lightnvm: pblk: allocate line map bitmaps using a mempool
authorHans Holmberg <hans.holmberg@cnexlabs.com>
Tue, 9 Oct 2018 11:11:47 +0000 (13:11 +0200)
committerJens Axboe <axboe@kernel.dk>
Tue, 9 Oct 2018 14:25:07 +0000 (08:25 -0600)
commit53d82db693fe1fd1926066583fd24285fb5aae16
treebd4d71e87e1168ceeb11d922617119382f534350
parentd68a9344041b6dd304ff382d0c7805869f09944f
lightnvm: pblk: allocate line map bitmaps using a mempool

Line map bitmap allocations are fairly large and can fail. Allocation
failures are fatal to pblk, stopping the write pipeline. To avoid this,
allocate the bitmaps using a mempool instead.

Mempool allocations never fail if called from a process context,
and pblk *should* only allocate map bitmaps in process context,
but keep the failure handling for robustness sake.

Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/lightnvm/pblk-core.c
drivers/lightnvm/pblk-init.c
drivers/lightnvm/pblk-recovery.c
drivers/lightnvm/pblk.h