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For internal callers, aborted are always set to false, while for
external callers, aborted are always set to true.
Hence there is no need to always pass in true for exported api.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-27-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.
Also fix lots of code style.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-26-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible. And change the type
of 'success' and 'behind' from int to bool.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-25-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible. And change the type
of 'behind' from int to bool.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-24-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.
And while we're here, also fix coding style for bitmap_store().
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-23-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-22-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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md_bitmap_setallbits() is not used, hence can be removed.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-21-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-20-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-19-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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md_bitmap_print_sb() is only used inside md-bitmap.c, hence make it
static, also rename it to bitmap_print_sb.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-18-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-17-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-16-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-15-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-14-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Other than internal api get_bitmap_from_slot(), all other places will
set returned bitmap to mddev->bitmap. So move the setting of
mddev->bitmap into md_bitmap_create() to simplify code.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-13-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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The structure is empty for now, and will be used in later patches to
merge in bitmap operations, so that bitmap implementation won't be
exposed.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-12-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Currently md-cluster will set bitmap->counts.pages directly, add a
helper to do this to avoid dereferencing bitmap directly.
Noted that after this patch bitmap is not dereferenced directly anymore
and following patches will move the structure inside md-bitmap.c.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-11-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Use the existed helper instead of open coding it, avoid dereferencing
bitmap directly to prepare inventing a new bitmap.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-10-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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There are no functional changes, avoid dereferencing bitmap directly to
prepare inventing a new bitmap.
Also fix following checkpatch warning by using wq_has_sleeper().
WARNING: waitqueue_active without comment
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-9-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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There are no functional changes, avoid dereferencing bitmap directly to
prepare inventing a new bitmap.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-8-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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To avoid dereferencing bitmap directly in md-cluster to prepare
inventing a new bitmap.
BTW, also fix following checkpatch warnings:
WARNING: Deprecated use of 'kmap_atomic', prefer 'kmap_local_page' instead
WARNING: Deprecated use of 'kunmap_atomic', prefer 'kunmap_local' instead
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-7-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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drivers/md/md-cluster.c:1220:22: warning: incorrect type in assignment (different base types)
drivers/md/md-cluster.c:1220:22: expected unsigned long my_sync_size
drivers/md/md-cluster.c:1220:22: got restricted __le64 [usertype] sync_size
drivers/md/md-cluster.c:1252:35: warning: incorrect type in assignment (different base types)
drivers/md/md-cluster.c:1252:35: expected unsigned long sync_size
drivers/md/md-cluster.c:1252:35: got restricted __le64 [usertype] sync_size
drivers/md/md-cluster.c:1253:41: warning: restricted __le64 degrades to integer
Fix the warnings by using le64_to_cpu() to convet __le64 to integer.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-6-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Also add a new helper to get events_cleared to avoid dereferencing
bitmap directly to prepare inventing a new bitmap.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-5-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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There are no functional changes, avoid dereferencing bitmap directly to
prepare inventing a new bitmap.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-4-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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There are no functional changes, and the new helper will be used in
multiple places in following patches to avoid dereferencing bitmap
directly.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-3-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Use the existed helper instead of open coding it to make the code cleaner.
There are no functional changes, and also avoid dereferencing bitmap
directly to prepare inventing a new bitmap.
Noted that this patch also export md_bitmap_wait_behind_writes(), which
is necessary for now, and the exported api will be removed in following
patches to convert bitmap apis into ops.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-2-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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The local variable will only be used onced, in the error path that
read_balance() failed to find a valid rdev to read. Since now the rdev
is ensured can't be removed from conf while IO is still pending,
remove the local variable and dereference rdev directly.
Since we're here, also remove an extra empty line, and unnecessary
type conversion from sector_t(u64) to unsigned long long.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240801133008.459998-1-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Because flush sync_work may trigger mddev_suspend() if there are spares,
and this should never be done in IO path because mddev_suspend() is used
to wait for IO.
This problem is found by code review.
Fixes: bc08041b32ab ("md: suspend array in md_start_sync() if array need reconfiguration")
Cc: stable@vger.kernel.org
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240801124746.242558-1-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
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Remove the debugfs_create_dir() error check. It's safe to pass in error
pointers to the debugfs API, hence the user isn't supposed to include
error checking of the return values.
Signed-off-by: Yang Ruibin <11162571@vivo.com>
Link: https://lore.kernel.org/r/20240827022741.3410294-1-11162571@vivo.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Recently running UBSAN caught few out of bound shifts in the
ioc_forgive_debts() function:
UBSAN: shift-out-of-bounds in block/blk-iocost.c:2142:38
shift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long
long')
...
UBSAN: shift-out-of-bounds in block/blk-iocost.c:2144:30
shift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long
long')
...
Call Trace:
<IRQ>
dump_stack_lvl+0xca/0x130
__ubsan_handle_shift_out_of_bounds+0x22c/0x280
? __lock_acquire+0x6441/0x7c10
ioc_timer_fn+0x6cec/0x7750
? blk_iocost_init+0x720/0x720
? call_timer_fn+0x5d/0x470
call_timer_fn+0xfa/0x470
? blk_iocost_init+0x720/0x720
__run_timer_base+0x519/0x700
...
Actual impact of this issue was not identified but I propose to fix the
undefined behaviour.
The proposed fix to prevent those out of bound shifts consist of
precalculating exponent before using it the shift operations by taking
min value from the actual exponent and maximum possible number of bits.
Reported-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Konstantin Ovsepian <ovs@ovs.to>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20240822154137.2627818-1-ovs@ovs.to
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Rename apptag and appmask to lbat and lbatm so that it matches the field
names used in NVMe spec.
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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When sending a RDMA_CM_REQUEST, the NVMe RDMA Transport Specification
allows you to populate the cntlid field in the RDMA_CM_REQUEST Private
Data.
The cntlid is returned by the target on completion of the first
RDMA_CM_REQUEST command (which creates the admin queue).
The cntlid field can then be populated by the host when the I/O queues
are created (using additional RDMA_CM_REQUEST commands), such that the
target can perform extra validation for additional RDMA_CM_REQUEST
commands.
This additional error code and error message is also added, such that
nvme_rdma_cm_msg() will display the proper error message if the target
fails the RDMA_CM_REQUEST command because of this extra validation.
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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'next_barrier_nr' is not used in this driver. Remove it.
It was already part of the original commit b411b3637fa7 ("The DRBD driver")
Apparently, it has never been used.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/d5322ef88d1d6f544963ee277cb0b427da8dceef.1724602922.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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nvmet_check_ctrl_status() checks the authentication status, so
we don't need to do that prior to calling it.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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As we can set DH-HMAC-CHAP keys, we should also be
able to unset them.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Add a 'tls_keyring' attribute to display the contents of the
--keyring option from the connect string. Adding this attribute
allows us to recreate the original connect string from sysfs
settings.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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There is a difference between the negotiated TLS key (which is
always present for a TLS encrypted connection) and the configured
TLS key (which is specified with the --tls_key command line option).
To differentate between these two add a new sysfs attribute
'tls_configured_key' to hold the specified on the command line.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Split off TLS sysfs attributes into a separate group to improve
readability and to keep all TLS related handling in one section.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Print a newline for easier userspace handling.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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key_lookup() will always return a key, even if that key is revoked
or invalidated. So check for invalid keys before continuing.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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There is a difference between TLS configured (ie the user has
provisioned/requested a key) and TLS enabled (ie the connection
is encrypted with TLS). This becomes important for secure concatenation,
where the initial authentication is run on an unencrypted connection
(ie with TLS configured, but not enabled), and then the queue is reset to
run over TLS (ie TLS configured _and_ enabled).
So to differentiate between those two states store the generated
key in opts->tls_key (as we're using the same TLS key for all queues),
the key serial of the resulting TLS handshake in ctrl->tls_pskid
(to signal that TLS on the admin queue is enabled), and a simple
flag for the queues to indicated that TLS has been enabled.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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TP8018 introduced a new TLS PSK identifier version (version 1), which appended
a PSK hash value to the existing identifier (cf NVMe TCP specification v1.1,
section 3.6.1.3 'TLS PSK and PSK Identity Derivation').
An original (version 0) identifier has the form:
NVMe0<type><hmac> <hostnqn> <subsysnqn>
and a version 1 identifier has the form:
NVMe1<type><hmac> <hostnqn> <subsysnqn> <hash>
This patch modifies the lookup algorthm to compare only the first part
of the identifier (excluding the hash value) to handle both version 0 and
version 1 identifiers.
And the spec declares 'version 0' identifiers obsolete, so the lookup
algorithm is modified to prever v1 identifiers.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Use async function calls to make namespace scanning happen in parallel.
Without the patch, NVME namespaces are scanned serially, so it can take
a long time for all of a controller's namespaces to become available,
especially with a slower (TCP) interface with large number of
namespaces.
It is not uncommon to have large numbers (hundreds or thousands) of
namespaces on nvme-of with storage servers.
The time it took for all namespaces to show up after connecting (via
TCP) to a controller with 1002 namespaces was measured on one system:
network latency without patch with patch
0 6s 1s
50ms 210s 10s
100ms 417s 18s
Measurements taken on another system show the effect of the patch on the
time nvme_scan_work() took to complete, when connecting to a linux
nvme-of target with varying numbers of namespaces, on a network of
400us.
namespaces without patch with patch
1 16ms 14ms
2 24ms 16ms
4 49ms 22ms
8 101ms 33ms
16 207ms 56ms
100 1.4s 0.6s
1000 12.9s 2.0s
On the same system, connecting to a local PCIe NVMe drive (a Samsung
PM1733) instead of a network target:
namespaces without patch with patch
1 13ms 12ms
2 41ms 13ms
Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
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Commit bb7e5a193d8b ("block, bfq: remove blkg_path()") removed the
implementation but leave declaration.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20240816095821.877842-1-yuehaibing@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Replace a comma between expression statements by a semicolon.
Fixes: 5e5702898e93 ("md/raid10: Handle read errors during recovery better.")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://lore.kernel.org/r/20240716025852.400259-1-nichen@iscas.ac.cn
Signed-off-by: Song Liu <song@kernel.org>
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This function doesn't mutate data.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/d24611b3-dddf-473a-903d-39290db03b11@p183
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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It is not possible to build t10-pi.ko anymore.
This file doesn't even export functions.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/216ccc79-5b80-47b2-b507-990951aa810c@p183
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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ublk zoned takes 16 bytes in each request pdu just for handling REPORT_ZONE
operation, this way does waste memory since request pdu is allocated
statically.
Store the transient zone report data into one global xarray, and remove
it after the report zone request is completed. This way is reasonable
since report zone is run in slow code path.
Fixes: 29802d7ca33b ("ublk: enable zoned storage support")
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240812013624.587587-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Commit b411b3637fa7 ("The DRBD driver") declared but never implemented
drbd_read_remote(), is_valid_ar_handle() and drbd_set_recv_tcq().
And commit 668700b40a7c ("drbd: Create a dedicated workqueue for sending acks on the control connection")
never implemented drbd_send_ping_wf().
Commit 2451fc3b2bd3 ("drbd: Removed the BIO_RW_BARRIER support form the receiver/epoch code")
leave w_e_reissue() declaration unused.
Commit 8fe605513ab4 ("drbd: Rename drbdd_init() -> drbd_receiver()")
rename drbdd_init() and leave unsued declaration. Also drbd_asender() is removed in
commit 1c03e52083c8 ("drbd: Rename asender to ack_receiver").
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20240802095147.2788218-1-yuehaibing@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The NBD protocol defines the flag NBD_FLAG_ROTATIONAL to flag that the
export in use should be treated as a rotational device.
Add support for that flag to the kernel driver.
Signed-off-by: Wouter Verhelst <w@uter.be>
Reviewed-by: Eric Blake <eblake@redhat.com>
Link: https://lore.kernel.org/r/20240725164536.1275851-1-w@uter.be
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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