linux/drivers/lightnvm, branch v4.7

lightnvm: reserved space calculation incorrect

2016-05-06T18:51:10Z

The nvm_dev->max_pages_per_blk variable was removed in favor of the new nvm->sec_per_blk variable. The ->max_pages_per_blk variable was still used in rrpc_capacity, reporting the reserved capacity to zero. Replace with ->sec_per_blk to calculate the reserved area again. Signed-off-by: Javier González Updated patch description. Was "lightnvm: eliminate redundant variable" Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: rename nr_pages to nr_ppas on nvm_rq

2016-05-06T18:51:10Z

The number of ppas contained on a request is not necessarily the number of pages that it maps to neither on the target nor on the device side. In order to avoid confusion, rename nr_pages to nr_ppas since it is what the variable actually contains. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: expose gennvm_mark_blk to targets

2016-05-06T18:51:10Z

Targets can update a block state when having a reference to an in-memory virtual block. In the case that a target does not keep the block metadata in memory, it does not have a way to update this structure. Therefore, expose gennvm_mark_blk() through the media managers ->mark_blk() callback and let targets update the state structure through this callback. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: remove mgt targets on mgt removal

2016-05-06T18:51:10Z

Targets associated with a device manager are not freed on device removal. They have to be manually removed before shutdown. Make sure any outstanding targets are freed upon shutdown. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: do not assume sequential lun alloc.

2016-05-06T18:51:10Z

When doing GC, rrpc calculates the physical LUN to which the rrpc block belongs too. This calculation is based on the assumption that LUNs are assigned sequentially to the LUN list. Use the reference to the LUN instead. This saves us the calculation and allows us to align LUNs in a different manner to, for example, take advantage of devide parallelism. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: rename dma helper functions

2016-05-06T18:51:10Z

Until now, the dma pool have been exclusively used to allocate the ppa list being sent to the device. In pblk (upcoming), we use these pools to allocate metadata too. Thus, we generalize the names of some variables on the dma helper functions to make the code more readable. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: do not free unused metadata on rrpc

2016-05-06T18:51:10Z

rrpc does not save any metadata on a given request. Thus, do not attempt to free the metadata dma region. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: fix out of bound ppa lun id on bb tbl

2016-05-06T18:51:10Z

The ppa configured for retrieving the bad block table uses the internal lun id to setup the get bad block ppa. This increases monotonically with the number luns available. When configuring a ppa, the channel and lun must be specified separately, leading to an out of bound memory access in gennvm_block_bb when lun id goes beyond the luns available within a channel. Additional, remove out of bound check in gennvm_block_bb(), as it was a buggy to begin with. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: refactor set_bb_tbl for accepting ppa list

2016-05-06T18:51:10Z

The set_bb_tbl takes struct nvm_rq and only uses its ppa_list and nr_pages internally. Instead, make these two variables explicit. This allows a user to call it without initializing a struct nvm_rq first. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: move responsibility for bad blk mgmt to target

2016-05-06T18:51:10Z

We move the responsibility of managing the persistent bad block table to the target. The target may choose to mark a block bad or retry writing to it. Never the less, it should be the target that makes the decision and not the media manager. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe