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| author |   Javier González <javier@cnexlabs.com> | 2017-10-13 14:46:25 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2017-10-13 08:34:57 -0600 |
| commit | 1e82123da6a4c6019ef03bcd47e4b3dc18dd136e (patch) | |
| tree | cb631249f72b69c72d2abba3cd1a69c005c8da86 /drivers/lightnvm/pblk-map.c | |
| parent | lightnvm: pblk: remove redundant check on read path (diff) | |
| download | wireguard-linux-1e82123da6a4c6019ef03bcd47e4b3dc18dd136e.tar.xz wireguard-linux-1e82123da6a4c6019ef03bcd47e4b3dc18dd136e.zip | |
lightnvm: pblk: remove I/O dependency on write path
pblk schedules user I/O, metadata I/O and erases on the write path in
order to minimize collisions at the media level. Until now, there has
been a dependency between user and metadata I/Os that could lead to a
deadlock as both take the per-LUN semaphore to schedule submission.
This path removes this dependency and guarantees forward progress at a
per I/O granurality.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk-map.c')
0 files changed, 0 insertions, 0 deletions