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Adds basic driver for the RVU representor.
Driver on probe does pci specific initialization and
does hw resources configuration. Introduces RVU_ESWITCH
kernel config to enable/disable the driver. Representor
and NIC shares the code but representors netdev support
subset of NIC functionality. Hence "otx2_rep_dev" API
helps to skip the features initialization that are not
supported by the representors.
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a bug in the Macbook Pro 11,2 and Air 7,2 firmware similar to
what is described in:
commit 7dc918daaf29 ("ACPI: video: force native for Apple MacbookPro9,2")
This bug causes their backlights not to come back after resume.
Add DMI quirks to select the working native Intel firmware interface
such that the backlght comes back on after resume.
Signed-off-by: Jonathan Denose <jdenose@google.com>
Link: https://patch.msgid.link/20241112222516.1.I7fa78e6acbbed56ed5677f5e2dacc098a269d955@changeid
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Since commit 60949b7b8054 ("ACPI: CPPC: Fix MASK_VAL() usage"), _CPC
registers cannot be changed from 1 to 0.
It turns out that there is an extra OR after MASK_VAL_WRITE(), which
has already ORed prev_val with the register mask.
Remove the extra OR to fix the problem.
Fixes: 60949b7b8054 ("ACPI: CPPC: Fix MASK_VAL() usage")
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://patch.msgid.link/20241113103309.761031-1-zhenglifeng1@huawei.com
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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KVM x86 misc changes for 6.13
- Clean up and optimize KVM's handling of writes to MSR_IA32_APICBASE.
- Quirk KVM's misguided behavior of initialized certain feature MSRs to
their maximum supported feature set, which can result in KVM creating
invalid vCPU state. E.g. initializing PERF_CAPABILITIES to a non-zero
value results in the vCPU having invalid state if userspace hides PDCM
from the guest, which can lead to save/restore failures.
- Fix KVM's handling of non-canonical checks for vCPUs that support LA57
to better follow the "architecture", in quotes because the actual
behavior is poorly documented. E.g. most MSR writes and descriptor
table loads ignore CR4.LA57 and operate purely on whether the CPU
supports LA57.
- Bypass the register cache when querying CPL from kvm_sched_out(), as
filling the cache from IRQ context is generally unsafe, and harden the
cache accessors to try to prevent similar issues from occuring in the
future.
- Advertise AMD_IBPB_RET to userspace, and fix a related bug where KVM
over-advertises SPEC_CTRL when trying to support cross-vendor VMs.
- Minor cleanups
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KVM VMX change for 6.13
- Remove __invept()'s unused @gpa param, which was left behind when KVM
dropped code for invalidating a specific GPA (Intel never officially
documented support for single-address INVEPT; presumably pre-production
CPUs supported it at some point).
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KVM selftests changes for 6.13
- Enable XFAM-based features by default for all selftests VMs, which will
allow removing the "no AVX" restriction.
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KVM x86 MMU changes for 6.13
- Cleanup KVM's handling of Accessed and Dirty bits to dedup code, improve
documentation, harden against unexpected changes, and to simplify
A/D-disabled MMUs by using the hardware-defined A/D bits to track if a
PFN is Accessed and/or Dirty.
- Elide TLB flushes when aging SPTEs, as has been done in x86's primary
MMU for over 10 years.
- Batch TLB flushes when zapping collapsible TDP MMU SPTEs, i.e. when
dirty logging is toggled off, which reduces the time it takes to disable
dirty logging by ~3x.
- Recover huge pages in-place in the TDP MMU instead of zapping the SP
and waiting until the page is re-accessed to create a huge mapping.
Proactively installing huge pages can reduce vCPU jitter in extreme
scenarios.
- Remove support for (poorly) reclaiming page tables in shadow MMUs via
the primary MMU's shrinker interface.
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KVM generic changes for 6.13
- Rework kvm_vcpu_on_spin() to use a single for-loop instead of making two
partial poasses over "all" vCPUs. Opportunistically expand the comment
to better explain the motivation and logic.
- Protect vcpu->pid accesses outside of vcpu->mutex with a rwlock instead
of RCU, so that running a vCPU on a different task doesn't encounter
long stalls due to having to wait for all CPUs become quiescent.
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The newly added interface is broken when PRINTK is disabled:
drivers/tty/sysrq.c: In function '__handle_sysrq':
drivers/tty/sysrq.c:601:9: error: implicit declaration of function 'printk_force_console_enter' [-Wimplicit-function-declaration]
601 | printk_force_console_enter();
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/tty/sysrq.c:611:25: error: implicit declaration of function 'printk_force_console_exit' [-Wimplicit-function-declaration]
611 | printk_force_console_exit();
| ^~~~~~~~~~~~~~~~~~~~~~~~~
Add empty stub functions for both.
Fixes: ed76c07c6885 ("printk: Introduce FORCE_CON flag")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Tested-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Link: https://lore.kernel.org/r/20241112142939.724093-1-arnd@kernel.org
Signed-off-by: Petr Mladek <pmladek@suse.com>
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s/'is initialized'/'is initialized with'
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20241112025724.474881-1-xiujianfeng@huaweicloud.com
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This patch introduces the following changes:
- Adds OF match table.
- Hardcodes hid-report-addr in the driver rather than fetching it
from the device property.
Signed-off-by: Charles Wang <charles.goodix@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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The Goodix GT7986U touch controller report touch data according to the
HID protocol through the SPI bus. However, it is incompatible with
Microsoft's HID-over-SPI protocol.
NOTE: these bindings are distinct from the bindings used with the
GT7986U when the chip is running I2C firmware. For some background,
see discussion on the mailing lists in the thread:
https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com
Signed-off-by: Charles Wang <charles.goodix@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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Interrupts can be routed to maximal four virtual CPUs with real HW
EIOINTC interrupt controller model, since interrupt routing is encoded
with CPU bitmap and EIOINTC node combined method. Here add the EIOINTC
virt extension support so that interrupts can be routed to 256 vCPUs in
virtual machine mode. CPU bitmap is replaced with normal encoding and
EIOINTC node type is removed, so there are 8 bits for cpu selection, at
most 256 vCPUs are supported for interrupt routing.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Co-developed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Enable the KVM_IRQ_ROUTING/KVM_IRQCHIP/KVM_MSI configuration items,
add the KVM_CAP_IRQCHIP capability, and implement the query interface
of the in-kernel irqchip.
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Implement the communication interface between the user mode programs
and the kernel in PCHPIC interrupt control simulation, which is used
to obtain or send the simulation data of the interrupt controller in
the user mode process, and is also used in VM migration or VM saving
and restoration.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add implementation of IPI interrupt controller's address space read and
write function simulation.
Implement interrupt injection interface under loongarch.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add device model for PCHPIC interrupt controller, implemente basic
create & destroy interface, and register device model to kvm device
table.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Implement the communication interface between the user mode programs
and the kernel in EIOINTC interrupt controller simulation, which is
used to obtain or send the simulation data of the interrupt controller
in the user mode process, and is also used in VM migration or VM saving
and restoration.
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add implementation of EIOINTC interrupt controller's address space read
and write function simulation.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add device model for EIOINTC interrupt controller, implement basic
create & destroy interfaces, and register device model to kvm device
table.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Implement the communication interface between the user mode programs
and the kernel in IPI interrupt controller simulation, which is used
to obtain or send the simulation data of the interrupt controller in
the user mode process, and is also used in VM migration or VM saving
and restoration.
Signed-off-by: Min Zhou <zhoumin@loongson.cn>
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add implementation of IPI interrupt controller's address space read and
write function simulation.
Signed-off-by: Min Zhou <zhoumin@loongson.cn>
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add device model for IPI interrupt controller, implement basic create &
destroy interfaces, and register device model to kvm device table.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add iocsr and mmio memory read and write simulation to the kernel. When
the VM accesses the device address space through iocsr instructions or
mmio, it does not need to return to the qemu user mode but can directly
completes the access in the kernel mode.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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pcm.h has SNDRV_PCM_TRIGGER_xxx, but it is missing "2".
Fixup it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87ed3gsziy.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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If user no update BIOS, the speaker will no sound.
This patch support old BIOS to have sound from speaker.
Fixes: 1e707769df07 ("ALSA: hda/realtek - Set GPIO3 to default at S4 state for Thinkpad with ALC1318")
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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HP EliteBook 645 G10 uses ALC236 codec and need the
ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF quirk to make mute LED and
micmute LED work.
Signed-off-by: Maksym Glubokiy <maxgl.kernel@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20241112154815.10888-1-maxgl.kernel@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Implemented the suggested solution mentioned in the bug
https://bugzilla.kernel.org/show_bug.cgi?id=218820
Preventing the disabling of delayed allocation mode on remount.
delalloc to nodelalloc not permitted anymore
nodelalloc to delalloc permitted, not affected
Signed-off-by: Nicolas Bretz <bretznic@gmail.com>
Link: https://patch.msgid.link/20241014034143.59779-1-bretznic@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The b_frozen_data allocation should not be failed during journal
committing process, otherwise jbd2 will abort.
Since commit 490c1b444ce653d("jbd2: do not fail journal because of
frozen_buffer allocation failure") already added '__GFP_NOFAIL' flag
in do_get_write_access(), just add '__GFP_NOFAIL' flag for all allocations
in jbd2_journal_write_metadata_buffer(), like 'new_bh' allocation does.
Besides, remove all error handling branches for do_get_write_access().
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20241012085530.2147846-1-chengzhihao@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The variables "&EXT4_SB(inode->i_sb)->s_fc_lock" and "&sbi->s_fc_lock"
are the same lock. This function uses a mix of both, which is a bit
unsightly and confuses Smatch.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/96008557-8ff4-44cc-b5e3-ce242212f1a3@stanley.mountain
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Use string choice helpers for better readability and to fix cocci warning
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Closes: https://lore.kernel.org/r/202410062256.BoynX3c2-lkp@intel.com/
Signed-off-by: R Sundar <prosunofficial@gmail.com>
Link: https://patch.msgid.link/20241007172006.83339-1-prosunofficial@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Keep 'success' internally to track if any error happened and then
return it at the end in do_one_pass(). If jbd2_do_replay() return
-ENOMEM then stop replay journal.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240930005942.626942-7-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The judgement 'if (block_error && success == 0)' is never valid. Just
remove useless 'block_error' variable.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20240930005942.626942-6-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Factor out jbd2_do_replay() no funtional change.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240930005942.626942-5-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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To make JBD2_COMMIT_BLOCK process more clean, no functional change.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20240930005942.626942-4-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Now buffer_head free is very fragmented in do_one_pass(), unified release
of buffer_head in do_one_pass()
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20240930005942.626942-3-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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'need_check_commit_time' is only used by v2/v3 checksum, so there isn't
need to add 'need_check_commit_time' judegement for v1 checksum logic.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20240930005942.626942-2-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Instead of directly casting and returning an error-valued pointer,
use ERR_CAST to make the error handling more explicit and improve
code clarity.
Signed-off-by: Yu Jiaoliang <yujiaoliang@vivo.com>
Link: https://patch.msgid.link/20240920021440.1959243-1-yujiaoliang@vivo.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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On some filesystems, it is currently possible to create a transient
data inconsistency between pagecache and on-disk state. For example,
on a 1k block size ext4 filesystem:
$ xfs_io -fc "pwrite 0 2k" -c "mmap 0 4k" -c "mwrite 2k 2k" \
-c "truncate 8k" -c "fiemap -v" -c "pread -v 2k 16" <file>
...
EXT: FILE-OFFSET BLOCK-RANGE TOTAL FLAGS
0: [0..3]: 17410..17413 4 0x1
1: [4..15]: hole 12
00000800: 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 XXXXXXXXXXXXXXXX
$ umount <mnt>; mount <dev> <mnt>
$ xfs_io -c "pread -v 2k 16" <file>
00000800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
This allocates and writes two 1k blocks, map writes to the post-eof
portion of the (4k) eof folio, extends the file, and then shows that
the post-eof data is not cleared before the file size is extended.
The result is pagecache with a clean and uptodate folio over a hole
that returns non-zero data. Once reclaimed, pagecache begins to
return valid data.
Some filesystems avoid this problem by flushing the EOF folio before
inode size extension. This triggers writeback time partial post-eof
zeroing. XFS explicitly zeroes newly exposed file ranges via
iomap_zero_range(), but this includes a hack to flush dirty but
hole-backed folios, which means writeback actually does the zeroing
in this particular case as well. bcachefs explicitly flushes the eof
folio on truncate extension to the same effect, but doesn't handle
the analogous write extension case (i.e., replace "truncate 8k" with
"pwrite 4k 4k" in the above example command to reproduce the same
problem on bcachefs). btrfs doesn't seem to support subpage block
sizes.
The two main options to avoid this behavior are to either flush or
do the appropriate zeroing during size extending operations. Zeroing
is only required when the size change exposes ranges of the file
that haven't been directly written, such as a write or truncate that
starts beyond the current eof. The pagecache_isize_extended() helper
is already used for this particular scenario. It currently cleans
any pte's for the eof folio to ensure preexisting mappings fault and
allow the filesystem to take action based on the updated inode size.
This is required to ensure the folio is fully backed by allocated
blocks, for example, but this also happens to be the same scenario
zeroing is required.
Update pagecache_isize_extended() to zero the post-eof range of the
eof folio if it is dirty at the time of the size change, since
writeback now won't have the chance. If non-dirty, the folio has
either not been written or the post-eof portion was zeroed by
writeback.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Link: https://patch.msgid.link/20240919160741.208162-3-bfoster@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Using mapped writes, it's technically possible to expose stale
post-eof data on a truncate up operation. Consider the following
example:
$ xfs_io -fc "pwrite 0 2k" -c "mmap 0 4k" -c "mwrite 2k 2k" \
-c "truncate 8k" -c "pread -v 2k 16" <file>
...
00000800: 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 XXXXXXXXXXXXXXXX
...
This shows that the post-eof data written via mwrite lands within
EOF after a truncate up. While this is deliberate of the test case,
behavior is somewhat unpredictable because writeback does post-eof
zeroing, and writeback can occur at any time in the background. For
example, an fsync inserted between the mwrite and truncate causes
the subsequent read to instead return zeroes. This basically means
that there is a race window in this situation between any subsequent
extending operation and writeback that dictates whether post-eof
data is exposed to the file or zeroed.
To prevent this problem, perform partial block zeroing as part of
the various inode size extending operations that are susceptible to
it. For truncate extension, zero around the original eof similar to
how truncate down does partial zeroing of the new eof. For extension
via writes and fallocate related operations, zero the newly exposed
range of the file to cover any partial zeroing that must occur at
the original and new eof blocks.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Link: https://patch.msgid.link/20240919160741.208162-2-bfoster@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The commit 91562895f803 ("ext4: properly sync file size update after O_SYNC
direct IO") causes confusion about the meaning of the return value of
ext4_dio_write_end_io().
Specifically, when the ext4_handle_inode_extension() operation succeeds,
ext4_dio_write_end_io() directly returns count instead of 0.
This does not cause a bug in the current kernel, but the semantics of the
return value of the ext4_dio_write_end_io() function are wrong, which is
likely to introduce bugs in the future code evolution.
Signed-off-by: Jinliang Zheng <alexjlzheng@tencent.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20240919082539.381626-1-alexjlzheng@tencent.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Commit 449813515d3e ("block, fs: Restore the per-bio/request data
lifetime fields") restored write-hint support in ext4. But that is
applicable only for direct IO. This patch supports passing
write-hint for buffered IO from ext4 file system to block layer
by filling bi_write_hint of struct bio in io_submit_add_bh().
Signed-off-by: j.xia <j.xia@samsung.com>
Link: https://patch.msgid.link/20240919020341.2657646-1-j.xia@samsung.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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When I enabled ext4 debug for fault injection testing, I encountered the
following warning:
EXT4-fs error (device sda): ext4_read_inode_bitmap:201: comm fsstress:
Cannot read inode bitmap - block_group = 8, inode_bitmap = 1051
WARNING: CPU: 0 PID: 511 at fs/buffer.c:1181 mark_buffer_dirty+0x1b3/0x1d0
The root cause of the issue lies in the improper implementation of ext4's
buffer_head read fault injection. The actual completion of buffer_head
read and the buffer_head fault injection are not atomic, which can lead
to the uptodate flag being cleared on normally used buffer_heads in race
conditions.
[CPU0] [CPU1] [CPU2]
ext4_read_inode_bitmap
ext4_read_bh()
<bh read complete>
ext4_read_inode_bitmap
if (buffer_uptodate(bh))
return bh
jbd2_journal_commit_transaction
__jbd2_journal_refile_buffer
__jbd2_journal_unfile_buffer
__jbd2_journal_temp_unlink_buffer
ext4_simulate_fail_bh()
clear_buffer_uptodate
mark_buffer_dirty
<report warning>
WARN_ON_ONCE(!buffer_uptodate(bh))
The best approach would be to perform fault injection in the IO completion
callback function, rather than after IO completion. However, the IO
completion callback function cannot get the fault injection code in sb.
Fix it by passing the result of fault injection into the bh read function,
we simulate faults within the bh read function itself. This requires adding
an extra parameter to the bh read functions that need fault injection.
Fixes: 46f870d690fe ("ext4: simulate various I/O and checksum errors when reading metadata")
Signed-off-by: Long Li <leo.lilong@huawei.com>
Link: https://patch.msgid.link/20240906091746.510163-1-leo.lilong@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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When converting a delalloc extent in ext4_es_insert_extent(), since we
only want to pass the info of whether the quota has already been claimed
if the allocation is a direct allocation from ext4_map_create_blocks(),
there is no need to pass full mapping flags, so changes to just pass
whether the EXT4_GET_BLOCKS_DELALLOC_RESERVE bit is set.
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240906061401.2980330-1-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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When ctx_set_flags() is unused, it prevents kernel builds
with clang, `make W=1` and CONFIG_WERROR=y:
.../ext4/super.c:2120:1: error: unused function 'ctx_set_flags' [-Werror,-Wunused-function]
2120 | EXT4_SET_CTX(flags); /* set only */
| ^~~~~~~~~~~~~~~~~~~
Fix this by marking ctx_*_flags() with __maybe_unused
(mark both for the sake of symmetry).
See also commit 6863f5643dd7 ("kbuild: allow Clang to find unused static
inline functions for W=1 build").
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20240905163229.140522-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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This is the logic behavior and one that we would like to verify
using a generic fstest similar to xfs/546.
Link: https://lore.kernel.org/fstests/20240830152648.GE6216@frogsfrogsfrogs/
Suggested-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240904084657.1062243-1-amir73il@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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cma_alloc() keep failed in our system which thanks to a jh->bh->b_page
can not be migrated out of CMA area[1] as the jh has one cp_transaction
pending on it because of j_free > j_max_transaction_buffers[2][3][4][5][6].
We temporarily solve this by launching jbd2_log_do_checkpoint forcefully
somewhere. Since journal is common mechanism to all JFSs and
cp_transaction has a little fewer opportunity to be launched, the
cma_alloc() could be affected under the same scenario. This patch
would like to have buffer_head of ext4 not use CMA pages when doing
sb_getblk.
[1]
crash_arm64_v8.0.4++> kmem -p|grep ffffff808f0aa150(sb->s_bdev->bd_inode->i_mapping)
fffffffe01a51c00 e9470000 ffffff808f0aa150 3 2 8000000008020 lru,private
fffffffe03d189c0 174627000 ffffff808f0aa150 4 2 2004000000008020 lru,private
fffffffe03d88e00 176238000 ffffff808f0aa150 3f9 2 2008000000008020 lru,private
fffffffe03d88e40 176239000 ffffff808f0aa150 6 2 2008000000008020 lru,private
fffffffe03d88e80 17623a000 ffffff808f0aa150 5 2 2008000000008020 lru,private
fffffffe03d88ec0 17623b000 ffffff808f0aa150 1 2 2008000000008020 lru,private
fffffffe03d88f00 17623c000 ffffff808f0aa150 0 2 2008000000008020 lru,private
fffffffe040e6540 183995000 ffffff808f0aa150 3f4 2 2004000000008020 lru,private
[2] page -> buffer_head
crash_arm64_v8.0.4++> struct page.private fffffffe01a51c00 -x
private = 0xffffff802fca0c00
[3] buffer_head -> journal_head
crash_arm64_v8.0.4++> struct buffer_head.b_private 0xffffff802fca0c00
b_private = 0xffffff8041338e10,
[4] journal_head -> b_cp_transaction
crash_arm64_v8.0.4++> struct journal_head.b_cp_transaction 0xffffff8041338e10 -x
b_cp_transaction = 0xffffff80410f1900,
[5] transaction_t -> journal
crash_arm64_v8.0.4++> struct transaction_t.t_journal 0xffffff80410f1900 -x
t_journal = 0xffffff80e70f3000,
[6] j_free & j_max_transaction_buffers
crash_arm64_v8.0.4++> struct journal_t.j_free,j_max_transaction_buffers 0xffffff80e70f3000 -x
j_free = 0x3f1,
j_max_transaction_buffers = 0x100,
Suggested-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240904075300.1148836-1-zhaoyang.huang@unisoc.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The if condition !A || A && B can be simplified to !A || B.
./fs/ext4/fast_commit.c:362:21-23: WARNING !A || A && B is equivalent to !A || B.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9837
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240830071713.40565-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The original implementation ext4's FS_IOC_GETFSMAP handling only
worked when the range of queried blocks included at least one free
(unallocated) block range. This is because how the metadata blocks
were emitted was as a side effect of ext4_mballoc_query_range()
calling ext4_getfsmap_datadev_helper(), and that function was only
called when a free block range was identified. As a result, this
caused generic/365 to fail.
Fix this by creating a new function ext4_getfsmap_meta_helper() which
gets called so that blocks before the first free block range in a
block group can get properly reported.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
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The maximum length of a filename is 255 and the minimum block size is 1024,
so it is always guaranteed that the number of entries is greater than or
equal to 2 when do_split() is called. So unless ext4_dx_add_entry() and
make_indexed_dir() or some other functions are buggy, 'split == 0' will
not occur.
Setting 'continued' to 0 in this case masks the problem that the file
system has become corrupted, even though it prevents possible out-of-bounds
access. Hence WARN_ON_ONCE() is used to check if 'split' is 0, and if it is
then warns and returns an error to abort split.
Suggested-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20240823160518.GA424729@mit.edu
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20241008121152.3771906-1-libaokun@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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