diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nbd.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index d18ba557a69d..0bb3c1e2d575 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -411,7 +411,11 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req, if (!mutex_trylock(&cmd->lock)) return BLK_EH_RESET_TIMER; - __clear_bit(NBD_CMD_INFLIGHT, &cmd->flags); + if (!__test_and_clear_bit(NBD_CMD_INFLIGHT, &cmd->flags)) { + mutex_unlock(&cmd->lock); + return BLK_EH_DONE; + } + if (!refcount_inc_not_zero(&nbd->config_refs)) { cmd->status = BLK_STS_TIMEOUT; mutex_unlock(&cmd->lock); @@ -846,7 +850,10 @@ static bool nbd_clear_req(struct request *req, void *data, bool reserved) return true; mutex_lock(&cmd->lock); - __clear_bit(NBD_CMD_INFLIGHT, &cmd->flags); + if (!__test_and_clear_bit(NBD_CMD_INFLIGHT, &cmd->flags)) { + mutex_unlock(&cmd->lock); + return true; + } cmd->status = BLK_STS_IOERR; mutex_unlock(&cmd->lock); |