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authorLuc Van Oostenryck <luc.vanoostenryck@gmail.com>2019-11-20 01:33:20 +0100
committerChristian Brauner <christian.brauner@ubuntu.com>2019-11-20 11:48:50 +0100
commit9e77716a75bc6cf54965e5ec069ba7c02b32251c (patch)
tree5a84c6ab1aacff9824cae200d073209ae6506a14 /kernel/fork.c
parentaf42d3466bdc8f39806b26f593604fdc54140bcb (diff)
downloadlinux-9e77716a75bc6cf54965e5ec069ba7c02b32251c.tar.bz2
fork: fix pidfd_poll()'s return type
pidfd_poll() is defined as returning 'unsigned int' but the .poll method is declared as returning '__poll_t', a bitwise type. Fix this by using the proper return type and using the EPOLL constants instead of the POLL ones, as required for __poll_t. Fixes: b53b0b9d9a61 ("pidfd: add polling support") Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: stable@vger.kernel.org # 5.3 Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com> Link: https://lore.kernel.org/r/20191120003320.31138-1-luc.vanoostenryck@gmail.com Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 55af6931c6ec..13b38794efb5 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1708,11 +1708,11 @@ static void pidfd_show_fdinfo(struct seq_file *m, struct file *f)
/*
* Poll support for process exit notification.
*/
-static unsigned int pidfd_poll(struct file *file, struct poll_table_struct *pts)
+static __poll_t pidfd_poll(struct file *file, struct poll_table_struct *pts)
{
struct task_struct *task;
struct pid *pid = file->private_data;
- int poll_flags = 0;
+ __poll_t poll_flags = 0;
poll_wait(file, &pid->wait_pidfd, pts);
@@ -1724,7 +1724,7 @@ static unsigned int pidfd_poll(struct file *file, struct poll_table_struct *pts)
* group, then poll(2) should block, similar to the wait(2) family.
*/
if (!task || (task->exit_state && thread_group_empty(task)))
- poll_flags = POLLIN | POLLRDNORM;
+ poll_flags = EPOLLIN | EPOLLRDNORM;
rcu_read_unlock();
return poll_flags;