diff options
| author | Javier González <javier@cnexlabs.com> | 2017-10-13 15:46:05 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-10-13 17:34:57 +0300 |
| commit | da67e68fb9d37fb9072b20cc75d4337a73bc01b4 (patch) | |
| tree | 81f0a1b1872dfaf14959b8f8b730bafcf512c309 /drivers/lightnvm/pblk-rl.c | |
| parent | e0e12a707f02fcde1b77a2417d9fb0ae1ce3b003 (diff) | |
| download | linux-da67e68fb9d37fb9072b20cc75d4337a73bc01b4.tar.xz | |
lightnvm: pblk: avoid deadlock on low LUN config
On low LUN configurations, make sure not to send bios that are bigger
than the buffer size.
Fixes: a4bd217b4326 ("lightnvm: physical block device (pblk) target")
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-rl.c')
| -rw-r--r-- | drivers/lightnvm/pblk-rl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c index 9565c3bc4d0b..0896439a91b0 100644 --- a/drivers/lightnvm/pblk-rl.c +++ b/drivers/lightnvm/pblk-rl.c @@ -163,6 +163,11 @@ int pblk_rl_sysfs_rate_show(struct pblk_rl *rl) return rl->rb_user_max; } +int pblk_rl_max_io(struct pblk_rl *rl) +{ + return rl->rb_max_io; +} + static void pblk_rl_u_timer(unsigned long data) { struct pblk_rl *rl = (struct pblk_rl *)data; @@ -199,6 +204,7 @@ void pblk_rl_init(struct pblk_rl *rl, int budget) /* To start with, all buffer is available to user I/O writers */ rl->rb_budget = budget; rl->rb_user_max = budget; + rl->rb_max_io = budget >> 1; rl->rb_gc_max = 0; rl->rb_state = PBLK_RL_HIGH; |