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2018-01-05lightnvm: set target over-provision on create ioctlJavier González1-23/+83
Allow to set the over-provision percentage on target creation. In case that the value is not provided, fall back to the default value set by the target. In pblk, set the default OP to 11% of the total size of the device Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05lightnvm: guarantee target unique name across devs.Javier González1-6/+27
Until now, target unique naming is only guaranteed per device. This is ok from a lightnvm perspective, but not from a sysfs one, since groups will collide regardless of the underlying device. Check that names are unique across all lightnvm-capable devices. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05lightnvm: refactor target type lookupJavier González1-13/+17
Refactor target type lookup to use/not use locks explicitly instead of using a hidden parameter to make the function locking. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05lightnvm: make geometry structures 2.0 readyMatias Bjørling1-47/+44
Prepare for the 2.0 revision by adapting the geometry structures to coexist with the 1.2 revision. Signed-off-by: Matias Bjørling <m@bjorling.me> Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05lightnvm: remove lower page tablesMatias Bjørling1-67/+0
The lower page table is unused. All page tables reported by 1.2 devices are all reporting a sequential 1:1 page mapping. This is also not used going forward with the 2.0 revision. Signed-off-by: Matias Bjørling <m@bjorling.me> Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-05lightnvm: remove hybrid ocssd 1.2 supportMatias Bjørling1-141/+0
Now that rrpc have been removed. Also remove the hybrid 1.2 support from the core. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13Revert "lightnvm: prevent bd removal if busy"Jens Axboe1-14/+0
Christoph correctly points out that this issue is no different for other block devices, and poking at cross layer internals is not the right way to solve it. This reverts commit bb6aa6f08268bbce4e0185b18cab9e04505d6695. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: implement generic path for sync I/OJavier González1-8/+17
Implement a generic path for sending sync I/O on LightNVM. This allows to reuse the standard synchronous path trough blk_execute_rq(), instead of implementing a wait_for_completion on the target side (e.g., pblk). Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: remove stale extern and unused exported symbolsRakesh Pandit1-65/+64
Not all exported symbols are being used outside core and there were some stale entries in lightnvm.h Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: remove unused argument from nvm_set_tgt_bb_tblRakesh Pandit1-17/+12
vblk isn't being used anyway and if we ever have a usecase we can introduce this again. This makes the logic easier and removes unnecessary checks. Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: remove already calculated nr_chnlsRakesh Pandit1-1/+0
Remove repeated calculation for number of channels while creating a target device. Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: protect target type list with correct locksRakesh Pandit1-4/+4
nvm_tgt_types list was protected by wrong lock for NVM_INFO ioctl call and can race with addition or removal of target types. Also unregistering target type was not protected correctly. Fixes: 5cd907853 ("lightnvm: remove nested lock conflict with mm") Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: prevent bd removal if busyRakesh Pandit1-0/+14
When a virtual block device is formatted and mounted after creating with "nvme lnvm create... -t pblk", a removal from "nvm lnvm remove" would result in this: 446416.309757] bdi-block not registered [446416.309773] ------------[ cut here ]------------ [446416.309780] WARNING: CPU: 3 PID: 4319 at fs/fs-writeback.c:2159 __mark_inode_dirty+0x268/0x340 Ideally removal should return -EBUSY as block device is mounted after formatting. This patch tries to address this checking if whole device or any partition of it already mounted or not before removal. Whole device is checked using "bd_super" member of block device. This member is always set once block device has been mounted using a filesystem. Another member "bd_part_count" takes care of checking any if any partitions are under use. "bd_part_count" is only updated under locks when partitions are opened or closed (first open and last release). This at least does take care sending -EBUSY if removal is being attempted while whole block device or any partition is mounted. Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13lightnvm: prevent target type module removal when in useRakesh Pandit1-0/+4
If target type module e.g. pblk here is unloaded (rmmod) while module is in use (after creating target) system crashes. We fix this by using module API refcnt. Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27lightnvm: if LUNs are already allocated fix returnRakesh Pandit1-2/+3
While creating new device with NVM_DEV_CREATE if LUNs are already allocated ioctl would return -ENOMEM which is wrong. This patch propagates -EBUSY from nvm_reserve_luns which is correct response. Fixes: ade69e243 ("lightnvm: merge gennvm with core") Reviewed-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-26lightnvm: re-convert ppa format on I/O failureJavier González1-1/+7
In case of a failure when submitting a request, convert the ppa_list addresses to the target format so that it can interpret ppas for recovery Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-05-04lightnvm: fix bad back free on error pathJavier González1-2/+2
Free memory correctly when an allocation fails on a loop and we free backwards previously successful allocations. Signed-off-by: Javier González <javier@cnexlabs.com> Reviewed-by: Matias Bjørling <matias@cnexlabs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-21lightnvm: propagate pblk_init return to userspaceRakesh Pandit1-6/+18
From userspace calling ioctl(NVM_DEV_CREATE) was returning ENOMEM for invalid arguments even though pblk (pblk_init) was returning correctly -EINVAL to nvm_create_tgt inside core. This patch propagates the correct return value to userspace. Because pblk was introduced recently this only needs to go in 4.12. Fixes: a4bd217b4326 ("lightnvm: physical block device (pblk) target") Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-20ligtnvm: fix double blk_put_queue on same queueRakesh Pandit1-0/+1
On an error path in NVM_DEV_CREATE ioctl blk_put_queue is being called twice: one via blk_cleanup_queue and another via put_disk. Straight fix seems to remove queue pointer so that disk_release never ends up caling blk_put_queue again. [ 391.808827] WARNING: CPU: 1 PID: 1250 at lib/refcount.c:128 refcount_sub_and_test+0x70/0x80 [ 391.808830] refcount_t: underflow; use-after-free. [ 391.808832] Modules linked in: nf_conntrack_netbios_ns............ [ 391.809052] CPU: 1 PID: 1250 Comm: nvme Not tainted......... [ 391.809057] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 [ 391.809060] Call Trace: [ 391.809079] dump_stack+0x63/0x86 [ 391.809094] __warn+0xcb/0xf0 [ 391.809103] warn_slowpath_fmt+0x5f/0x80 [ 391.809118] refcount_sub_and_test+0x70/0x80 [ 391.809125] refcount_dec_and_test+0x11/0x20 [ 391.809136] kobject_put+0x1f/0x60 [ 391.809149] blk_put_queue+0x15/0x20 [ 391.809159] disk_release+0xae/0xf0 [ 391.809172] device_release+0x32/0x90 [ 391.809184] kobject_release+0x6a/0x170 [ 391.809196] kobject_put+0x2f/0x60 [ 391.809206] put_disk+0x17/0x20 [ 391.809219] nvm_ioctl_dev_create.isra.16+0x897/0xa30 [ 391.809236] nvm_ctl_ioctl+0x23c/0x4c0 [ 391.809248] do_vfs_ioctl+0xa3/0x5f0 [ 391.809258] SyS_ioctl+0x79/0x90 [ 391.809271] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 391.809280] RIP: 0033:0x7f5d3ef363c7 [ 391.809286] RSP: 002b:00007ffc72ed8d78 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 391.809296] RAX: ffffffffffffffda RBX: 00007ffc72edb552 RCX: 00007f5d3ef363c7 [ 391.809301] RDX: 00007ffc72ed8d90 RSI: 0000000040804c22 RDI: 0000000000000003 [ 391.809306] RBP: 0000000000000001 R08: 0000000000000020 R09: 0000000000000001 [ 391.809311] R10: 000000000000053f R11: 0000000000000206 R12: 0000000000000000 [ 391.809316] R13: 0000000000000000 R14: 00007ffc72edb58d R15: 00007ffc72edb581 Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Reviewed-by: Matias Bjørling <matias@cnexlabs.com> Fixes: 7d1ef2f408ab "lightnvm: fix cleanup order of disk on init error" Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: convert sprintf into strlcpyJavier González1-3/+3
Convert sprintf calls to strlcpy in order to make possible buffer overflow more obvious. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: clean unused variableJavier González1-3/+0
Clean unused variable on lightnvm core. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: make nvm_free staticJavier González1-1/+1
Prefix the nvm_free static function with a missing static keyword. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: allow to init targets on factory modeJavier González1-3/+11
Target initialization has two responsibilities: creating the target partition and instantiating the target. This patch enables to create a factory partition (e.g., do not trigger recovery on the given target). This is useful for target development and for being able to restore the device state at any moment in time without requiring a full-device erase. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: fix cleanup order of disk on init errorJavier González1-7/+7
Reorder disk allocation such that the disk structure can be put safely. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: double-clear of dev->lun_map on target init errorJavier González1-7/+10
The dev->lun_map bits are cleared twice if an target init error occurs. First in the target clean routine, and then next in the nvm_tgt_create error function. Make sure that it is only cleared once by extending nvm_remove_tgt_devi() with a clear bit, such that clearing of bits can ignored when cleaning up a successful initialized target. Signed-off-by: Javier González <javier@cnexlabs.com> Fix style. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: free reverse device mapJavier González1-1/+13
Free the reverse mapping table correctly on target tear down Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-16lightnvm: submit erases using the I/O pathJavier González1-21/+33
Until now erases have been submitted as synchronous commands through a dedicated erase function. In order to enable targets implementing asynchronous erases, refactor the erase path so that it uses the normal async I/O submission functions. If a target requires sync I/O, it can implement it internally. Also, adapt rrpc to use the new erase path. Signed-off-by: Javier González <javier@cnexlabs.com> Fixed spelling error. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-15lightnvm: set default lun range when no luns are specifiedMatias Bjørling1-0/+5
The create target ioctl takes a lun begin and lun end parameter, which defines the range of luns to initialize a target with. If the user does not set the parameters, it default to only using lun 0. Instead, defaults to use all luns in the OCSSD, as it is the usual behaviour users want. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-15lightnvm: fix off-by-one error on target initializationMatias Bjørling1-2/+2
If one specifies the end lun id to be the absolute number of luns, without taking zero indexing into account, the lightnvm core will pass the off-by-one end lun id to target creation, which then panics during nvm_ioctl_dev_create. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: allow targets to use sysfsJavier González1-0/+9
In order to register through the sysfs interface, a driver needs to know its kobject. On a disk structure, this happens when the partition information is added (device_add_disk), which for lightnvm takes place after the target has been initialized. This means that on target initialization, the kboject has not been created yet. This patch adds a target function to let targets initialize their own kboject as a child of the disk kobject. Signed-off-by: Javier González <javier@cnexlabs.com> Added exit typedef and passed gendisk instead of void pointer for exit. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: free properly on target creation errorJavier González1-1/+1
Fix a memory leak when target creation fails. More specifically, free the entire device structure given to the target (tgt_dev). Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: use end_io callback instead of instanceMatias Bjørling1-4/+3
When the lightnvm core had the "gennvm" layer between the device and the target, there was a need for the core to be able to figure out which target it should send an end_io callback to. Leading to a "double" end_io, first for the media manager instance, and then for the target instance. Now that core and gennvm is merged, there is no longer a need for this, and a single end_io callback will do. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: reduce number of nvm_id groups to oneMatias Bjørling1-9/+3
The number of configuration groups has been limited to one in current code, even if there is support for up to four. With the introduction of the open-channel SSD 1.3 specification, only a single group is exposed onwards. Reflect this in the nvm_id structure. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: cleanup nvm transformation functionsMatias Bjørling1-81/+34
Going from target specific ppa addresses to device was accomplished by first converting target to generic ppa addresses and generic to device addresses. The conversion was either open-coded or used the built-in nvm_trans_* and nvm_map_* functions for conversion. Simplify the interface and cleanup the calls to provide clean functions that now either take a list of ppas or a nvm_rq, and is exposed through: void nvm_ppa_* - target to/from device with a list of PPAs, void nvm_rq_* - target to/from device with a nvm_rq. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: make nvm_map_* return voidMatias Bjørling1-32/+9
The only check there was done was a debugging check. Remove it and replace the return value with void to reduce error checking. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: remove nvm_get_bb_tbl and nvm_set_bb_tblMatias Bjørling1-36/+4
Since the merge of gennvm and core, there is no longer a need for the device specific bad block functions. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: remove nvm_submit_ppa* functionsMatias Bjørling1-109/+0
The nvm_submit_ppa* functions are no longer needed after gennvm and core have been merged. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: collapse nvm_erase_ppa and nvm_erase_blkMatias Bjørling1-31/+26
After gennvm and core have been merged, there are no more callers to nvm_erase_ppa. Therefore collapse the device specific and target specific erase functions. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: merge gennvm with coreMatias Bjørling1-191/+595
For the first iteration of Open-Channel SSDs, it was anticipated that there could be various media managers on top of an open-channel SSD, such to allow vendors to plug in their own host-side FTLs, without the media manager in between. Now that an Open-Channel SSD is exposed as a traditional block device, there is no longer a need for this. Therefore lets merge the gennvm code with core and simplify the stack. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-13Merge tag 'char-misc-4.10-rc1' of ↵Linus Torvalds1-8/+2
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver patches for 4.10-rc1. Lots of tiny changes over lots of "minor" driver subsystems, the largest being some new FPGA drivers. Other than that, a few other new drivers, but no new driver subsystems added for this kernel cycle, a nice change. All of these have been in linux-next with no reported issues" * tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (107 commits) uio-hv-generic: store physical addresses instead of virtual Tools: hv: kvp: configurable external scripts path uio-hv-generic: new userspace i/o driver for VMBus vmbus: add support for dynamic device id's hv: change clockevents unbind tactics hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels() hyperv: Fix spelling of HV_UNKOWN mei: bus: enable non-blocking RX mei: fix the back to back interrupt handling mei: synchronize irq before initiating a reset. VME: Remove shutdown entry from vme_driver auxdisplay: ht16k33: select framebuffer helper modules MAINTAINERS: add git url for fpga fpga: Clarify how write_init works streaming modes fpga zynq: Fix incorrect ISR state on bootup fpga zynq: Remove priv->dev fpga zynq: Add missing \n to messages fpga: Add COMPILE_TEST to all drivers uio: pruss: add clk_disable() char/pcmcia: add some error checking in scr24x_read() ...
2016-11-29lightnvm: transform target get/set bad blockJavier González1-0/+58
Since targets are given a virtual target device, it is necessary to translate all communication between targets and the backend device. Implement the translation layer for get/set bad block table. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: use target nvm on target-specific ops.Javier González1-5/+10
On target-specific operations pass on nvm_tgt_dev instead of the generic nvm device. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: introduce max_phys_sects helper functionJavier González1-0/+8
Target devices do not have access to the device driver operations. Introduce a helper function that exposes the max. number of physical sectors supported by the underlying device. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: introduce helpers for generic ops in rrpcJavier González1-0/+22
Avoid calling media manager and device-specific operations directly from rrpc. Create helper functions on lightnvm's core instead. Signed-off-by: Javier González <javier@cnexlabs.com> Made it work with null_blk as well. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: eliminate nvm_lun abstraction in mmJavier González1-5/+9
In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. Since targets own the LUNs the are instantiated on top of and manage the free block list internally, there is no need for a LUN abstraction in the media manager. LUNs are intrinsically managed as in the physical layout (ch:0,lun:0, ..., ch:0,lun:n, ch:1,lun:0, ch:1,lun:n, ..., ch:m,lun:0, ch:m,lun:n) and given to the targets based on the target creation ioctl. This simplifies LUN management and clears the path for a partition manager to sit directly underneath LightNVM targets. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: eliminate nvm_block abstraction on mmJavier González1-8/+2
In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. A part of this transformation is that targets manage their blocks internally. This patch eliminates the nvm_block abstraction and moves block management to the target logic. The rrpc target is transformed. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: move block provisioning to targetsJavier González1-52/+45
In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. This patch moves the block provisioning inside of the target and removes the get/put block interface from the media manager. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: remove sysfs configuration interfaceJavier González1-134/+0
LightNVM used to be managed and configured through sysfs. Since the introduction of management ioctls this interface is redundant and outdated. Get rid of it. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: export set bad block tableJavier González1-0/+27
Bad blocks should be managed by block owners. This would be either targets for data blocks or sysblk for system blocks. In order to support this, export two functions: One to mark a block as an specific type (e.g., bad block) and another to update the bad block table on the device. Move bad block management to rrpc. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: enable to send hint to erase commandJavier González1-3/+6
Erases might be subject to host hints. An example is multi-plane programming to erase blocks in parallel. Enable targets to specify this hint. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
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