userns; Correct the comment in map_write

It is important that all maps are less than PAGE_SIZE
or else setting the last byte of the buffer to '0'
could write off the end of the allocated storage.

Correct the misleading comment.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index a2e37c5d2f63..ad419b04c146 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -643,7 +643,7 @@ static ssize_t map_write(struct file *file, const char __user *buf,
         if (!page)
                 goto out;
 
-        /* Only allow <= page size writes at the beginning of the file */
+        /* Only allow < page size writes at the beginning of the file */
         ret = -EINVAL;
         if ((*ppos != 0) || (count >= PAGE_SIZE))
                 goto out;