user/sven/linux.git/drivers/lightnvm, branch v4.4.271

lightnvm: put bio before return

2016-09-24T08:07:35Z

commit 16c6d048d7b74249a4387700887e8adb13028866 upstream. The bio is not returned if the data page cannot be allocated. Signed-off-by: Wenwei Tao Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Cc: Ben Hutchings Signed-off-by: Greg Kroah-Hartman

lightnvm: fix locking and mempool in rrpc_lun_gc

2016-09-15T06:27:40Z

[ Upstream commit b262924be03d5d2ae735bc9a4b37eb2c613f61f8 ] This patch fix two issues in rrpc_lun_gc 1. prio_list is protected by rrpc_lun's lock not nvm_lun's, so acquire rlun's lock instead of lun's before operate on the list. 2. we delete block from prio_list before allocating gcb, but gcb allocation may fail, we end without putting it back to the list, this makes the block won't get reclaimed in the future. To solve this issue, delete block after gcb allocation. Signed-off-by: Wenwei Tao Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: unlock rq and free ppa_list on submission fail

2016-09-15T06:27:40Z

[ Upstream commit c27278bddd75a3ee755c8e83c6bcc3fdd7271ef6 ] When rrpc_write_ppalist_rq and rrpc_read_ppalist_rq succeed, we setup rq correctly, but nvm_submit_io may afterward fail since it cannot allocate request or nvme_nvm_command, we return error but forget to cleanup the previous work. Signed-off-by: Wenwei Tao Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: add check after mempool allocation

2016-09-15T06:27:40Z

[ Upstream commit 3bfbc6adbc5031e8a5907baa5beb27b41637742a ] The mempool allocation might fail. Make sure to return error when it does, instead of causing a kernel panic. Signed-off-by: Javier Gonzalez Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: fix incorrect nr_free_blocks stat

2016-09-15T06:27:40Z

[ Upstream commit bdded1552085b12d23c9be76147d2e96647a098f ] When initing bad block list in gennvm_block_bb, once we move bad block from free_list to bb_list, we should maintain both stat info nr_free_blocks and nr_bad_blocks. So this patch fixes to add missing operation related to nr_free_blocks. Signed-off-by: Chao Yu Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: fix bio submission issue

2016-09-15T06:27:39Z

[ Upstream commit 3cd485b1f8e25a6534eb4c542e7eba1b944fbaaf ] Put bio when submission fails, since we get it before submission. And return error when backend device driver doesn't provide a submit_io method, thus we can end IO properly. Signed-off-by: Wenwei Tao Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: wrong offset in bad blk lun calculation

2015-12-29T15:28:32Z

dev->nr_luns reports the total number of luns available in a device while dev->luns_per_chnl is the number of luns per channel. When multiple channels are available, the offset is calculated from a channel and lun id into a linear array. As it multiplies with the total number of luns, we go out of bound when channel id > 0 and causes the kernel to panic when we read a protected kernel memory area. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: do not compile in debugging by default

2015-12-07T16:14:20Z

The LightNVM module exposes a debug interface when CONFIG_NVM_DEBUG is set. This interfaces takes a string to configure media managers and targets. Make sure this interface is only exposed when chosen deliberately. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: prevent gennvm module unload on use

2015-12-07T16:14:19Z

After the gennvm module has been initialized. It might be attached to one or several devices. In that case, the module is in use. Make sure that it can not be unloaded. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: fix media mgr registration

2015-12-07T16:14:19Z

This patch fixes two issues during media manager registration. 1. The ppa pool can be used at media manager registration. Allocate the ppa pool before that. 2. If a media manager can't be found, this should not lead to the device being unallocated. A media manager can be registered later, that can manage the device. Only warn if a media manager fails initialization. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe