diff options
| author | Matias Bjørling <m@bjorling.me> | 2016-01-12 09:49:21 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-01-12 18:21:16 +0300 |
| commit | 91276162de9476b8ff32d9452e849210e5dd09e9 (patch) | |
| tree | 53337c60f7d863b1ab733f9bcd4964da818f9057 /drivers/lightnvm/core.c | |
| parent | abd805ec9f51f37db9da63dda44c3f4b4ae8ad57 (diff) | |
| download | linux-91276162de9476b8ff32d9452e849210e5dd09e9.tar.xz | |
lightnvm: refactor end_io functions for sync
To implement sync I/O support within the LightNVM core, the end_io
functions are refactored to take an end_io function pointer instead of
testing for initialized media manager, followed by calling its end_io
function.
Sync I/O can then be implemented using a callback that signal I/O
completion. This is similar to the logic found in blk_to_execute_io().
By implementing it this way, the underlying device I/Os submission logic
is abstracted away from core, targets, and media managers.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm/core.c')
| -rw-r--r-- | drivers/lightnvm/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index 081b0f59b773..fa1a052c4737 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -27,6 +27,7 @@ #include <linux/module.h> #include <linux/miscdevice.h> #include <linux/lightnvm.h> +#include <linux/sched/sysctl.h> #include <uapi/linux/lightnvm.h> static LIST_HEAD(nvm_targets); @@ -288,6 +289,21 @@ int nvm_erase_ppa(struct nvm_dev *dev, struct ppa_addr ppa) } EXPORT_SYMBOL(nvm_erase_ppa); +void nvm_end_io(struct nvm_rq *rqd, int error) +{ + rqd->end_io(rqd, error); +} +EXPORT_SYMBOL(nvm_end_io); + +static void nvm_end_io_sync(struct nvm_rq *rqd, int errors) +{ + struct completion *waiting = rqd->wait; + + rqd->wait = NULL; + + complete(waiting); +} + static int nvm_core_init(struct nvm_dev *dev) { struct nvm_id *id = &dev->identity; |