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authorLinus Torvalds <torvalds@linux-foundation.org>2013-03-26 17:42:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-26 17:42:55 -0700
commitde55eb1d60d2ed0f1ba5e13226d91b3bfbe1c108 (patch)
tree8f2a62f811562b4008dd1cd50a0ebf5603b13a76 /drivers/tty
parentb175293ccc98ab84e93d25472d7422b4a897614b (diff)
parente8cd81693bbbb15db57d3c9aa7dd90eda4842874 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro: "stable fodder; assorted deadlock fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: vt: synchronize_rcu() under spinlock is not nice... Nest rename_lock inside vfsmount_lock Don't bother with redoing rw_verify_area() from default_file_splice_from()
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/vt/vc_screen.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/tty/vt/vc_screen.c b/drivers/tty/vt/vc_screen.c
index e4ca345873c..d7799deacb2 100644
--- a/drivers/tty/vt/vc_screen.c
+++ b/drivers/tty/vt/vc_screen.c
@@ -93,7 +93,7 @@ vcs_poll_data_free(struct vcs_poll_data *poll)
static struct vcs_poll_data *
vcs_poll_data_get(struct file *file)
{
- struct vcs_poll_data *poll = file->private_data;
+ struct vcs_poll_data *poll = file->private_data, *kill = NULL;
if (poll)
return poll;
@@ -122,10 +122,12 @@ vcs_poll_data_get(struct file *file)
file->private_data = poll;
} else {
/* someone else raced ahead of us */
- vcs_poll_data_free(poll);
+ kill = poll;
poll = file->private_data;
}
spin_unlock(&file->f_lock);
+ if (kill)
+ vcs_poll_data_free(kill);
return poll;
}