linux.git/drivers/lightnvm/core.c, branch v4.16 Linux kernel source tree lightnvm: set target over-provision on create ioctl 2018-01-05T15:50:12+00:00 Javier González javier@cnexlabs.com 2018-01-05T13:16:14+00:00 e53927393b9987b7c986b6364c27111077f0ea3e 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> 
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>
lightnvm: guarantee target unique name across devs. 2018-01-05T15:50:12+00:00 Javier González javier@cnexlabs.com 2018-01-05T13:16:05+00:00 bd77b23b40370f0f37b6457a8d2a4ed2f2ba22c1 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> 
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>
lightnvm: refactor target type lookup 2018-01-05T15:50:12+00:00 Javier González javier@cnexlabs.com 2018-01-05T13:16:04+00:00 e29c80e6dd70d60de5db305eecf1aecf707b02e8 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> 
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>
lightnvm: make geometry structures 2.0 ready 2018-01-05T15:50:12+00:00 Matias Bjørling matias@cnexlabs.com 2018-01-05T13:16:03+00:00 fae7fae4077c24dc2be720b9f21f53adea98d7dd 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> 
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>
lightnvm: remove lower page tables 2018-01-05T15:50:12+00:00 Matias Bjørling m@bjorling.me 2018-01-05T13:16:02+00:00 bb27aa9ecd1f72e68b0fa2dffeb45bee3b1cb5ca 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> 
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>
lightnvm: remove hybrid ocssd 1.2 support 2018-01-05T15:50:12+00:00 Matias Bjørling m@bjorling.me 2018-01-05T13:16:00+00:00 e3e13bcc14717800e3e3239ca3faac24f2f04575 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> 
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>
Revert "lightnvm: prevent bd removal if busy" 2017-10-13T15:36:06+00:00 Jens Axboe axboe@kernel.dk 2017-10-13T15:36:06+00:00 cdd094fd0ad750c94ccaa5b2ee84fd8264f6f433 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> 
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>
lightnvm: implement generic path for sync I/O 2017-10-13T14:34:57+00:00 Javier González javier@cnexlabs.com 2017-10-13T12:46:47+00:00 1a94b2d484677dc559c96251dd0e7c7b8811c378 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> 
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>
lightnvm: remove stale extern and unused exported symbols 2017-10-13T14:34:57+00:00 Rakesh Pandit rakesh@tuxera.com 2017-10-13T12:46:31+00:00 eb6f168f97438bf1cac8b9b1301c662eace9e39f 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> 
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>
lightnvm: remove unused argument from nvm_set_tgt_bb_tbl 2017-10-13T14:34:57+00:00 Rakesh Pandit rakesh@tuxera.com 2017-10-13T12:46:30+00:00 ef56b9ce562753cacf518f081a4ff3227efdab25 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> 
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>