03 Jul, 2020
1 commit
-
Fix sparse build warning:
block/bio-integrity.c:27:6: warning:
symbol '__bio_integrity_free' was not declared. Should it be static?Signed-off-by: Wei Yongjun
Signed-off-by: Jens Axboe
24 Jun, 2020
1 commit
-
Release bip using kfree() in error path when that was allocated
by kmalloc().Signed-off-by: Chengguang Xu
Reviewed-by: Christoph Hellwig
Acked-by: Martin K. Petersen
Signed-off-by: Jens Axboe
03 Jun, 2020
1 commit
-
commit e7bf90e5afe3 ("block/bio-integrity: fix a memory leak bug") added
a kfree() for 'buf' if bio_integrity_add_page() returns '0'. However,
the object will be freed in bio_integrity_free() since 'bio->bi_opf' and
'bio->bi_integrity' were set previousy in bio_integrity_alloc().Fixes: commit e7bf90e5afe3 ("block/bio-integrity: fix a memory leak bug")
Signed-off-by: yu kuai
Reviewed-by: Ming Lei
Reviewed-by: Bob Liu
Acked-by: Martin K. Petersen
Signed-off-by: Jens Axboe
14 May, 2020
1 commit
-
Whenever a device supports blk-integrity, make the kernel pretend that
the device doesn't support inline encryption (essentially by setting the
keyslot manager in the request queue to NULL).There's no hardware currently that supports both integrity and inline
encryption. However, it seems possible that there will be such hardware
in the near future (like the NVMe key per I/O support that might support
both inline encryption and PI).But properly integrating both features is not trivial, and without
real hardware that implements both, it is difficult to tell if it will
be done correctly by the majority of hardware that support both.
So it seems best not to support both features together right now, and
to decide what to do at probe time.Signed-off-by: Satya Tangirala
Reviewed-by: Eric Biggers
Reviewed-by: Christoph Hellwig
Signed-off-by: Jens Axboe
06 Dec, 2019
1 commit
-
7c20f11680a4 ("bio-integrity: stop abusing bi_end_io") moves
bio_integrity_free from bio_uninit() to bio_integrity_verify_fn()
and bio_endio(). This way looks wrong because bio may be freed
without calling bio_endio(), for example, blk_rq_unprep_clone() is
called from dm_mq_queue_rq() when the underlying queue of dm-mpath
is busy.So memory leak of bio integrity data is caused by commit 7c20f11680a4.
Fixes this issue by re-adding bio_integrity_free() to bio_uninit().
Fixes: 7c20f11680a4 ("bio-integrity: stop abusing bi_end_io")
Reviewed-by: Christoph Hellwig
Signed-off-by Justin TeeAdd commit log, and simplify/fix the original patch wroten by Justin.
Signed-off-by: Ming Lei
Signed-off-by: Jens Axboe
12 Jul, 2019
1 commit
-
In bio_integrity_prep(), a kernel buffer is allocated through kmalloc() to
hold integrity metadata. Later on, the buffer will be attached to the bio
structure through bio_integrity_add_page(), which returns the number of
bytes of integrity metadata attached. Due to unexpected situations,
bio_integrity_add_page() may return 0. As a result, bio_integrity_prep()
needs to be terminated with 'false' returned to indicate this error.
However, the allocated kernel buffer is not freed on this execution path,
leading to a memory leak.To fix this issue, free the allocated buffer before returning from
bio_integrity_prep().Reviewed-by: Ming Lei
Acked-by: Martin K. Petersen
Signed-off-by: Wenwen Wang
Signed-off-by: Jens Axboe
16 May, 2019
1 commit
-
Use the new struct_size() helper to keep code simple.
Reviewed-by: Chaitanya Kulkarni
Signed-off-by: Jackie Liu
Signed-off-by: Jens Axboe
01 May, 2019
1 commit
-
All these files have some form of the usual GPLv2 boilerplate. Switch
them to use SPDX tags instead.Reviewed-by: Chaitanya Kulkarni
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
16 Dec, 2018
2 commits
-
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
07 Sep, 2018
1 commit
-
It is pointed that bio_rewind_iter() is one very bad API[1]:
1) bio size may not be restored after rewinding
2) it causes some bogus change, such as 5151842b9d8732 (block: reset
bi_iter.bi_done after splitting bio)3) rewinding really makes things complicated wrt. bio splitting
4) unnecessary updating of .bi_done in fast path
[1] https://marc.info/?t=153549924200005&r=1&w=2
So this patch takes Kent's suggestion to restore one bio into its original
state via saving bio iterator(struct bvec_iter) in bio_integrity_prep(),
given now bio_rewind_iter() is only used by bio integrity code.Cc: Dmitry Monakhov
Cc: Hannes Reinecke
Suggested-by: Kent Overstreet
Acked-by: Kent Overstreet
Reviewed-by: Christoph Hellwig
Signed-off-by: Ming Lei
Signed-off-by: Jens Axboe
27 Jul, 2018
1 commit
-
This allows bio_integrity_bytes() to be called from drivers instead of
open coding it.Acked-by: Martin K. Petersen
Signed-off-by: Greg Edwards
Signed-off-by: Jens Axboe
15 May, 2018
1 commit
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Minor performance improvement by getting rid of pointer indirections
from allocation/freeing fastpaths.Signed-off-by: Kent Overstreet
Signed-off-by: Jens Axboe
18 Jan, 2018
1 commit
-
Fixes: 4246a0b63bd8 ("block: add a bi_error field to struct bio")
Reviewed-by: Martin K. Petersen
Signed-off-by: Bart Van Assche
Signed-off-by: Jens Axboe
07 Oct, 2017
1 commit
-
mempool_destroy() already checks for a NULL value being passed in, this
eliminates duplicate checks.This was caught by running make coccicheck M=block/ on linus' tree on
commit 77ede3a014a32746002f7889211f0cecf4803163 (current head as of this
patch).Reviewed-by: Kyle Fortin
Acked-by: Martin K. Petersen
Signed-off-by: Tim Hansen
Signed-off-by: Jens Axboe
08 Sep, 2017
1 commit
-
Pull block layer updates from Jens Axboe:
"This is the first pull request for 4.14, containing most of the code
changes. It's a quiet series this round, which I think we needed after
the churn of the last few series. This contains:- Fix for a registration race in loop, from Anton Volkov.
- Overflow complaint fix from Arnd for DAC960.
- Series of drbd changes from the usual suspects.
- Conversion of the stec/skd driver to blk-mq. From Bart.
- A few BFQ improvements/fixes from Paolo.
- CFQ improvement from Ritesh, allowing idling for group idle.
- A few fixes found by Dan's smatch, courtesy of Dan.
- A warning fixup for a race between changing the IO scheduler and
device remova. From David Jeffery.- A few nbd fixes from Josef.
- Support for cgroup info in blktrace, from Shaohua.
- Also from Shaohua, new features in the null_blk driver to allow it
to actually hold data, among other things.- Various corner cases and error handling fixes from Weiping Zhang.
- Improvements to the IO stats tracking for blk-mq from me. Can
drastically improve performance for fast devices and/or big
machines.- Series from Christoph removing bi_bdev as being needed for IO
submission, in preparation for nvme multipathing code.- Series from Bart, including various cleanups and fixes for switch
fall through case complaints"* 'for-4.14/block' of git://git.kernel.dk/linux-block: (162 commits)
kernfs: checking for IS_ERR() instead of NULL
drbd: remove BIOSET_NEED_RESCUER flag from drbd_{md_,}io_bio_set
drbd: Fix allyesconfig build, fix recent commit
drbd: switch from kmalloc() to kmalloc_array()
drbd: abort drbd_start_resync if there is no connection
drbd: move global variables to drbd namespace and make some static
drbd: rename "usermode_helper" to "drbd_usermode_helper"
drbd: fix race between handshake and admin disconnect/down
drbd: fix potential deadlock when trying to detach during handshake
drbd: A single dot should be put into a sequence.
drbd: fix rmmod cleanup, remove _all_ debugfs entries
drbd: Use setup_timer() instead of init_timer() to simplify the code.
drbd: fix potential get_ldev/put_ldev refcount imbalance during attach
drbd: new disk-option disable-write-same
drbd: Fix resource role for newly created resources in events2
drbd: mark symbols static where possible
drbd: Send P_NEG_ACK upon write error in protocol != C
drbd: add explicit plugging when submitting batches
drbd: change list_for_each_safe to while(list_first_entry_or_null)
drbd: introduce drbd_recv_header_maybe_unplug
...
24 Aug, 2017
2 commits
-
In dm-integrity target we register integrity profile that have
both generate_fn and verify_fn callbacks set to NULL.This is used if dm-integrity is stacked under a dm-crypt device
for authenticated encryption (integrity payload contains authentication
tag and IV seed).In this case the verification is done through own crypto API
processing inside dm-crypt; integrity profile is only holder
of these data. (And memory is owned by dm-crypt as well.)After the commit (and previous changes)
Commit 7c20f11680a441df09de7235206f70115fbf6290
Author: Christoph Hellwig
Date: Mon Jul 3 16:58:43 2017 -0600bio-integrity: stop abusing bi_end_io
we get this crash:
: BUG: unable to handle kernel NULL pointer dereference at (null)
: IP: (null)
: *pde = 00000000
...
:
: Workqueue: kintegrityd bio_integrity_verify_fn
: task: f48ae180 task.stack: f4b5c000
: EIP: (null)
: EFLAGS: 00210286 CPU: 0
: EAX: f4b5debc EBX: 00001000 ECX: 00000001 EDX: 00000000
: ESI: 00001000 EDI: ed25f000 EBP: f4b5dee8 ESP: f4b5dea4
: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
: CR0: 80050033 CR2: 00000000 CR3: 32823000 CR4: 001406d0
: Call Trace:
: ? bio_integrity_process+0xe3/0x1e0
: bio_integrity_verify_fn+0xea/0x150
: process_one_work+0x1c7/0x5c0
: worker_thread+0x39/0x380
: kthread+0xd6/0x110
: ? process_one_work+0x5c0/0x5c0
: ? kthread_worker_fn+0x100/0x100
: ? kthread_worker_fn+0x100/0x100
: ret_from_fork+0x19/0x24
: Code: Bad EIP value.
: EIP: (null) SS:ESP: 0068:f4b5dea4
: CR2: 0000000000000000Patch just skip the whole verify workqueue if verify_fn is set to NULL.
Fixes: 7c20f116 ("bio-integrity: stop abusing bi_end_io")
Signed-off-by: Milan Broz
[hch: trivial whitespace fix]
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
This way we don't need a block_device structure to submit I/O. The
block_device has different life time rules from the gendisk and
request_queue and is usually only available when the block device node
is open. Other callers need to explicitly create one (e.g. the lightnvm
passthrough code, or the new nvme multipathing code).For the actual I/O path all that we need is the gendisk, which exists
once per block device. But given that the block layer also does
partition remapping we additionally need a partition index, which is
used for said remapping in generic_make_request.Note that all the block drivers generally want request_queue or
sometimes the gendisk, so this removes a layer of indirection all
over the stack.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
10 Aug, 2017
3 commits
-
This gets us back to the behavior in 4.12 and earlier.
Signed-off-by: Christoph Hellwig
Fixes: 7c20f116 ("bio-integrity: stop abusing bi_end_io")
Signed-off-by: Jens Axboe -
In dm-integrity target we register integrity profile that have
both generate_fn and verify_fn callbacks set to NULL.This is used if dm-integrity is stacked under a dm-crypt device
for authenticated encryption (integrity payload contains authentication
tag and IV seed).In this case the verification is done through own crypto API
processing inside dm-crypt; integrity profile is only holder
of these data. (And memory is owned by dm-crypt as well.)After the commit (and previous changes)
Commit 7c20f11680a441df09de7235206f70115fbf6290
Author: Christoph Hellwig
Date: Mon Jul 3 16:58:43 2017 -0600bio-integrity: stop abusing bi_end_io
we get this crash:
: BUG: unable to handle kernel NULL pointer dereference at (null)
: IP: (null)
: *pde = 00000000
...
:
: Workqueue: kintegrityd bio_integrity_verify_fn
: task: f48ae180 task.stack: f4b5c000
: EIP: (null)
: EFLAGS: 00210286 CPU: 0
: EAX: f4b5debc EBX: 00001000 ECX: 00000001 EDX: 00000000
: ESI: 00001000 EDI: ed25f000 EBP: f4b5dee8 ESP: f4b5dea4
: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
: CR0: 80050033 CR2: 00000000 CR3: 32823000 CR4: 001406d0
: Call Trace:
: ? bio_integrity_process+0xe3/0x1e0
: bio_integrity_verify_fn+0xea/0x150
: process_one_work+0x1c7/0x5c0
: worker_thread+0x39/0x380
: kthread+0xd6/0x110
: ? process_one_work+0x5c0/0x5c0
: ? kthread_worker_fn+0x100/0x100
: ? kthread_worker_fn+0x100/0x100
: ret_from_fork+0x19/0x24
: Code: Bad EIP value.
: EIP: (null) SS:ESP: 0068:f4b5dea4
: CR2: 0000000000000000Patch just skip the whole verify workqueue if verify_fn is set to NULL.
Fixes: 7c20f116 ("bio-integrity: stop abusing bi_end_io")
Signed-off-by: Milan Broz
[hch: trivial whitespace fix]
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
This makes the code more obvious, and moves the most likely branch first
in the function.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
05 Jul, 2017
1 commit
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block/bio-integrity.c:318:10-11: WARNING: return of 0/1 in function 'bio_integrity_prep' with return type bool
Return statements in functions returning bool should use
true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocciFixes: e23947bd76f0 ("bio-integrity: fold bio_integrity_enabled to bio_integrity_prep")
CC: Dmitry Monakhov
Signed-off-by: Fengguang Wu
Signed-off-by: Jens Axboe
04 Jul, 2017
5 commits
-
And instead call directly into the integrity code from bio_end_io.
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
Currently ->verify_fn not woks at all because at the moment it is called
bio->bi_iter.bi_size == 0, so we do not iterate integrity bvecs at all.In order to perform verification we need to know original data vector,
with new bvec rewind API this is trivial.testcase: https://github.com/dmonakhov/xfstests/commit/3c6509eaa83b9c17cd0bc95d73fcdd76e1c54a85
Reviewed-by: Hannes Reinecke
Reviewed-by: Christoph Hellwig
Signed-off-by: Dmitry Monakhov
[hch: adopted for new status values]
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
Currently all integrity prep hooks are open-coded, and if prepare fails
we ignore it's code and fail bio with EIO. Let's return real error to
upper layer, so later caller may react accordingly.In fact no one want to use bio_integrity_prep() w/o bio_integrity_enabled,
so it is reasonable to fold it in to one function.Signed-off-by: Dmitry Monakhov
Reviewed-by: Martin K. Petersen
[hch: merged with the latest block tree,
return bool from bio_integrity_prep]
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
bio_integrity_trim inherent it's interface from bio_trim and accept
offset and size, but this API is error prone because data offset
must always be insync with bio's data offset. That is why we have
integrity update hook in bio_advance()So only meaningful values are: offset == 0, sectors == bio_sectors(bio)
Let's just remove them completely.Reviewed-by: Hannes Reinecke
Reviewed-by: Christoph Hellwig
Reviewed-by: Martin K. Petersen
Signed-off-by: Dmitry Monakhov
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
SCSI drivers do care about bip_seed so we must update it accordingly.
Reviewed-by: Hannes Reinecke
Reviewed-by: Christoph Hellwig
Reviewed-by: Martin K. Petersen
Signed-off-by: Dmitry Monakhov
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
12 Jun, 2017
1 commit
-
We've already got a few conflicts and upcoming work depends on some of the
changes that have gone into mainline as regression fixes for this series.Pull in 4.12-rc5 to resolve these conflicts and make it easier on down stream
trees to continue working on 4.13 changes.Signed-off-by: Jens Axboe
09 Jun, 2017
1 commit
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Replace bi_error with a new bi_status to allow for a clear conversion.
Note that device mapper overloaded bi_error with a private value, which
we'll have to keep arround at least for now and thus propagate to a
proper blk_status_t value.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
03 Jun, 2017
1 commit
-
If bio has no data, such as ones from blkdev_issue_flush(),
then we have nothing to protect.This patch prevent bugon like follows:
kfree_debugcheck: out of range ptr ac1fa1d106742a5ah
kernel BUG at mm/slab.c:2773!
invalid opcode: 0000 [#1] SMP
Modules linked in: bcache
CPU: 0 PID: 4428 Comm: xfs_io Tainted: G W 4.11.0-rc4-ext4-00041-g2ef0043-dirty #43
Hardware name: Virtuozzo KVM, BIOS seabios-1.7.5-11.vz7.4 04/01/2014
task: ffff880137786440 task.stack: ffffc90000ba8000
RIP: 0010:kfree_debugcheck+0x25/0x2a
RSP: 0018:ffffc90000babde0 EFLAGS: 00010082
RAX: 0000000000000034 RBX: ac1fa1d106742a5a RCX: 0000000000000007
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88013f3ccb40
RBP: ffffc90000babde8 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000fcb76420 R11: 00000000725172ed R12: 0000000000000282
R13: ffffffff8150e766 R14: ffff88013a145e00 R15: 0000000000000001
FS: 00007fb09384bf40(0000) GS:ffff88013f200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0172f9e40 CR3: 0000000137fa9000 CR4: 00000000000006f0
Call Trace:
kfree+0xc8/0x1b3
bio_integrity_free+0xc3/0x16b
bio_free+0x25/0x66
bio_put+0x14/0x26
blkdev_issue_flush+0x7a/0x85
blkdev_fsync+0x35/0x42
vfs_fsync_range+0x8e/0x9f
vfs_fsync+0x1c/0x1e
do_fsync+0x31/0x4a
SyS_fsync+0x10/0x14
entry_SYSCALL_64_fastpath+0x1f/0xc2Reviewed-by: Christoph Hellwig
Reviewed-by: Hannes Reinecke
Reviewed-by: Martin K. Petersen
Signed-off-by: Dmitry Monakhov
Signed-off-by: Jens Axboe
28 Oct, 2016
1 commit
-
With the addition of the zoned operations the tests in this function
became incorrect. But I think it's much better to just open code the
allow operations in the only caller anyway.Signed-off-by: Christoph Hellwig
Reviewed-by: Shaun Tancheff
Signed-off-by: Jens Axboe
08 Aug, 2016
1 commit
-
Since commit 63a4cc24867d, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.No intended functional changes in this commit.
Signed-off-by: Jens Axboe
27 Jul, 2016
1 commit
-
Pull block driver updates from Jens Axboe:
"This branch also contains core changes. I've come to the conclusion
that from 4.9 and forward, I'll be doing just a single branch. We
often have dependencies between core and drivers, and it's hard to
always split them up appropriately without pulling core into drivers
when that happens.That said, this contains:
- separate secure erase type for the core block layer, from
Christoph.- set of discard fixes, from Christoph.
- bio shrinking fixes from Christoph, as a followup up to the
op/flags change in the core branch.- map and append request fixes from Christoph.
- NVMeF (NVMe over Fabrics) code from Christoph. This is pretty
exciting!- nvme-loop fixes from Arnd.
- removal of ->driverfs_dev from Dan, after providing a
device_add_disk() helper.- bcache fixes from Bhaktipriya and Yijing.
- cdrom subchannel read fix from Vchannaiah.
- set of lightnvm updates from Wenwei, Matias, Johannes, and Javier.
- set of drbd updates and fixes from Fabian, Lars, and Philipp.
- mg_disk error path fix from Bart.
- user notification for failed device add for loop, from Minfei.
- NVMe in general:
+ NVMe delay quirk from Guilherme.
+ SR-IOV support and command retry limits from Keith.
+ fix for memory-less NUMA node from Masayoshi.
+ use UINT_MAX for discard sectors, from Minfei.
+ cancel IO fixes from Ming.
+ don't allocate unused major, from Neil.
+ error code fixup from Dan.
+ use constants for PSDT/FUSE from James.
+ variable init fix from Jay.
+ fabrics fixes from Ming, Sagi, and Wei.
+ various fixes"* 'for-4.8/drivers' of git://git.kernel.dk/linux-block: (115 commits)
nvme/pci: Provide SR-IOV support
nvme: initialize variable before logical OR'ing it
block: unexport various bio mapping helpers
scsi/osd: open code blk_make_request
target: stop using blk_make_request
block: simplify and export blk_rq_append_bio
block: ensure bios return from blk_get_request are properly initialized
virtio_blk: use blk_rq_map_kern
memstick: don't allow REQ_TYPE_BLOCK_PC requests
block: shrink bio size again
block: simplify and cleanup bvec pool handling
block: get rid of bio_rw and READA
block: don't ignore -EOPNOTSUPP blkdev_issue_write_same
block: introduce BLKDEV_DISCARD_ZERO to fix zeroout
NVMe: don't allocate unused nvme_major
nvme: avoid crashes when node 0 is memoryless node.
nvme: Limit command retries
loop: Make user notify for adding loop device failed
nvme-loop: fix nvme-loop Kconfig dependencies
nvmet: fix return value check in nvmet_subsys_alloc()
...
21 Jul, 2016
1 commit
-
Instead of a flag and an index just make sure an index of 0 means
no need to free the bvec array. Also move the constants related
to the bvec pools together and use a consistent naming scheme for
them.Signed-off-by: Christoph Hellwig
Reviewed-by: Johannes Thumshirn
Reviewed-by: Mike Christie
Signed-off-by: Jens Axboe
14 Jun, 2016
1 commit
-
This patch avoids that building with W=1 C=2 triggers the following
warning:block/bio-integrity.c:35:6: warning: symbol 'blk_flush_integrity' was not declared. Should it be static?
Signed-off-by: Bart Van Assche
Signed-off-by: Jens Axboe
09 Dec, 2015
1 commit
-
We recently changed bio_integrity_alloc() to return ERR_PTRs instead of
NULL but these calls were missed.Fixes: 06c1e3902aa7 ('blk-integrity: empty implementation when disabled')
Signed-off-by: Dan Carpenter
Reviewed-by: Johannes Thumshirn
Signed-off-by: Jens Axboe
04 Dec, 2015
1 commit
-
This patch moves the blk_integrity_payload definition outside the
CONFIG_BLK_DEV_INTERITY dependency and provides empty function
implementations when the kernel configuration disables integrity
extensions. This simplifies drivers that make use of these to map user
data so they don't need to repeat the same configuration checks.Signed-off-by: Keith Busch
Updated by Jens to pass an error pointer return from
bio_integrity_alloc(), otherwise if CONFIG_BLK_DEV_INTEGRITY isn't
set, we return a weird ENOMEM from __nvme_submit_user_cmd()
if a meta buffer is set.Signed-off-by: Jens Axboe
22 Oct, 2015
3 commits
-
Since they lack requests to pin the request_queue active, synchronous
bio-based drivers may have in-flight integrity work from
bio_integrity_endio() that is not flushed by blk_freeze_queue(). Flush
that work to prevent races to free the queue and the final usage of the
blk_integrity profile.This is temporary unless/until bio-based drivers start to generically
take a q_usage_counter reference while a bio is in-flight.Cc: Martin K. Petersen
[martin: fix the CONFIG_BLK_DEV_INTEGRITY=n case]
Tested-by: Ross Zwisler
Signed-off-by: Dan Williams
Signed-off-by: Jens Axboe -
The per-device properties in the blk_integrity structure were previously
unsigned short. However, most of the values fit inside a char. The only
exception is the data interval size and we can work around that by
storing it as a power of two.This cuts the size of the dynamic portion of blk_integrity in half.
Signed-off-by: Martin K. Petersen
Reported-by: Christoph Hellwig
Reviewed-by: Sagi Grimberg
Signed-off-by: Dan Williams
Signed-off-by: Jens Axboe -
We previously made a complete copy of a device's data integrity profile
even though several of the fields inside the blk_integrity struct are
pointers to fixed template entries in t10-pi.c.Split the static and per-device portions so that we can reference the
template directly.Signed-off-by: Martin K. Petersen
Reported-by: Christoph Hellwig
Reviewed-by: Sagi Grimberg
Cc: Dan Williams
Signed-off-by: Dan Williams
Signed-off-by: Jens Axboe
