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author | David S. Miller <davem@davemloft.net> | 2012-02-27 06:55:51 +0400 |
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committer | David S. Miller <davem@davemloft.net> | 2012-02-27 06:55:51 +0400 |
commit | ff4783ce78c08d2990126ce1874250ae8e72bbd2 (patch) | |
tree | 5c95885a4ab768101dd72942b57c238d452a7565 /fs/signalfd.c | |
parent | 622121719934f60378279eb440d3cec2fc3176d2 (diff) | |
parent | 203738e548cefc3fc3c2f73a9063176c9f3583d5 (diff) | |
download | linux-ff4783ce78c08d2990126ce1874250ae8e72bbd2.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/ethernet/sfc/rx.c
Overlapping changes in drivers/net/ethernet/sfc/rx.c, one to change
the rx_buf->is_page boolean into a set of u16 flags, and another to
adjust how ->ip_summed is initialized.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/signalfd.c')
-rw-r--r-- | fs/signalfd.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/signalfd.c b/fs/signalfd.c index 492465b451dd..7ae2a574cb25 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -30,6 +30,21 @@ #include <linux/signalfd.h> #include <linux/syscalls.h> +void signalfd_cleanup(struct sighand_struct *sighand) +{ + wait_queue_head_t *wqh = &sighand->signalfd_wqh; + /* + * The lockless check can race with remove_wait_queue() in progress, + * but in this case its caller should run under rcu_read_lock() and + * sighand_cachep is SLAB_DESTROY_BY_RCU, we can safely return. + */ + if (likely(!waitqueue_active(wqh))) + return; + + /* wait_queue_t->func(POLLFREE) should do remove_wait_queue() */ + wake_up_poll(wqh, POLLHUP | POLLFREE); +} + struct signalfd_ctx { sigset_t sigmask; }; |