org/r/20240723035513.20153-1-flyingpeng@tencent.com
Signed-off-by: Peng Hao <flyingpeng@tencent.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
hugetlb_vmemmap_optimize_folio() and hugetlb_vmemmap_restore_folio() are
wrappers meant to be called regardless of whether HVO is enabled.
Therefore, they should not call synchronize_rcu(). Otherwise, it
regresses use cases not enabling HVO.
So move synchronize_rcu() to __hugetlb_vmemmap_optimize_folio() and
__hugetlb_vmemmap_restore_folio(), and call it once for each batch of
folios when HVO is enabled.
Link: https://lkml.kernel.org/r/20240719042503.2752316-1-yuzhao@google.com
Fixes: bd225530a4 ("mm/hugetlb_vmemmap: fix race with speculative PFN walkers")
Signed-off-by: Yu Zhao <yuzhao@google.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202407091001.1250ad4a-oliver.sang@intel.com
Reported-by: Janosch Frank <frankja@linux.ibm.com>
Tested-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Acked-by: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Initially I added shmem-quota to obj-y, move it to the correct place and
remove the unneeded full file #ifdef
Link: https://lkml.kernel.org/r/20240717063737.910840-1-cem@kernel.org
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Suggested-by: Aristeu Rozanski <aris@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Fix typo in Kconfig help
Link: https://lkml.kernel.org/r/78656.1720853990@turing-police
Fixes: e93d4166b4 ("mm: memcg: put cgroup v1-specific code under a config option")
Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Move shmem_huge_global_enabled() into shmem_allowable_huge_orders(), so
that shmem_allowable_huge_orders() can also help to find the allowable
huge orders for tmpfs. Moreover the shmem_huge_global_enabled() can
become static. While we are at it, passing the vma instead of mm for
shmem_huge_global_enabled() makes code cleaner.
No functional changes.
Link: https://lkml.kernel.org/r/8e825146bb29ee1a1c7bd64d2968ff3e19be7815.1721626645.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Barry Song <21cnbao@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
shmem_is_huge() is now used to check if the top-level huge page is
enabled, thus rename it to reflect its usage.
Link: https://lkml.kernel.org/r/da53296e0ab6359aa083561d9dc01e4223d60fbe.1721626645.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Barry Song <21cnbao@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "Some cleanups for shmem", v3.
This series does some cleanups to reuse code, rename functions and
simplify logic to make code more clear. No functional changes are
expected.
This patch (of 3):
Move the suitable huge orders validation into shmem_suitable_orders() for
tmpfs, which can reuse some code to simplify the logic.
In addition, we don't have special handling for the error code -E2BIG when
checking for conflicts with PMD sized THP in the pagecache for tmpfs,
instead, it will just fallback to order-0 allocations like this patch
does, so this simplification will not add functional changes.
Link: https://lkml.kernel.org/r/cover.1721626645.git.baolin.wang@linux.alibaba.com
Link: https://lkml.kernel.org/r/965985dd6d322929d78a0beee0dafa1c2a1b81e2.1721626645.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Barry Song <21cnbao@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Besides the obvious (and desired) difference between krealloc() and
kvrealloc(), there is some inconsistency in their function signatures and
behavior:
- krealloc() frees the memory when the requested size is zero, whereas
kvrealloc() simply returns a pointer to the existing allocation.
- krealloc() behaves like kmalloc() if a NULL pointer is passed, whereas
kvrealloc() does not accept a NULL pointer at all and, if passed,
would fault instead.
- krealloc() is self-contained, whereas kvrealloc() relies on the caller
to provide the size of the previous allocation.
Inconsistent behavior throughout allocation APIs is error prone, hence
make kvrealloc() behave like krealloc(), which seems superior in all
mentioned aspects.
Besides that, implementing kvrealloc() by making use of krealloc() and
vrealloc() provides oppertunities to grow (and shrink) allocations more
efficiently. For instance, vrealloc() can be optimized to allocate and
map additional pages to grow the allocation or unmap and free unused pages
to shrink the allocation.
[dakr@kernel.org: document concurrency restrictions]
Link: https://lkml.kernel.org/r/20240725125442.4957-1-dakr@kernel.org
[dakr@kernel.org: disable KASAN when switching to vmalloc]
Link: https://lkml.kernel.org/r/20240730185049.6244-2-dakr@kernel.org
[dakr@kernel.org: properly document __GFP_ZERO behavior]
Link: https://lkml.kernel.org/r/20240730185049.6244-5-dakr@kernel.org
Link: https://lkml.kernel.org/r/20240722163111.4766-3-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Chandan Babu R <chandan.babu@oracle.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "Align kvrealloc() with krealloc()", v2.
Besides the obvious (and desired) difference between krealloc() and
kvrealloc(), there is some inconsistency in their function signatures and
behavior:
- krealloc() frees the memory when the requested size is zero, whereas
kvrealloc() simply returns a pointer to the existing allocation.
- krealloc() behaves like kmalloc() if a NULL pointer is passed, whereas
kvrealloc() does not accept a NULL pointer at all and, if passed, would fault
instead.
- krealloc() is self-contained, whereas kvrealloc() relies on the caller to
provide the size of the previous allocation.
Inconsistent behavior throughout allocation APIs is error prone, hence
make kvrealloc() behave like krealloc(), which seems superior in all
mentioned aspects.
In order to be able to get rid of kvrealloc()'s oldsize parameter,
introduce vrealloc() and make use of it in kvrealloc().
Making use of vrealloc() in kvrealloc() also provides oppertunities to
grow (and shrink) allocations more efficiently. For instance, vrealloc()
can be optimized to allocate and map additional pages to grow the
allocation or unmap and free unused pages to shrink the allocation.
Besides the above, those functions are required by Rust's allocator abstractons
[1] (rework based on this series in [2]). With `Vec` or `KVec` respectively,
potentially growing (and shrinking) data structures are rather common.
[1] https://lore.kernel.org/lkml/20240704170738.3621-1-dakr@redhat.com/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/dakr/linux.git/log/?h=rust/mm
This patch (of 2):
Implement vrealloc() analogous to krealloc().
Currently, krealloc() requires the caller to pass the size of the previous
memory allocation, which, instead, should be self-contained.
We attempt to fix this in a subsequent patch which, in order to do so,
requires vrealloc().
Besides that, we need realloc() functions for kernel allocators in Rust
too. With `Vec` or `KVec` respectively, potentially growing (and
shrinking) data structures are rather common.
[dakr@kernel.org: fix missing nommu implementation]
Link: https://lkml.kernel.org/r/20240725141227.13954-1-dakr@kernel.org
[dakr@kernel.org: document concurrency restrictions]
Link: https://lkml.kernel.org/r/20240725125442.4957-1-dakr@kernel.org
[dakr@kernel.org: consider spare memory for __GFP_ZERO]
Link: https://lkml.kernel.org/r/20240730185049.6244-3-dakr@kernel.org
[dakr@kernel.org: properly document __GFP_ZERO behavior]
Link: https://lkml.kernel.org/r/20240730185049.6244-4-dakr@kernel.org
Link: https://lkml.kernel.org/r/20240722163111.4766-1-dakr@kernel.org
Link: https://lkml.kernel.org/r/20240722163111.4766-2-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Chandan Babu R <chandan.babu@oracle.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
/proc/vmstat currently shows the number of node_reclaim() failures when
vm.zone_reclaim_mode is set appropriately. It would be convenient to have
the number of successes right next to zone_reclaim_failed (similar to
compaction and migration).
While just a trivially addition to the vmstat file. It was helpful during
benchmarking to not have to probe node_reclaim() to observe the
success/failure ratio.
Link: https://lkml.kernel.org/r/20240722171316.7517-1-mcassell411@gmail.com
Signed-off-by: Matthew Cassell <mcassell411@gmail.com>
Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Li Zhijian <lizhijian@fujitsu.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Merge tag 'v6.11-rc5-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
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
- 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
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Merge tag 'bcachefs-2024-08-21' of https://github.com/koverstreet/bcachefs
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()
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 <kent.overstreet@linux.dev>
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: 7e64c86cdc ("bcachefs: Buffered write path now can avoid the inode lock")
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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
- set the direction of the wlan-enable GPIO to output after requesting
it as-is
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Merge tag 'pwrseq-fixes-for-v6.11-rc6' of 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
Commit a9aaf1ff88 ("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: a9aaf1ff88 ("power: sequencing: request the WLAN enable GPIO as-is")
Link: https://lore.kernel.org/r/20240823115500.37280-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.11-rc6' of 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
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.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of 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
- One more write delegation fix
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Merge tag 'nfsd-6.11-3' of 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
* 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.
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.11-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
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
There is a fairly large number of bug fixes for Qualcomm platforms,
most of them addressing issues with the devicetree files for the
newly added Snapdragon X1 based laptops to make them more reliable.
The Qualcomm driver changes address a few build-time issues as well
as runtime problems in the tzmem and scm firmware, the USB Type-C
driver, and the cmd-db and pmic_glink soc drivers.
The NXP i.MX usually gets a bunch of devicetree fixes that is proportional
to the number of supported machines. This includes both warning fixes
and correctness for the 64-bit i.MX9, i.MX8 and layerscape platforms,
as well as a single fix for a 32-bit i.MX6 based board.
The other changes are the usual minor changes, including an update to the
MAINTAINERS file, an omap3 dts file and a SoC driver for mpfs (risc-v).
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Merge tag 'arm-fixes-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"There is a fairly large number of bug fixes for Qualcomm platforms,
most of them addressing issues with the devicetree files for the newly
added Snapdragon X1 based laptops to make them more reliable.
The Qualcomm driver changes address a few build-time issues as well as
runtime problems in the tzmem and scm firmware, the USB Type-C driver,
and the cmd-db and pmic_glink soc drivers.
The NXP i.MX usually gets a bunch of devicetree fixes that is
proportional to the number of supported machines. This includes both
warning fixes and correctness for the 64-bit i.MX9, i.MX8 and
layerscape platforms, as well as a single fix for a 32-bit i.MX6 based
board.
The other changes are the usual minor changes, including an update to
the MAINTAINERS file, an omap3 dts file and a SoC driver for mpfs
(risc-v)"
* tag 'arm-fixes-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (50 commits)
firmware: microchip: fix incorrect error report of programming:timeout on success
soc: qcom: pd-mapper: Fix singleton refcount
firmware: qcom: tzmem: disable sdm670 platform
soc: qcom: pmic_glink: Actually communicate when remote goes down
usb: typec: ucsi: Move unregister out of atomic section
soc: qcom: pmic_glink: Fix race during initialization
firmware: qcom: qseecom: remove unused functions
firmware: qcom: tzmem: fix virtual-to-physical address conversion
firmware: qcom: scm: Mark get_wq_ctx() as atomic call
arm64: dts: qcom: x1e80100: Fix Adreno SMMU global interrupt
arm64: dts: qcom: disable GPU on x1e80100 by default
arm64: dts: imx8mm-phygate: fix typo pinctrcl-0
arm64: dts: imx95: correct L3Cache cache-sets
arm64: dts: imx95: correct a55 power-domains
arm64: dts: freescale: imx93-tqma9352-mba93xxla: fix typo
arm64: dts: freescale: imx93-tqma9352: fix CMA alloc-ranges
ARM: dts: imx6dl-yapp43: Increase LED current to match the yapp4 HW design
arm64: dts: imx93: update default value for snps,clk-csr
arm64: dts: freescale: tqma9352: Fix watchdog reset
arm64: dts: imx8mp-beacon-kit: Fix Stereo Audio on WM8962
...
- a fix for Cypress PS/2 touchpad for regression introduced in 6.11
merge window where timeout condition is incorrectly reported for
all extended Cypress commands.
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Merge tag 'input-for-v6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fix from Dmitry Torokhov:
- a fix for Cypress PS/2 touchpad for regression introduced in 6.11
merge window where a timeout condition is incorrectly reported for
all extended Cypress commands
* tag 'input-for-v6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: cypress_ps2 - fix waiting for command response
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Merge tag 'pci-v6.11-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Add Manivannan Sadhasivam as PCI native host bridge and endpoint
driver reviewer (Manivannan Sadhasivam)
- Disable MHI RAM data parity error interrupt for qcom SA8775P SoC to
work around hardware erratum that causes a constant stream of
interrupts (Manivannan Sadhasivam)
- Don't try to fall back to qcom Operating Performance Points (OPP)
support unless the platform actually supports OPP (Manivannan
Sadhasivam)
- Add imx@lists.linux.dev mailing list to MAINTAINERS for NXP
layerscape and imx6 PCI controller drivers (Frank Li)
* tag 'pci-v6.11-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
MAINTAINERS: PCI: Add NXP PCI controller mailing list imx@lists.linux.dev
PCI: qcom: Use OPP only if the platform supports it
PCI: qcom-ep: Disable MHI RAM data parity error interrupt for SA8775P SoC
MAINTAINERS: Add Manivannan Sadhasivam as Reviewer for PCI native host bridge and endpoint drivers
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Merge tag 'block-6.11-20240830' of git://git.kernel.dk/linux
Pull block fix from Jens Axboe:
"Fix for a single regression for WRITE_SAME introduced in the 6.11
merge window"
* tag 'block-6.11-20240830' of git://git.kernel.dk/linux:
block: fix detection of unsupported WRITE SAME in blkdev_issue_write_zeroes
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Merge tag 'io_uring-6.11-20240830' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
- A fix for a regression that happened in 6.11 merge window, where the
copying of iovecs for compat mode applications got broken for certain
cases.
- Fix for a bug introduced in 6.10, where if using recv/send bundles
with classic provided buffers, the recv/send would fail to set the
right iovec count. This caused 0 byte send/recv results. Found via
code coverage testing and writing a test case to exercise it.
* tag 'io_uring-6.11-20240830' of git://git.kernel.dk/linux:
io_uring/kbuf: return correct iovec count from classic buffer peek
io_uring/rsrc: ensure compat iovecs are copied correctly
It contains:
- DTS directory update to match all entries not only those starting with
at91 or sama
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Merge tag 'at91-fixes-6.11' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/fixes
Microchip AT91 fixes for v6.11
It contains:
- DTS directory update to match all entries not only those starting with
at91 or sama
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Merge tag 'lsm-pr-20240830' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm fix from Paul Moore:
"One small patch to correct a NFS permissions problem with SELinux and
Smack"
* tag 'lsm-pr-20240830' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
selinux,smack: don't bypass permissions check in inode_setsecctx hook
- Remove checks for highest performance match on preferred cores when
updating preferred core ranking in amd-pstate (Mario Limonciello).
- Make amd-pstate call topology_logical_package_id() instead of
logical_die_id() to get a socked ID for a CPU (Gautham Shenoy).
- Fix uninitialized variable in amd_pstate_cpu_boost_update() (Dan
Carpenter).
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Merge tag 'pm-6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix three issues in the amd-pstate cpufreq driver.
Specifics:
- Remove checks for highest performance match on preferred cores when
updating preferred core ranking in amd-pstate (Mario Limonciello)
- Make amd-pstate call topology_logical_package_id() instead of
logical_die_id() to get a socked ID for a CPU (Gautham Shenoy)
- Fix uninitialized variable in amd_pstate_cpu_boost_update() (Dan
Carpenter)"
* tag 'pm-6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq/amd-pstate-ut: Don't check for highest perf matching on prefcore
cpufreq/amd-pstate: Use topology_logical_package_id() instead of logical_die_id()
cpufreq: amd-pstate: Fix uninitialized variable in amd_pstate_cpu_boost_update()
- Single fix for non-continous port map programming
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Merge tag 'soundwire-6.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire fix from Vinod Koul:
- Single fix for non-continous port map programming
* tag 'soundwire-6.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: stream: fix programming slave ports for non-continous port maps
Including:
- Fix a device-stall problem in bad io-page-fault setups (faults
received from devices with no supporting domain attached).
- Context flush fix for Intel VT-d.
- Do not allow non-read+non-write mapping through iommufd as most
implementations can not handle that.
- Fix a possible infinite-loop issue in map_pages() path.
- Add Jean-Philippe as reviewer for SMMUv3 SVA support
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Merge tag 'iommu-fixes-v6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:
- Fix a device-stall problem in bad io-page-fault setups (faults
received from devices with no supporting domain attached).
- Context flush fix for Intel VT-d.
- Do not allow non-read+non-write mapping through iommufd as most
implementations can not handle that.
- Fix a possible infinite-loop issue in map_pages() path.
- Add Jean-Philippe as reviewer for SMMUv3 SVA support
* tag 'iommu-fixes-v6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
MAINTAINERS: Add Jean-Philippe as SMMUv3 SVA reviewer
iommu: Do not return 0 from map_pages if it doesn't do anything
iommufd: Do not allow creating areas without READ or WRITE
iommu/vt-d: Fix incorrect domain ID in context flush helper
iommu: Handle iommu faults for a bad iopf setup
io_provided_buffers_select() returns 0 to indicate success, but it should
be returning 1 to indicate that 1 vec was mapped. This causes peeking
to fail with classic provided buffers, and while that's not a use case
that anyone should use, it should still work correctly.
The end result is that no buffer will be selected, and hence a completion
with '0' as the result will be posted, without a buffer attached.
Fixes: 35c8711c8f ("io_uring/kbuf: add helpers for getting/peeking multiple buffers")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
It is not safe to dereference fl->c.flc_owner without first confirming
fl->fl_lmops is the expected manager. nfsd4_deleg_getattr_conflict()
tests fl_lmops but largely ignores the result and assumes that flc_owner
is an nfs4_delegation anyway. This is wrong.
With this patch we restore the "!= &nfsd_lease_mng_ops" case to behave
as it did before the change mentioned below. This is the same as the
current code, but without any reference to a possible delegation.
Fixes: c5967721e1 ("NFSD: handle GETATTR conflict with write delegation")
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
For buffer registration (or updates), a userspace iovec is copied in
and updated. If the application is within a compat syscall, then the
iovec type is compat_iovec rather than iovec. However, the type used
in __io_sqe_buffers_update() and io_sqe_buffers_register() is always
struct iovec, and hence the source is incremented by the size of a
non-compat iovec in the loop. This misses every other iovec in the
source, and will run into garbage half way through the copies and
return -EFAULT to the application.
Maintain the source address separately and assign to our user vec
pointer, so that copies always happen from the right source address.
While in there, correct a bad placement of __user which triggered
the following sparse warning prior to this fix:
io_uring/rsrc.c:981:33: warning: cast removes address space '__user' of expression
io_uring/rsrc.c:981:30: warning: incorrect type in assignment (different address spaces)
io_uring/rsrc.c:981:30: expected struct iovec const [noderef] __user *uvec
io_uring/rsrc.c:981:30: got struct iovec *[noderef] __user
Fixes: f4eaf8eda8 ("io_uring/rsrc: Drop io_copy_iov in favor of iovec API")
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Here's a new modem device id.
This one has been in linux-next with no reported issues.
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Merge tag 'usb-serial-6.11-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial device id for 6.11-rc6
Here's a new modem device id.
This one has been in linux-next with no reported issues.
* tag 'usb-serial-6.11-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add MeiG Smart SRM825L
