kernel/git/stable/linux.git/drivers/lightnvm, branch linux-4.17.y

lightnvm: pblk: warn in case of corrupted write buffer

2018-08-03T05:47:38+00:00

[ Upstream commit e37d07983af9068de0303054542d2652ca917f58 ] When cleaning up buffer entries as we wrap up, their state should be "completed". If any of the entries is in "submitted" state, it means that something bad has happened. Trigger a warning immediately instead of waiting for the state flag to eventually be updated, thus hiding the issue. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: proper error handling for pblk_bio_add_pages

2018-08-03T05:47:38+00:00

[ Upstream commit f142ac0b5d18547a9614a697f86820ee35fd7bf0 ] Currently in case of error caused by bio_pc_add_page in pblk_bio_add_pages two issues occur when calling from pblk_rb_read_to_bio(). First one is in pblk_bio_free_pages, since we are trying to free pages not allocated from our mempool. Second one is the warn from dma_pool_free, that we are trying to free NULL pointer dma. This commit fix both issues. Signed-off-by: Igor Konopko Signed-off-by: Marcin Dziegielewski Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: fix partial read error path

2018-08-03T05:47:38+00:00

[ Upstream commit fbadca7396b97d95e2390c97506358f4f9dce7c7 ] When error occurs during bio_add_page on partial read path, pblk tries to free pages twice. Signed-off-by: Igor Konopko Signed-off-by: Marcin Dziegielewski Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

lightnvm: pblk: remove some unnecessary NULL checks

2018-03-29T23:29:09+00:00

Smatch complains that flush_workqueue() dereferences the work queue pointer but then we check if it's NULL on the next line when it's too late. These NULL checks can be removed because the module won't load if we can't allocate the work queues. Signed-off-by: Dan Carpenter Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: pblk: don't recover unwritten lines

2018-03-29T23:29:09+00:00

If the line has not been written to, we should not try to recover any data from it, so check the state of the chunks in the line before attempting to read smeta. Signed-off-by: Hans Holmberg Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: pblk: implement 2.0 support

2018-03-29T23:29:09+00:00

Implement 2.0 support in pblk. This includes the address formatting and mapping paths, as well as the sysfs entries for them. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: pblk: implement get log report chunk

2018-03-29T23:29:09+00:00

In preparation of pblk supporting 2.0, implement the get log report chunk in pblk. Also, define the chunk states as given in the 2.0 spec. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: pblk: rename ppaf* to addrf*

2018-03-29T23:29:09+00:00

In preparation for 2.0 support in pblk, rename variables referring to the address format to addrf and reserve ppaf for the 1.2 path. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: pblk: check for supported version

2018-03-29T23:29:09+00:00

At this point, only 1.2 spec is supported, thus check for it. Also, since device-side L2P is only supported in the 1.2 spec, make sure to only check its value under 1.2. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: implement get log report chunk helpers

2018-03-29T23:29:09+00:00

The 2.0 spec provides a report chunk log page that can be retrieved using the stangard nvme get log page. This replaces the dedicated get/put bad block table in 1.2. This patch implements the helper functions to allow targets retrieve the chunk metadata using get log page. It makes nvme_get_log_ext available outside of nvme core so that we can use it form lightnvm. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe