diff options
| author | Javier González <jg@lightnvm.io> | 2017-04-22 01:32:45 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-23 16:57:52 -0600 |
| commit | 3dc001f343659e4732b4ff6da1c28edbd56c6e15 (patch) | |
| tree | 5d541173911c6ab32b812541aff08beeae5853fa /drivers/lightnvm | |
| parent | 2859323e35ab5fc42f351fbda23ab544eaa85945 (diff) | |
| download | linux-3dc001f343659e4732b4ff6da1c28edbd56c6e15.tar.gz | |
lightnvm: pblk: fix race condition on line retry
When a pblk line fails (or is recovered), make sure to take the line
management lock.
Fixes: a4bd217b4326 "lightnvm: physical block device (pblk) target"
Signed-off-by: Javier González <javier@cnexlabs.com>
Reviewed-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm')
| -rw-r--r-- | drivers/lightnvm/pblk-core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index a2bcd098babc..7065658fd7ee 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -1050,13 +1050,14 @@ int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line) spin_lock(&l_mg->free_lock); l_mg->data_line = line; list_del(&line->list); - spin_unlock(&l_mg->free_lock); ret = pblk_line_prepare(pblk, line); if (ret) { list_add(&line->list, &l_mg->free_list); + spin_unlock(&l_mg->free_lock); return ret; } + spin_unlock(&l_mg->free_lock); pblk_rl_free_lines_dec(&pblk->rl, line); @@ -1140,6 +1141,7 @@ static struct pblk_line *pblk_line_retry(struct pblk *pblk, line->invalid_bitmap = NULL; line->smeta = NULL; line->emeta = NULL; + l_mg->data_line = retry_line; spin_unlock(&l_mg->free_lock); if (pblk_line_erase(pblk, retry_line)) @@ -1147,8 +1149,6 @@ static struct pblk_line *pblk_line_retry(struct pblk *pblk, pblk_rl_free_lines_dec(&pblk->rl, retry_line); - l_mg->data_line = retry_line; - return retry_line; } |