Merge tag 'led-fixes-for-5.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux.git] / mm / util.c

diff --git a/mm/util.c b/mm/util.c
index 91682a2090eeddb046761726eec1e81817c34d15..9834c4ab7d8e86e1ddb5024b28cf1ab2ff2e55a6 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -718,12 +718,12 @@ int get_cmdline(struct task_struct *task, char *buffer, int buflen)
        if (!mm->arg_end)
                goto out_mm;    /* Shh! No looking before we're done */
 
-       down_read(&mm->mmap_sem);
+       spin_lock(&mm->arg_lock);
        arg_start = mm->arg_start;
        arg_end = mm->arg_end;
        env_start = mm->env_start;
        env_end = mm->env_end;
-       up_read(&mm->mmap_sem);
+       spin_unlock(&mm->arg_lock);
 
        len = arg_end - arg_start;