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Move the misaligned flags into the features field to reclaim a little
bit of space.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20240619154623.450048-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Start with the first bit, and drop the plural-S from the name.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20240619154623.450048-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the bounce flag into the features field to reclaim a little bit of
space.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-27-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the skip_tagset_quiesce flag into the queue_limits feature field so
that it can be set atomically with the queue frozen.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-26-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the pci_p2pdma flag into the queue_limits feature field so that it
can be set atomically with the queue frozen.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-25-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the zone_resetall flag into the queue_limits feature field so that
it can be set atomically with the queue frozen.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-24-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the zoned flags into the features field to reclaim a little
bit of space.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-23-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the poll flag into the queue_limits feature field so that it can
be set atomically with the queue frozen.
Stacking drivers are simplified in that they now can simply set the
flag, and blk_stack_limits will clear it when the features is not
supported by any of the underlying devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-22-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the dax flag into the queue_limits feature field so that it can be
set atomically with the queue frozen.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-21-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the nowait flag into the queue_limits feature field so that it can
be set atomically with the queue frozen.
Stacking drivers are simplified in that they now can simply set the
flag, and blk_stack_limits will clear it when the features is not
supported by any of the underlying devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-20-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the synchronous flag into the queue_limits feature field so that it
can be set atomically with the queue frozen.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-19-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the stable_writes flag into the queue_limits feature field so that
it can be set atomically with the queue frozen.
The flag is now inherited by blk_stack_limits, which greatly simplifies
the code in dm, and fixed md which previously did not pass on the flag
set on lower devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-18-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the io_stat flag into the queue_limits feature field so that it can
be set atomically with the queue frozen.
Simplify md and dm to set the flag unconditionally instead of avoiding
setting a simple flag for cases where it already is set by other means,
which is a bit pointless.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-17-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the add_random flag into the queue_limits feature field so that it
can be set atomically with the queue frozen.
Note that this also removes code from dm to clear the flag based on
the underlying devices, which can't be reached as dm devices will
always start out without the flag set.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-16-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the nonrot flag into the queue_limits feature field so that it can
be set atomically with the queue frozen.
Use the chance to switch to defaulting to non-rotational and require
the driver to opt into rotational, which matches the polarity of the
sysfs interface.
For the z2ram, ps3vram, 2x memstick, ubiblock and dcssblk the new
rotational flag is not set as they clearly are not rotational despite
this being a behavior change. There are some other drivers that
unconditionally set the rotational flag to keep the existing behavior
as they arguably can be used on rotational devices even if that is
probably not their main use today (e.g. virtio_blk and drbd).
The flag is automatically inherited in blk_stack_limits matching the
existing behavior in dm and md.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the cache control settings into the queue_limits so that the flags
can be set atomically with the device queue frozen.
Add new features and flags field for the driver set flags, and internal
(usually sysfs-controlled) flags in the block layer. Note that we'll
eventually remove enough field from queue_limits to bring it back to the
previous size.
The disable flag is inverted compared to the previous meaning, which
means it now survives a rescan, similar to the max_sectors and
max_discard_sectors user limits.
The FLUSH and FUA flags are now inherited by blk_stack_limits, which
simplified the code in dm a lot, but also causes a slight behavior
change in that dm-switch and dm-unstripe now advertise a write cache
despite setting num_flush_bios to 0. The I/O path will handle this
gracefully, but as far as I can tell the lack of num_flush_bios
and thus flush support is a pre-existing data integrity bug in those
targets that really needs fixing, after which a non-zero num_flush_bios
should be required in dm for targets that map to underlying devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-14-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Fold blk_flush_policy into the only caller to prepare for pending changes
to it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20240617060532.127975-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
queue_attr_store updates attributes used to control generating I/O, and
can cause malformed bios if changed with I/O in flight. Freeze the queue
in common code instead of adding it to almost every attribute.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20240617060532.127975-12-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move the integrity information into the queue limits so that it can be
set atomically with other queue limits, and that the sysfs changes to
the read_verify and write_generate flags are properly synchronized.
This also allows to provide a more useful helper to stack the integrity
fields, although it still is separate from the main stacking function
as not all stackable devices want to inherit the integrity settings.
Even with that it greatly simplifies the code in md and dm.
Note that the integrity field is moved as-is into the queue limits.
While there are good arguments for removing the separate blk_integrity
structure, this would cause a lot of churn and might better be done at a
later time if desired. However the integrity field in the queue_limits
structure is now unconditional so that various ifdefs can be avoided or
replaced with IS_ENABLED(). Given that tiny size of it that seems like
a worthwhile trade off.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Invert the flags so that user set values will be able to persist
revalidating the integrity information once we switch the integrity
information to queue_limits.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-12-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Currently registering a checksum-enabled (aka PI) integrity profile sets
the QUEUE_FLAG_STABLE_WRITE flag, and unregistering it clears the flag.
This can incorrectly clear the flag when the driver requires stable
writes even without PI, e.g. in case of iSCSI or NVMe/TCP with data
digest enabled.
Fix this by looking at the csum_type directly in bdev_stable_writes and
not setting the queue flag. Also remove the blk_queue_stable_writes
helper as the only user in nvme wants to only look at the actual
QUEUE_FLAG_STABLE_WRITE flag as it inherits the integrity configuration
by other means.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240613084839.1044015-11-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Use the text to integer helper that has error handling and doesn't modify
the input pointer.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Factor the duplicate code for the generate and verify attributes into
common helpers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240613084839.1044015-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Now that there are no indirect calls for PI processing there is no
way to dereference a NULL pointer here. Additionally drivers now always
freeze the queue (or in case of stacking drivers use their internal
equivalent) around changing the integrity profile.
This is effectively a revert of commit 3df49967f6 ("block: flush the
integrity workqueue in blk_integrity_unregister").
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240613084839.1044015-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Block layer integrity configuration is a bit complex right now, as it
indirects through operation vectors for a simple two-dimensional
configuration:
a) the checksum type of none, ip checksum, crc, crc64
b) the presence or absence of a reference tag
Remove the integrity profile, and instead add a separate csum_type flag
which replaces the existing ip-checksum field and a new flag that
indicates the presence of the reference tag.
This removes up to two layers of indirect calls, remove the need to
offload the no-op verification of non-PI metadata to a workqueue and
generally simplifies the code. The downside is that block/t10-pi.c now
has to be built into the kernel when CONFIG_BLK_DEV_INTEGRITY is
supported. Given that both nvme and SCSI require t10-pi.ko, it is loaded
for all usual configurations that enabled CONFIG_BLK_DEV_INTEGRITY
already, though.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Metadata added by bio_integrity_prep is using plain kmalloc, which leads
to random kernel memory being written media. For PI metadata this is
limited to the app tag that isn't used by kernel generated metadata,
but for non-PI metadata the entire buffer leaks kernel memory.
Fix this by adding the __GFP_ZERO flag to allocations for writes.
Fixes: 7ba1ba12ee ("block: Block layer data integrity support")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
A few drivers optimistically try to support discard, write zeroes and
secure erase and disable the features from the I/O completion handler
if the hardware can't support them. This disable can't be done using
the atomic queue limits API because the I/O completion handlers can't
take sleeping locks or freeze the queue. Keep the existing clearing
of the relevant field to zero, but replace the old blk_queue_max_*
APIs with new disable APIs that force the value to 0.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240531074837.1648501-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Remove all APIs that are unused now that sd and sr have been converted
to the atomic queue limits API.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240531074837.1648501-14-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The soft max_sectors limit is normally capped by the hardware limits and
an arbitrary upper limit enforced by the kernel, but can be modified by
the user. A few drivers want to increase this limit (nbd, rbd) or
adjust it up or down based on hardware capabilities (sd).
Change blk_validate_limits to default max_sectors to the optimal I/O
size, or upgrade it to the preferred minimal I/O size if that is
larger than the kernel default if no optimal I/O size is provided based
on the logic in the SD driver.
This keeps the existing kernel default for drivers that do not provide
an io_opt or very big io_min value, but picks a much more useful
default for those who provide these hints, and allows to remove the
hacks to set the user max_sectors limit in nbd, rbd and sd.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240531074837.1648501-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit bf20ab538c ("blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW")
attempts to revert the code change introduced by commit cd5ab1b0fc
("blk-throttle: add .low interface"). However, it leaves behind the
bps_conf[] and iops_conf[] fields in the throtl_grp structure which
aren't set anywhere in the new blk-throttle.c code but are still being
used by tg_prfill_limit() to display the limits in io.max. Now io.max
always displays the following values if a block queue is used:
<m>:<n> rbps=0 wbps=0 riops=0 wiops=0
Fix this problem by removing bps_conf[] and iops_conf[] and use bps[]
and iops[] instead to complete the revert.
Fixes: bf20ab538c ("blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW")
Reported-by: Justin Forbes <jforbes@redhat.com>
Closes: https://github.com/containers/podman/issues/22701#issuecomment-2120627789
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240530134547.970075-1-longman@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
A zoned device may have a last sequential write required zone that is
smaller than other zones. However, all tests to check if a zone write
plug write offset exceeds the zone capacity use the same capacity
value stored in the gendisk zone_capacity field. This is incorrect for a
zoned device with a last runt (smaller) zone.
Add the new field last_zone_capacity to struct gendisk to store the
capacity of the last zone of the device. blk_revalidate_seq_zone() and
blk_revalidate_conv_zone() are both modified to get this value when
disk_zone_is_last() returns true. Similarly to zone_capacity, the value
is first stored using the last_zone_capacity field of struct
blk_revalidate_zone_args. Once zone revalidation of all zones is done,
this is used to set the gendisk last_zone_capacity field.
The checks to determine if a zone is full or if a sector offset in a
zone exceeds the zone capacity in disk_should_remove_zone_wplug(),
disk_zone_wplug_abort_unaligned(), blk_zone_write_plug_init_request(),
and blk_zone_wplug_prepare_bio() are modified to use the new helper
functions disk_zone_is_full() and disk_zone_wplug_is_full().
disk_zone_is_full() uses the zone index to determine if the zone being
tested is the last one of the disk and uses the either the disk
zone_capacity or last_zone_capacity accordingly.
Fixes: dd291d77cc ("block: Introduce zone write plugging")
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Link: https://lore.kernel.org/r/20240530054035.491497-4-dlemoal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit ecfe43b11b ("block: Remember zone capacity when revalidating
zones") introduced checks to ensure that the capacity of the zones of
a zoned device is constant for all zones. However, this check ignores
the possibility that a zoned device has a smaller last zone with a size
not equal to the capacity of other zones. Such device correspond in
practice to an SMR drive with a smaller last zone and all zones with a
capacity equal to the zone size, leading to the last zone capacity being
different than the capacity of other zones.
Correctly handle such device by fixing the check for the constant zone
capacity in blk_revalidate_seq_zone() using the new helper function
disk_zone_is_last(). This helper function is also used in
blk_revalidate_zone_cb() when checking the zone size.
Fixes: ecfe43b11b ("block: Remember zone capacity when revalidating zones")
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Link: https://lore.kernel.org/r/20240530054035.491497-3-dlemoal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The logical block size need to be smaller than the max_hw_sector
setting, otherwise we can't even transfer a single LBA.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The max_user_sectors is one of the three factors determining the actual
max_sectors limit for READ/WRITE requests. Because of that it needs to
be stacked at least for the device mapper multi-path case where requests
are directly inserted on the lower device. For SCSI disks this is
important because the sd driver actually sets it's own advisory limit
that is lower than max_hw_sectors based on the block limits VPD page.
While this is a bit odd an unusual, the same effect can happen if a
user or udev script tweaks the value manually.
Fixes: 4f563a6473 ("block: add a max_user_discard_sectors queue limit")
Reported-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Mike Snitzer <snitzer@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240523182618.602003-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
blk_stats_alloc_enable was used for block hybrid poll, the related
function definition was removed by patch:
commit 54bdd67d0f ("blk-mq: remove hybrid polling")
but the function declaration was not deleted.
Signed-off-by: hexue <xue01.he@samsung.com>
Link: https://lore.kernel.org/r/20240527084533.1485210-1-xue01.he@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Merge tag 'block-6.10-20240523' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
"Followup block updates, mostly due to NVMe being a bit late to the
party. But nothing major in there, so not a big deal.
In detail, this contains:
- NVMe pull request via Keith:
- Fabrics connection retries (Daniel, Hannes)
- Fabrics logging enhancements (Tokunori)
- RDMA delete optimization (Sagi)
- ublk DMA alignment fix (me)
- null_blk sparse warning fixes (Bart)
- Discard support for brd (Keith)
- blk-cgroup list corruption fixes (Ming)
- blk-cgroup stat propagation fix (Waiman)
- Regression fix for plugging stall with md (Yu)
- Misc fixes or cleanups (David, Jeff, Justin)"
* tag 'block-6.10-20240523' of git://git.kernel.dk/linux: (24 commits)
null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'
blk-throttle: remove unused struct 'avg_latency_bucket'
block: fix lost bio for plug enabled bio based device
block: t10-pi: add MODULE_DESCRIPTION()
blk-mq: add helper for checking if one CPU is mapped to specified hctx
blk-cgroup: Properly propagate the iostat update up the hierarchy
blk-cgroup: fix list corruption from reorder of WRITE ->lqueued
blk-cgroup: fix list corruption from resetting io stat
cdrom: rearrange last_media_change check to avoid unintentional overflow
nbd: Fix signal handling
nbd: Remove a local variable from nbd_send_cmd()
nbd: Improve the documentation of the locking assumptions
nbd: Remove superfluous casts
nbd: Use NULL to represent a pointer
brd: implement discard support
null_blk: Fix two sparse warnings
ublk_drv: set DMA alignment mask to 3
nvme-rdma, nvme-tcp: include max reconnects for reconnect logging
nvmet-rdma: Avoid o(n^2) loop in delete_ctrl
nvme: do not retry authentication failures
...
With the following two conditions, bio will be lost:
1) blk plug is not enabled, for example, __blkdev_direct_IO_simple() and
__blkdev_direct_IO_async();
2) bio plug is enabled, for example write IO for raid1/raid10 while
bitmap is enabled;
Root cause is that blk_finish_plug() will add the bio to
curent->bio_list, while such bio will not be handled:
__submit_bio_noacct
current->bio_list = bio_list_on_stack;
blk_start_plug
do {
dm_submit_bio
md_handle_request
raid10_write_request
-> generate new bio for underlying disks
raid1_add_bio_to_plug -> bio is added to plug
} while ((bio = bio_list_pop(&bio_list_on_stack[0])))
-> previous bio are all handled
blk_finish_plug
raid10_unplug
raid1_submit_write
submit_bio_noacct
if (current->bio_list)
bio_list_add(¤t->bio_list[0], bio)
-> add new bio
current->bio_list = NULL
-> new bio is lost
Fix the problem by moving the plug into the while loop, so that
current->bio_list will still be handled after blk_finish_plug().
By the way, enable plug for raid1/raid10 in this case will also prevent
delay IO handling into daemon thread, which should also improve IO
performance.
Fixes: 060406c61c ("block: add plug while submitting IO")
Reported-by: Changhui Zhong <czhong@redhat.com>
Closes: https://lore.kernel.org/all/CAGVVp+Xsmzy2G9YuEatfMT6qv1M--YdOCQ0g7z7OVmcTbBxQAg@mail.gmail.com/
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Tested-by: Changhui Zhong <czhong@redhat.com>
Link: https://lore.kernel.org/r/20240521200308.983986-1-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We can easily have up to 24 flags with sane
atomicity, _without_ pushing anything out
of the first cacheline of struct block_device.
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Merge tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull bdev flags update from Al Viro:
"Compactifying bdev flags.
We can easily have up to 24 flags with sane atomicity, _without_
pushing anything out of the first cacheline of struct block_device"
* tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
bdev: move ->bd_make_it_fail to ->__bd_flags
bdev: move ->bd_ro_warned to ->__bd_flags
bdev: move ->bd_has_subit_bio to ->__bd_flags
bdev: move ->bd_write_holder into ->__bd_flags
bdev: move ->bd_read_only to ->__bd_flags
bdev: infrastructure for flags
wrapper for access to ->bd_partno
Use bdev_is_paritition() instead of open-coding it
Replacement of bdev->bd_inode with sane(r) set of primitives.
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Merge tag 'pull-bd_inode-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull bdev bd_inode updates from Al Viro:
"Replacement of bdev->bd_inode with sane(r) set of primitives by me and
Yu Kuai"
* tag 'pull-bd_inode-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
RIP ->bd_inode
dasd_format(): killing the last remaining user of ->bd_inode
nilfs_attach_log_writer(): use ->bd_mapping->host instead of ->bd_inode
block/bdev.c: use the knowledge of inode/bdev coallocation
gfs2: more obvious initializations of mapping->host
fs/buffer.c: massage the remaining users of ->bd_inode to ->bd_mapping
blk_ioctl_{discard,zeroout}(): we only want ->bd_inode->i_mapping here...
grow_dev_folio(): we only want ->bd_inode->i_mapping there
use ->bd_mapping instead of ->bd_inode->i_mapping
block_device: add a pointer to struct address_space (page cache of bdev)
missing helpers: bdev_unhash(), bdev_drop()
block: move two helpers into bdev.c
block2mtd: prevent direct access of bd_inode
dm-vdo: use bdev_nr_bytes(bdev) instead of i_size_read(bdev->bd_inode)
blkdev_write_iter(): saner way to get inode and bdev
bcachefs: remove dead function bdev_sectors()
ext4: remove block_device_ejected()
erofs_buf: store address_space instead of inode
erofs: switch erofs_bread() to passing offset instead of block number
to struct file * and verifying that caller has device
opened exclusively.
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Merge tag 'pull-set_blocksize' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs blocksize updates from Al Viro:
"This gets rid of bogus set_blocksize() uses, switches it over
to be based on a 'struct file *' and verifies that the caller
has the device opened exclusively"
* tag 'pull-set_blocksize' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
make set_blocksize() fail unless block device is opened exclusive
set_blocksize(): switch to passing struct file *
btrfs_get_bdev_and_sb(): call set_blocksize() only for exclusive opens
swsusp: don't bother with setting block size
zram: don't bother with reopening - just use O_EXCL for open
swapon(2): open swap with O_EXCL
swapon(2)/swapoff(2): don't bother with block size
pktcdvd: sort set_blocksize() calls out
bcache_register(): don't bother with set_blocksize()
Fix the allmodconfig 'make W=1' issue:
WARNING: modpost: missing MODULE_DESCRIPTION() in block/t10-pi.o
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240516-md-t10-pi-v1-1-44a3469374aa@quicinc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo: Clean
up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb: Fixes
for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over macros.
The series is "codingstyle: avoid unused parameters for a function-like
macro".
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Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-mm updates from Andrew Morton:
"Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo:
Clean up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb:
Fixes for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over
macros. The series is "codingstyle: avoid unused parameters for a
function-like macro""
* tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (62 commits)
fs/proc: fix softlockup in __read_vmcore
nilfs2: convert BUG_ON() in nilfs_finish_roll_forward() to WARN_ON()
scripts: checkpatch: check unused parameters for function-like macro
Documentation: coding-style: ask function-like macros to evaluate parameters
nilfs2: use __field_struct() for a bitwise field
selftests/kcmp: remove unused open mode
nilfs2: remove calls to folio_set_error() and folio_clear_error()
kernel/watchdog_perf.c: tidy up kerneldoc
watchdog: allow nmi watchdog to use raw perf event
watchdog: handle comma separated nmi_watchdog command line
nilfs2: make superblock data array index computation sparse friendly
squashfs: remove calls to set the folio error flag
squashfs: convert squashfs_symlink_read_folio to use folio APIs
scripts/gdb: fix detection of current CPU in KGDB
scripts/gdb: make get_thread_info accept pointers
scripts/gdb: fix parameter handling in $lx_per_cpu
scripts/gdb: fix failing KGDB detection during probe
kfifo: don't use "proxy" headers
media: stih-cec: add missing io.h
media: rc: add missing io.h
...
Commit a46c27026d ("blk-mq: don't schedule block kworker on isolated CPUs")
rules out isolated CPUs from hctx->cpumask, and hctx->cpumask should only be
used for scheduling kworker.
Add helper blk_mq_cpu_mapped_to_hctx() and apply it into cpuhp handlers.
This patch avoids to forget clearing INACTIVE of hctx state in case that one
isolated CPU becomes online, and fixes hang issue when allocating request
from this hctx's tags.
Cc: Raju Cheerla <rcheerla@redhat.com>
Fixes: a46c27026d ("blk-mq: don't schedule block kworker on isolated CPUs")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240517020514.149771-1-ming.lei@redhat.com
Tested-by: Raju Cheerla <rcheerla@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
During a cgroup_rstat_flush() call, the lowest level of nodes are flushed
first before their parents. Since commit 3b8cc62987 ("blk-cgroup:
Optimize blkcg_rstat_flush()"), iostat propagation was still done to
the parent. Grandparent, however, may not get the iostat update if the
parent has no blkg_iostat_set queued in its lhead lockless list.
Fix this iostat propagation problem by queuing the parent's global
blkg->iostat into one of its percpu lockless lists to make sure that
the delta will always be propagated up to the grandparent and so on
toward the root blkcg.
Note that successive calls to __blkcg_rstat_flush() are serialized by
the cgroup_rstat_lock. So no special barrier is used in the reading
and writing of blkg->iostat.lqueued.
Fixes: 3b8cc62987 ("blk-cgroup: Optimize blkcg_rstat_flush()")
Reported-by: Dan Schatzberg <schatzberg.dan@gmail.com>
Closes: https://lore.kernel.org/lkml/ZkO6l%2FODzadSgdhC@dschatzberg-fedora-PF3DHTBV/
Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20240515143059.276677-1-longman@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start
is being executed.
If WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in
the loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one
stat instance being added in blk_cgroup_bio_start(), then the local
list in __blkcg_rstat_flush() could be corrupted.
Fix the issue by adding one barrier.
Cc: Tejun Heo <tj@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Fixes: 3b8cc62987 ("blk-cgroup: Optimize blkcg_rstat_flush()")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240515013157.443672-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Since commit 3b8cc62987 ("blk-cgroup: Optimize blkcg_rstat_flush()"),
each iostat instance is added to blkcg percpu list, so blkcg_reset_stats()
can't reset the stat instance by memset(), otherwise the llist may be
corrupted.
Fix the issue by only resetting the counter part.
Cc: Tejun Heo <tj@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Jay Shin <jaeshin@redhat.com>
Fixes: 3b8cc62987 ("blk-cgroup: Optimize blkcg_rstat_flush()")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/20240515013157.443672-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Updates to the usual drivers (ufs, lpfc, qla2xxx, mpi3mr, libsas).
The major update (which causes a conflict with block, see below) is
Christoph removing the queue limits and their associated block
helpers. The remaining patches are assorted minor fixes and
deprecated function updates plus a bit of constification.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (ufs, lpfc, qla2xxx, mpi3mr, libsas).
The major update (which causes a conflict with block, see below) is
Christoph removing the queue limits and their associated block
helpers.
The remaining patches are assorted minor fixes and deprecated function
updates plus a bit of constification"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
scsi: mpi3mr: Sanitise num_phys
scsi: lpfc: Copyright updates for 14.4.0.2 patches
scsi: lpfc: Update lpfc version to 14.4.0.2
scsi: lpfc: Add support for 32 byte CDBs
scsi: lpfc: Change lpfc_hba hba_flag member into a bitmask
scsi: lpfc: Introduce rrq_list_lock to protect active_rrq_list
scsi: lpfc: Clear deferred RSCN processing flag when driver is unloading
scsi: lpfc: Update logging of protection type for T10 DIF I/O
scsi: lpfc: Change default logging level for unsolicited CT MIB commands
scsi: target: Remove unused list 'device_list'
scsi: iscsi: Remove unused list 'connlist_err'
scsi: ufs: exynos: Add support for Tensor gs101 SoC
scsi: ufs: exynos: Add some pa_dbg_ register offsets into drvdata
scsi: ufs: exynos: Allow max frequencies up to 267Mhz
scsi: ufs: exynos: Add EXYNOS_UFS_OPT_TIMER_TICK_SELECT option
scsi: ufs: exynos: Add EXYNOS_UFS_OPT_UFSPR_SECURE option
scsi: ufs: dt-bindings: exynos: Add gs101 compatible
scsi: qla2xxx: Fix debugfs output for fw_resource_count
scsi: qedf: Ensure the copied buf is NUL terminated
scsi: bfa: Ensure the copied buf is NUL terminated
...
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Merge tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"This update brings a few minor performance improvements, otherwise
there's a lot of refactoring, cleanups and other sort of not user
visible changes.
Performance improvements:
- inline b-tree locking functions, improvement in metadata-heavy
changes
- relax locking on a range that's being reflinked, allows read
operations to run in parallel
- speed up NOCOW write checks (throughput +9% on a sample test)
- extent locking ranges have been reduced in several places, namely
around delayed ref processing
Core:
- more page to folio conversions:
- relocation
- send
- compression
- inline extent handling
- super block write and wait
- extent_map structure optimizations:
- reduced structure size
- code simplifications
- add shrinker for allocated objects, the numbers can go high and
could exhaust memory on smaller systems (reported) as they may
not get an opportunity to be freed fast enough
- extent locking optimizations:
- reduce locking ranges where it does not seem to be necessary and
are safe due to other means of synchronization
- potential improvements due to lower contention,
allocation/freeing and state management operations of extent
state tracking structures
- delayed ref cleanups and simplifications
- updated trace points
- improved error handling, warnings and assertions
- cleanups and refactoring, unification of error handling paths"
* tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (122 commits)
btrfs: qgroup: fix initialization of auto inherit array
btrfs: count super block write errors in device instead of tracking folio error state
btrfs: use the folio iterator in btrfs_end_super_write()
btrfs: convert super block writes to folio in write_dev_supers()
btrfs: convert super block writes to folio in wait_dev_supers()
bio: Export bio_add_folio_nofail to modules
btrfs: remove duplicate included header from fs.h
btrfs: add a cached state to extent_clear_unlock_delalloc
btrfs: push extent lock down in submit_one_async_extent
btrfs: push lock_extent down in cow_file_range()
btrfs: move can_cow_file_range_inline() outside of the extent lock
btrfs: push lock_extent into cow_file_range_inline
btrfs: push extent lock into cow_file_range
btrfs: push extent lock into run_delalloc_cow
btrfs: remove unlock_extent from run_delalloc_compressed
btrfs: push extent lock down in run_delalloc_nocow
btrfs: adjust while loop condition in run_delalloc_nocow
btrfs: push extent lock into run_delalloc_nocow
btrfs: push the extent lock into btrfs_run_delalloc_range
btrfs: lock extent when doing inline extent in compression
...
