diff options
| author | Josef Bacik <jbacik@fb.com> | 2016-09-08 22:33:38 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-09-08 23:01:34 +0300 |
| commit | c261189862c6f65117eb3b1748622a08ef49c262 (patch) | |
| tree | 17af2c3ead2f500d34264bf78551b9c520efa472 /drivers/block | |
| parent | fd8383fd88a2fd842a9431df5ed353bd7129eecc (diff) | |
| download | linux-c261189862c6f65117eb3b1748622a08ef49c262.tar.xz | |
nbd: don't shutdown sock with irq's disabled
We hit a warning when shutting down the nbd connection because we have irq's
disabled. We don't really need to do the shutdown under the lock, just clear
the nbd->sock. So do the shutdown outside of the irq. This gets rid of the
warning.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nbd.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 15e7c6740873..4b7d0f3c3521 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -161,6 +161,8 @@ static void nbd_end_request(struct nbd_cmd *cmd) */ static void sock_shutdown(struct nbd_device *nbd) { + struct socket *sock; + spin_lock_irq(&nbd->sock_lock); if (!nbd->sock) { @@ -168,18 +170,21 @@ static void sock_shutdown(struct nbd_device *nbd) return; } + sock = nbd->sock; dev_warn(disk_to_dev(nbd->disk), "shutting down socket\n"); - kernel_sock_shutdown(nbd->sock, SHUT_RDWR); - sockfd_put(nbd->sock); nbd->sock = NULL; spin_unlock_irq(&nbd->sock_lock); + kernel_sock_shutdown(sock, SHUT_RDWR); + sockfd_put(sock); + del_timer(&nbd->timeout_timer); } static void nbd_xmit_timeout(unsigned long arg) { struct nbd_device *nbd = (struct nbd_device *)arg; + struct socket *sock = NULL; unsigned long flags; if (!atomic_read(&nbd->outstanding_cmds)) @@ -189,10 +194,16 @@ static void nbd_xmit_timeout(unsigned long arg) nbd->timedout = true; - if (nbd->sock) - kernel_sock_shutdown(nbd->sock, SHUT_RDWR); + if (nbd->sock) { + sock = nbd->sock; + get_file(sock->file); + } spin_unlock_irqrestore(&nbd->sock_lock, flags); + if (sock) { + kernel_sock_shutdown(sock, SHUT_RDWR); + sockfd_put(sock); + } dev_err(nbd_to_dev(nbd), "Connection timed out, shutting down connection\n"); } |