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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Mike writes:
"device mapper fixes
- Fix a DM thinp __udivdi3 undefined on 32-bit bug introduced during
4.19 merge window.
- Fix leak and dangling pointer in DM multipath's scsi_dh related code.
- A couple stable@ fixes for DM cache's resize support.
- A DM raid fix to remove "const" from decipher_sync_action()'s return
type."
* tag 'for-4.19/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: fix resize crash if user doesn't reload cache table
dm cache metadata: ignore hints array being too small during resize
dm raid: remove bogus const from decipher_sync_action() return type
dm mpath: fix attached_handler_name leak and dangling hw_handler_name pointer
dm thin metadata: fix __udivdi3 undefined on 32-bit
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A reload of the cache's DM table is needed during resize because
otherwise a crash will occur when attempting to access smq policy
entries associated with the portion of the cache that was recently
extended.
The reason is cache-size based data structures in the policy will not be
resized, the only way to safely extend the cache is to allow for a
proper cache policy initialization that occurs when the cache table is
loaded. For example the smq policy's space_init(), init_allocator(),
calc_hotspot_params() must be sized based on the extended cache size.
The fix for this is to disallow cache resizes of this pattern:
1) suspend "cache" target's device
2) resize the fast device used for the cache
3) resume "cache" target's device
Instead, the last step must be a full reload of the cache's DM table.
Fixes: 66a636356 ("dm cache: add stochastic-multi-queue (smq) policy")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Commit fd2fa9541 ("dm cache metadata: save in-core policy_hint_size to
on-disk superblock") enabled previously written policy hints to be
used after a cache is reactivated. But in doing so the cache
metadata's hint array was left exposed to out of bounds access because
on resize the metadata's on-disk hint array wasn't ever extended.
Fix this by ignoring that there are no on-disk hints associated with the
newly added cache blocks. An expanded on-disk hint array is later
rewritten upon the next clean shutdown of the cache.
Fixes: fd2fa9541 ("dm cache metadata: save in-core policy_hint_size to on-disk superblock")
Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Jens writes:
"Block fixes for 4.19-rc6
A set of fixes that should go into this release. This pull request
contains:
- A fix (hopefully) for the persistent grants for xen-blkfront. A
previous fix from this series wasn't complete, hence reverted, and
this one should hopefully be it. (Boris Ostrovsky)
- Fix for an elevator drain warning with SMR devices, which is
triggered when you switch schedulers (Damien)
- bcache deadlock fix (Guoju Fang)
- Fix for the block unplug tracepoint, which has had the
timer/explicit flag reverted since 4.11 (Ilya)
- Fix a regression in this series where the blk-mq timeout hook is
invoked with the RCU read lock held, hence preventing it from
blocking (Keith)
- NVMe pull from Christoph, with a single multipath fix (Susobhan Dey)"
* tag 'for-linus-20180929' of git://git.kernel.dk/linux-block:
xen/blkfront: correct purging of persistent grants
Revert "xen/blkfront: When purging persistent grants, keep them in the buffer"
blk-mq: I/O and timer unplugs are inverted in blktrace
bcache: add separate workqueue for journal_write to avoid deadlock
xen/blkfront: When purging persistent grants, keep them in the buffer
block: fix deadline elevator drain for zoned block devices
blk-mq: Allow blocking queue tag iter callbacks
nvme: properly propagate errors in nvme_mpath_init
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After write SSD completed, bcache schedules journal_write work to
system_wq, which is a public workqueue in system, without WQ_MEM_RECLAIM
flag. system_wq is also a bound wq, and there may be no idle kworker on
current processor. Creating a new kworker may unfortunately need to
reclaim memory first, by shrinking cache and slab used by vfs, which
depends on bcache device. That's a deadlock.
This patch create a new workqueue for journal_write with WQ_MEM_RECLAIM
flag. It's rescuer thread will work to avoid the deadlock.
Signed-off-by: Guoju Fang <fangguoju@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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With gcc-4.1.2:
drivers/md/dm-raid.c:3357: warning: type qualifiers ignored on function return type
Remove the "const" keyword to fix this.
Fixes: 36a240a706d43383 ("dm raid: fix RAID leg rebuild errors")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Commit e8f74a0f0011 ("dm mpath: eliminate need to use
scsi_device_from_queue") introduced 2 regressions:
1) memory leak occurs if attached_handler_name is not assigned to
m->hw_handler_name
2) m->hw_handler_name can become a dangling pointer if the
RETAIN_ATTACHED_HW_HANDLER flag is set and scsi_dh_attach() returns
-EBUSY.
Fix both of these by clearing 'attached_handler_name' pointer passed to
setup_scsi_dh() after it is assigned to m->hw_handler_name. And if
setup_scsi_dh() doesn't consume 'attached_handler_name' parse_path()
will kfree() it.
Fixes: e8f74a0f0011 ("dm mpath: eliminate need to use scsi_device_from_queue")
Cc: stable@vger.kernel.org # 4.16+
Reported-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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sector_div() is only viable for use with sector_t.
dm_block_t is typedef'd to uint64_t -- so use div_u64() instead.
Fixes: 3ab918281 ("dm thin metadata: try to avoid ever aborting transactions")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- DM verity fix for crash due to using vmalloc'd buffers with the
asynchronous crypto hadsh API.
- Fix to both DM crypt and DM integrity targets to discontinue using
CRYPTO_TFM_REQ_MAY_SLEEP because its use of GFP_KERNEL can lead to
deadlock by recursing back into a filesystem.
- Various DM raid fixes related to reshape and rebuild races.
- Fix for DM thin-provisioning to avoid data corruption that was a
side-effect of needing to abort DM thin metadata transaction due to
running out of metadata space. Fix is to reserve a small amount of
metadata space so that once it is used the DM thin-pool can finish
its active transaction before switching to read-only mode.
* tag 'for-4.19/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm thin metadata: try to avoid ever aborting transactions
dm raid: bump target version, update comments and documentation
dm raid: fix RAID leg rebuild errors
dm raid: fix rebuild of specific devices by updating superblock
dm raid: fix stripe adding reshape deadlock
dm raid: fix reshape race on small devices
dm: disable CRYPTO_TFM_REQ_MAY_SLEEP to fix a GFP_KERNEL recursion deadlock
dm verity: fix crash on bufio buffer that was allocated with vmalloc
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Committing a transaction can consume some metadata of it's own, we now
reserve a small amount of metadata to cover this. Free metadata
reported by the kernel will not include this reserve.
If any of the reserve has been used after a commit we enter a new
internal state PM_OUT_OF_METADATA_SPACE. This is reported as
PM_READ_ONLY, so no userland changes are needed. If the metadata
device is resized the pool will move back to PM_WRITE.
These changes mean we never need to abort and rollback a transaction due
to running out of metadata space. This is particularly important
because there have been a handful of reports of data corruption against
DM thin-provisioning that can all be attributed to the thin-pool having
ran out of metadata space.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Bump target version to reflect the documented fixes are available.
Also fix some code comments (typos and clarity).
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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On fast devices such as NVMe, a flaw in rs_get_progress() results in
false target status output when userspace lvm2 requests leg rebuilds
(symptom of the failure is device health chars 'aaaaaaaa' instead of
expected 'aAaAAAAA' causing lvm2 to fail).
The correct sync action state definitions already exist in
decipher_sync_action() so fix rs_get_progress() to use it.
Change decipher_sync_action() to return an enum rather than a string for
the sync states and call it from rs_get_progress(). Introduce
sync_str() to translate from enum to the string that is needed by
raid_status().
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Update superblock when particular devices are requested via rebuild
(e.g. lvconvert --replace ...) to avoid spurious failure with the "New
device injected into existing raid set without 'delta_disks' or
'rebuild' parameter specified" error message.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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When initiating a stripe adding reshape, a deadlock between
md_stop_writes() waiting for the sync thread to stop and the running
sync thread waiting for inactive stripes occurs (this frequently happens
on single-core but rarely on multi-core systems).
Fix this deadlock by setting MD_RECOVERY_WAIT to have the main MD
resynchronization thread worker (md_do_sync()) bail out when initiating
the reshape via constructor arguments.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Loading a new mapping table, the dm-raid target's constructor
retrieves the volatile reshaping state from the raid superblocks.
When the new table is activated in a following resume, the actual
reshape position is retrieved. The reshape driven by the previous
mapping can already have finished on small and/or fast devices thus
updating raid superblocks about the new raid layout.
This causes the actual array state (e.g. stripe size reshape finished)
to be inconsistent with the one in the new mapping, causing hangs with
left behind devices.
This race does not occur with usual raid device sizes but with small
ones (e.g. those created by the lvm2 test suite).
Fix by no longer transferring stale/inconsistent raid_set state during
preresume.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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There's a XFS on dm-crypt deadlock, recursing back to itself due to the
crypto subsystems use of GFP_KERNEL, reported here:
https://bugzilla.kernel.org/show_bug.cgi?id=200835
* dm-crypt calls crypt_convert in xts mode
* init_crypt from xts.c calls kmalloc(GFP_KERNEL)
* kmalloc(GFP_KERNEL) recurses into the XFS filesystem, the filesystem
tries to submit some bios and wait for them, causing a deadlock
Fix this by updating both the DM crypt and integrity targets to no
longer use the CRYPTO_TFM_REQ_MAY_SLEEP flag, which will change the
crypto allocations from GFP_KERNEL to GFP_ATOMIC, therefore they can't
recurse into a filesystem. A GFP_ATOMIC allocation can fail, but
init_crypt() in xts.c handles the allocation failure gracefully - it
will fall back to preallocated buffer if the allocation fails.
The crypto API maintainer says that the crypto API only needs to
allocate memory when dealing with unaligned buffers and therefore
turning CRYPTO_TFM_REQ_MAY_SLEEP off is safe (see this discussion:
https://www.redhat.com/archives/dm-devel/2018-August/msg00195.html )
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Since commit d1ac3ff008fb ("dm verity: switch to using asynchronous hash
crypto API") dm-verity uses asynchronous crypto calls for verification,
so that it can use hardware with asynchronous processing of crypto
operations.
These asynchronous calls don't support vmalloc memory, but the buffer data
can be allocated with vmalloc if dm-bufio is short of memory and uses a
reserved buffer that was preallocated in dm_bufio_client_create().
Fix verity_hash_update() so that it deals with vmalloc'd memory
correctly.
Reported-by: "Xiao, Jin" <jin.xiao@intel.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: d1ac3ff008fb ("dm verity: switch to using asynchronous hash crypto API")
Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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All the RESYNC messages are sent with resync lock held, the only
exception is resync_finish which releases resync_lockres before
send the last resync message, this should be changed as well.
Otherwise, we can see deadlock issue as follows:
clustermd2-gqjiang2:~ # cat /proc/mdstat
Personalities : [raid10] [raid1]
md0 : active raid1 sdg[0] sdf[1]
134144 blocks super 1.2 [2/2] [UU]
[===================>.] resync = 99.6% (134144/134144) finish=0.0min speed=26K/sec
bitmap: 1/1 pages [4KB], 65536KB chunk
unused devices: <none>
clustermd2-gqjiang2:~ # ps aux|grep md|grep D
root 20497 0.0 0.0 0 0 ? D 16:00 0:00 [md0_raid1]
clustermd2-gqjiang2:~ # cat /proc/20497/stack
[<ffffffffc05ff51e>] dlm_lock_sync+0x8e/0xc0 [md_cluster]
[<ffffffffc05ff7e8>] __sendmsg+0x98/0x130 [md_cluster]
[<ffffffffc05ff900>] sendmsg+0x20/0x30 [md_cluster]
[<ffffffffc05ffc35>] resync_info_update+0xb5/0xc0 [md_cluster]
[<ffffffffc0593e84>] md_reap_sync_thread+0x134/0x170 [md_mod]
[<ffffffffc059514c>] md_check_recovery+0x28c/0x510 [md_mod]
[<ffffffffc060c882>] raid1d+0x42/0x800 [raid1]
[<ffffffffc058ab61>] md_thread+0x121/0x150 [md_mod]
[<ffffffff9a0a5b3f>] kthread+0xff/0x140
[<ffffffff9a800235>] ret_from_fork+0x35/0x40
[<ffffffffffffffff>] 0xffffffffffffffff
clustermd-gqjiang1:~ # ps aux|grep md|grep D
root 20531 0.0 0.0 0 0 ? D 16:00 0:00 [md0_raid1]
root 20537 0.0 0.0 0 0 ? D 16:00 0:00 [md0_cluster_rec]
root 20676 0.0 0.0 0 0 ? D 16:01 0:00 [md0_resync]
clustermd-gqjiang1:~ # cat /proc/mdstat
Personalities : [raid10] [raid1]
md0 : active raid1 sdf[1] sdg[0]
134144 blocks super 1.2 [2/2] [UU]
[===================>.] resync = 97.3% (131072/134144) finish=8076.8min speed=0K/sec
bitmap: 1/1 pages [4KB], 65536KB chunk
unused devices: <none>
clustermd-gqjiang1:~ # cat /proc/20531/stack
[<ffffffffc080974d>] metadata_update_start+0xcd/0xd0 [md_cluster]
[<ffffffffc079c897>] md_update_sb.part.61+0x97/0x820 [md_mod]
[<ffffffffc079f15b>] md_check_recovery+0x29b/0x510 [md_mod]
[<ffffffffc0816882>] raid1d+0x42/0x800 [raid1]
[<ffffffffc0794b61>] md_thread+0x121/0x150 [md_mod]
[<ffffffff9e0a5b3f>] kthread+0xff/0x140
[<ffffffff9e800235>] ret_from_fork+0x35/0x40
[<ffffffffffffffff>] 0xffffffffffffffff
clustermd-gqjiang1:~ # cat /proc/20537/stack
[<ffffffffc0813222>] freeze_array+0xf2/0x140 [raid1]
[<ffffffffc080a56e>] recv_daemon+0x41e/0x580 [md_cluster]
[<ffffffffc0794b61>] md_thread+0x121/0x150 [md_mod]
[<ffffffff9e0a5b3f>] kthread+0xff/0x140
[<ffffffff9e800235>] ret_from_fork+0x35/0x40
[<ffffffffffffffff>] 0xffffffffffffffff
clustermd-gqjiang1:~ # cat /proc/20676/stack
[<ffffffffc080951e>] dlm_lock_sync+0x8e/0xc0 [md_cluster]
[<ffffffffc080957f>] lock_token+0x2f/0xa0 [md_cluster]
[<ffffffffc0809622>] lock_comm+0x32/0x90 [md_cluster]
[<ffffffffc08098f5>] sendmsg+0x15/0x30 [md_cluster]
[<ffffffffc0809c0a>] resync_info_update+0x8a/0xc0 [md_cluster]
[<ffffffffc08130ba>] raid1_sync_request+0xa9a/0xb10 [raid1]
[<ffffffffc079b8ea>] md_do_sync+0xbaa/0xf90 [md_mod]
[<ffffffffc0794b61>] md_thread+0x121/0x150 [md_mod]
[<ffffffff9e0a5b3f>] kthread+0xff/0x140
[<ffffffff9e800235>] ret_from_fork+0x35/0x40
[<ffffffffffffffff>] 0xffffffffffffffff
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
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In raid10 reshape_request it gets max_sectors in read_balance. If the underlayer disks
have bad blocks, the max_sectors is less than last. It will call goto read_more many
times. It calls raise_barrier(conf, sectors_done != 0) every time. In this condition
sectors_done is not 0. So the value passed to the argument force of raise_barrier is
true.
In raise_barrier it checks conf->barrier when force is true. If force is true and
conf->barrier is 0, it panic. In this case reshape_request submits bio to under layer
disks. And in the callback function of the bio it calls lower_barrier. If the bio
finishes before calling raise_barrier again, it can trigger the BUG_ON.
Add one pair of raise_barrier/lower_barrier to fix this bug.
Signed-off-by: Xiao Ni <xni@redhat.com>
Suggested-by: Neil Brown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
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We don't support reshape yet if an array supports log device. Previously we
determine the fact by checking ->log. However, ->log could be NULL after a log
device is removed, but the array is still marked to support log device. Don't
allow reshape in this case too. User can disable log device support by setting
'consistency_policy' to 'resync' then do reshape.
Reported-by: Xiao Ni <xni@redhat.com>
Tested-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Shaohua Li <shli@fb.com>
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gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dave Jiang:
"Collection of misc libnvdimm patches for 4.19 submission:
- Adding support to read locked nvdimm capacity.
- Change test code to make DSM failure code injection an override.
- Add support for calculate maximum contiguous area for namespace.
- Add support for queueing a short ARS when there is on going ARS for
nvdimm.
- Allow NULL to be passed in to ->direct_access() for kaddr and pfn
params.
- Improve smart injection support for nvdimm emulation testing.
- Fix test code that supports for emulating controller temperature.
- Fix hang on error before devm_memremap_pages()
- Fix a bug that causes user memory corruption when data returned to
user for ars_status.
- Maintainer updates for Ross Zwisler emails and adding Jan Kara to
fsdax"
* tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm: fix ars_status output length calculation
device-dax: avoid hang on error before devm_memremap_pages()
tools/testing/nvdimm: improve emulation of smart injection
filesystem-dax: Do not request kaddr and pfn when not required
md/dm-writecache: Don't request pointer dummy_addr when not required
dax/super: Do not request a pointer kaddr when not required
tools/testing/nvdimm: kaddr and pfn can be NULL to ->direct_access()
s390, dcssblk: kaddr and pfn can be NULL to ->direct_access()
libnvdimm, pmem: kaddr and pfn can be NULL to ->direct_access()
acpi/nfit: queue issuing of ars when an uc error notification comes in
libnvdimm: Export max available extent
libnvdimm: Use max contiguous area for namespace size
MAINTAINERS: Add Jan Kara for filesystem DAX
MAINTAINERS: update Ross Zwisler's email address
tools/testing/nvdimm: Fix support for emulating controller temperature
tools/testing/nvdimm: Make DSM failure code injection an override
acpi, nfit: Prefer _DSM over _LSR for namespace label reads
libnvdimm: Introduce locked DIMM capacity support
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The writeback thread would exit with a lock held when the cache device
is detached via sysfs interface, fix it by releasing the held lock
before exiting the while-loop.
Fixes: fadd94e05c02 (bcache: quit dc->writeback_thread when BCACHE_DEV_DETACHING is set)
Signed-off-by: Shan Hai <shan.hai@oracle.com>
Signed-off-by: Coly Li <colyli@suse.de>
Tested-by: Shenghui Wang <shhuiw@foxmail.com>
Cc: stable@vger.kernel.org #4.17+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull more block updates from Jens Axboe:
- Set of bcache fixes and changes (Coly)
- The flush warn fix (me)
- Small series of BFQ fixes (Paolo)
- wbt hang fix (Ming)
- blktrace fix (Steven)
- blk-mq hardware queue count update fix (Jianchao)
- Various little fixes
* tag 'for-4.19/post-20180822' of git://git.kernel.dk/linux-block: (31 commits)
block/DAC960.c: make some arrays static const, shrinks object size
blk-mq: sync the update nr_hw_queues with blk_mq_queue_tag_busy_iter
blk-mq: init hctx sched after update ctx and hctx mapping
block: remove duplicate initialization
tracing/blktrace: Fix to allow setting same value
pktcdvd: fix setting of 'ret' error return for a few cases
block: change return type to bool
block, bfq: return nbytes and not zero from struct cftype .write() method
block, bfq: improve code of bfq_bfqq_charge_time
block, bfq: reduce write overcharge
block, bfq: always update the budget of an entity when needed
block, bfq: readd missing reset of parent-entity service
blk-wbt: fix IO hang in wbt_wait()
block: don't warn for flush on read-only device
bcache: add the missing comments for smp_mb()/smp_wmb()
bcache: remove unnecessary space before ioctl function pointer arguments
bcache: add missing SPDX header
bcache: move open brace at end of function definitions to next line
bcache: add static const prefix to char * array declarations
bcache: fix code comments style
...
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Now we have crc64 calculation in lib/crc64.c, it is unnecessary for
bcache to use its own version. This patch changes bcache code to use
crc64 routines in lib/crc64.c.
Link: http://lkml.kernel.org/r/20180718165545.1622-3-colyli@suse.de
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Michael Lyle <mlyle@lyle.org>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Noah Massey <noah.massey@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- a new driver for Rohm BU21029 touch controller
- new bitmap APIs: bitmap_alloc, bitmap_zalloc and bitmap_free
- updates to Atmel, eeti. pxrc and iforce drivers
- assorted driver cleanups and fixes.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits)
MAINTAINERS: Add PhoenixRC Flight Controller Adapter
Input: do not use WARN() in input_alloc_absinfo()
Input: mark expected switch fall-throughs
Input: raydium_i2c_ts - use true and false for boolean values
Input: evdev - switch to bitmap API
Input: gpio-keys - switch to bitmap_zalloc()
Input: elan_i2c_smbus - cast sizeof to int for comparison
bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free()
md: Avoid namespace collision with bitmap API
dm: Avoid namespace collision with bitmap API
Input: pm8941-pwrkey - add resin entry
Input: pm8941-pwrkey - abstract register offsets and event code
Input: iforce - reorganize joystick configuration lists
Input: atmel_mxt_ts - move completion to after config crc is updated
Input: atmel_mxt_ts - don't report zero pressure from T9
Input: atmel_mxt_ts - zero terminate config firmware file
Input: atmel_mxt_ts - refactor config update code to add context struct
Input: atmel_mxt_ts - config CRC may start at T71
Input: atmel_mxt_ts - remove unnecessary debug on ENOMEM
Input: atmel_mxt_ts - remove duplicate setup of ABS_MT_PRESSURE
...
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- A couple stable fixes for the DM writecache target.
- A stable fix for the DM cache target that fixes the potential for
data corruption after an unclean shutdown of a cache device using
writeback mode.
- Update DM integrity target to allow the metadata to be stored on a
separate device from data.
- Fix DM kcopyd and the snapshot target to cond_resched() where
appropriate and be more efficient with processing completed work.
- A few fixes and improvements for DM crypt.
- Add DM delay target feature to configure delay of flushes independent
of writes.
- Update DM thin-provisioning target to include metadata_low_watermark
threshold in pool status.
- Fix stale DM thin-provisioning Documentation.
* tag 'for-4.19/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (26 commits)
dm writecache: fix a crash due to reading past end of dirty_bitmap
dm crypt: don't decrease device limits
dm cache metadata: set dirty on all cache blocks after a crash
dm snapshot: remove stale FIXME in snapshot_map()
dm snapshot: improve performance by switching out_of_order_list to rbtree
dm kcopyd: avoid softlockup in run_complete_job
dm cache metadata: save in-core policy_hint_size to on-disk superblock
dm thin: stop no_space_timeout worker when switching to write-mode
dm kcopyd: return void from dm_kcopyd_copy()
dm thin: include metadata_low_watermark threshold in pool status
dm writecache: report start_sector in status line
dm crypt: convert essiv from ahash to shash
dm crypt: use wake_up_process() instead of a wait queue
dm integrity: recalculate checksums on creation
dm integrity: flush journal on suspend when using separate metadata device
dm integrity: use version 2 for separate metadata
dm integrity: allow separate metadata device
dm integrity: add ic->start in get_data_sector()
dm integrity: report provided data sectors in the status
dm integrity: implement fair range locks
...
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wc->dirty_bitmap_size is in bytes so must multiply it by 8, not by
BITS_PER_LONG, to get number of bitmap_bits.
Fixes crash in find_next_bit() that was reported:
https://bugzilla.kernel.org/show_bug.cgi?id=200819
Reported-by: edo.rus@gmail.com
Fixes: 48debafe4f2f ("dm: add writecache target")
Cc: stable@vger.kernel.org # 4.18
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Pull MD updates from Shaohua Li:
"A few MD fixes for 4.19-rc1:
- several md-cluster fixes from Guoqing
- a data corruption fix from BingJing
- other cleanups"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md/raid5: fix data corruption of replacements after originals dropped
drivers/md/raid5: Do not disable irq on release_inactive_stripe_list() call
drivers/md/raid5: Use irqsave variant of atomic_dec_and_lock()
md/r5cache: remove redundant pointer bio
md-cluster: don't send msg if array is closing
md-cluster: show array's status more accurate
md-cluster: clear another node's suspend_area after the copy is finished
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dm-crypt should only increase device limits, it should not decrease them.
This fixes a bug where the user could creates a crypt device with 1024
sector size on the top of scsi device that had 4096 logical block size.
The limit 4096 would be lost and the user could incorrectly send
1024-I/Os to the crypt device.
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Checkpatch.pl warns there are 2 locations of smp_mb() and smp_wmb()
without code comment. This patch adds the missing code comments for
these memory barrier calls.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This is warned by checkpatch.pl, this patch removes the extra space.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The SPDX header is missing fro closure.c, super.c and util.c, this
patch adds SPDX header for GPL-2.0 into these files.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This is not a preferred style to place open brace '{' at the end of
function definition, checkpatch.pl reports error for such coding
style. This patch moves them into the start of the next new line.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This patch declares char * array with const prefix in sysfs.c,
which is suggested by checkpatch.pl.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This patch fixes 3 style issues warned by checkpatch.pl,
- Comment lines are not aligned
- Comments use "/*" on subsequent lines
- Comment lines use a trailing "*/"
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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kmem_cache_destroy() is safe for NULL pointer as input, the NULL pointer
checking is unncessary. This patch just removes the NULL pointer checking
to make code simpler.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Current bcache Kconfig uses '---help---' as header of help information,
for now 'help' is prefered. This patch fixes this style by replacing
'---help---' by 'help' in bcache Kconfig file.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This patch fixes typo 'succesfully' to correct 'successfully', which is
suggested by checkpatch.pl.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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'%pF' and '%pf' are deprecated vsprintf pointer extensions, this patch
replace them by '%pS', which is suggested by checkpatch.pl.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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bch_btree_insert_check_key() has unaligned indent, or indent by blank
characters. This patch makes the indent aligned and replace blank by
tabs.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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There are still many places in bcache use printk to display kernel
message, which are suggested to be preplaced by pr_*() routines like
pr_err(), pr_info(), or pr_notice().
This patch replaces all printk() with a proper pr_*() routine for
bcache code.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Symbolic permission names are used in bcache, for now octal permission
numbers are encouraged to use for readability. This patch replaces
all symbolic permissions by octal permission numbers.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This patch fixes the lines over 80 characters into more lines, to minimize
warnings by checkpatch.pl. There are still some lines exceed 80 characters,
but it is better to be a single line and I don't change them.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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There are many function definitions do not have identifier argument names,
scripts/checkpatch.pl complains warnings like this,
WARNING: function definition argument 'struct bcache_device *' should
also have an identifier name
#16735: FILE: writeback.h:120:
+void bch_sectors_dirty_init(struct bcache_device *);
This patch adds identifier argument names to all bcache function
definitions to fix such warnings.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This patch fixes warning reported by checkpatch.pl by replacing 'unsigned'
with 'unsigned int'.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Commit ea8c5356d390 ("bcache: set max writeback rate when I/O request
is idle") changes struct bch_ratelimit member rate from uint32_t to
atomic_long_t and uses atomic_long_set() in drivers/md/bcache/sysfs.c
to set new writeback rate, after the input is converted from memory
buf to long int by sysfs_strtoul_clamp().
The above change has a problem because there is an implicit return
inside sysfs_strtoul_clamp() so the following atomic_long_set()
won't be called. This error is detected by 0day system with following
snipped smatch warnings:
drivers/md/bcache/sysfs.c:271 __cached_dev_store() error: uninitialized
symbol 'v'.
270 sysfs_strtoul_clamp(writeback_rate, v, 1, INT_MAX);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@271 atomic_long_set(&dc->writeback_rate.rate, v);
This patch fixes the above error by using strtoul_safe_clamp() to
convert the input buffer into a long int type result.
Fixes: ea8c5356d390 ("bcache: set max writeback rate when I/O request is idle")
Cc: Kai Krakow <kai@kaishome.de>
Cc: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Quoting Documentation/device-mapper/cache.txt:
The 'dirty' state for a cache block changes far too frequently for us
to keep updating it on the fly. So we treat it as a hint. In normal
operation it will be written when the dm device is suspended. If the
system crashes all cache blocks will be assumed dirty when restarted.
This got broken in commit f177940a8091 ("dm cache metadata: switch to
using the new cursor api for loading metadata") in 4.9, which removed
the code that consulted cmd->clean_when_opened (CLEAN_SHUTDOWN on-disk
flag) when loading cache blocks. This results in data corruption on an
unclean shutdown with dirty cache blocks on the fast device. After the
crash those blocks are considered clean and may get evicted from the
cache at any time. This can be demonstrated by doing a lot of reads
to trigger individual evictions, but uncache is more predictable:
### Disable auto-activation in lvm.conf to be able to do uncache in
### time (i.e. see uncache doing flushing) when the fix is applied.
# xfs_io -d -c 'pwrite -b 4M -S 0xaa 0 1G' /dev/vdb
# vgcreate vg_cache /dev/vdb /dev/vdc
# lvcreate -L 1G -n lv_slowdev vg_cache /dev/vdb
# lvcreate -L 512M -n lv_cachedev vg_cache /dev/vdc
# lvcreate -L 256M -n lv_metadev vg_cache /dev/vdc
# lvconvert --type cache-pool --cachemode writeback vg_cache/lv_cachedev --poolmetadata vg_cache/lv_metadev
# lvconvert --type cache vg_cache/lv_slowdev --cachepool vg_cache/lv_cachedev
# xfs_io -d -c 'pwrite -b 4M -S 0xbb 0 512M' /dev/mapper/vg_cache-lv_slowdev
# xfs_io -d -c 'pread -v 254M 512' /dev/mapper/vg_cache-lv_slowdev | head -n 2
0fe00000: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
0fe00010: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
# dmsetup status vg_cache-lv_slowdev
0 2097152 cache 8 27/65536 128 8192/8192 1 100 0 0 0 8192 7065 2 metadata2 writeback 2 migration_threshold 2048 smq 0 rw -
^^^^
7065 * 64k = 441M yet to be written to the slow device
# echo b >/proc/sysrq-trigger
# vgchange -ay vg_cache
# xfs_io -d -c 'pread -v 254M 512' /dev/mapper/vg_cache-lv_slowdev | head -n 2
0fe00000: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
0fe00010: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
# lvconvert --uncache vg_cache/lv_slowdev
Flushing 0 blocks for cache vg_cache/lv_slowdev.
Logical volume "lv_cachedev" successfully removed
Logical volume vg_cache/lv_slowdev is not cached.
# xfs_io -d -c 'pread -v 254M 512' /dev/mapper/vg_cache-lv_slowdev | head -n 2
0fe00000: aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa ................
0fe00010: aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa ................
This is the case with both v1 and v2 cache pool metatata formats.
After applying this patch:
# vgchange -ay vg_cache
# xfs_io -d -c 'pread -v 254M 512' /dev/mapper/vg_cache-lv_slowdev | head -n 2
0fe00000: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
0fe00010: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
# lvconvert --uncache vg_cache/lv_slowdev
Flushing 3724 blocks for cache vg_cache/lv_slowdev.
...
Flushing 71 blocks for cache vg_cache/lv_slowdev.
Logical volume "lv_cachedev" successfully removed
Logical volume vg_cache/lv_slowdev is not cached.
# xfs_io -d -c 'pread -v 254M 512' /dev/mapper/vg_cache-lv_slowdev | head -n 2
0fe00000: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
0fe00010: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
Cc: stable@vger.kernel.org
Fixes: f177940a8091 ("dm cache metadata: switch to using the new cursor api for loading metadata")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Remove the tailing backslash in macro BTREE_FLAG in btree.h
Signed-off-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The pr_err statement in the code for sysfs_attatch section would run
for various error codes, which maybe confusing.
E.g,
Run the command twice:
echo 796b5c05-b03c-4bc7-9cbd-a8df5e8be891 > \
/sys/block/bcache0/bcache/attach
[the backing dev got attached on the first run]
echo 796b5c05-b03c-4bc7-9cbd-a8df5e8be891 > \
/sys/block/bcache0/bcache/attach
In dmesg, after the command run twice, we can get:
bcache: bch_cached_dev_attach() Can't attach sda6: already attached
bcache: __cached_dev_store() Can't attach 796b5c05-b03c-4bc7-9cbd-\
a8df5e8be891
: cache set not found
The first statement in the message was right, but the second was
confusing.
bch_cached_dev_attach has various pr_ statements for various error
codes, except ENOENT.
After the change, rerun above command twice:
echo 796b5c05-b03c-4bc7-9cbd-a8df5e8be891 > \
/sys/block/bcache0/bcache/attach
echo 796b5c05-b03c-4bc7-9cbd-a8df5e8be891 > \
/sys/block/bcache0/bcache/attach
In dmesg we only got:
bcache: bch_cached_dev_attach() Can't attach sda6: already attached
No confusing "cache set not found" message anymore.
And for some not exist SET-UUID:
echo 796b5c05-b03c-4bc7-9cbd-a8df5e8be898 > \
/sys/block/bcache0/bcache/attach
In dmesg we can get:
bcache: __cached_dev_store() Can't attach 796b5c05-b03c-4bc7-9cbd-\
a8df5e8be898
: cache set not found
Signed-off-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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