[PATCH] file: modify struct fown_struct to use a struct pid

File handles can be requested to send sigio and sigurg to processes.  By
tracking the destination processes using struct pid instead of pid_t we make
the interface safe from all potential pid wrap around problems.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/file_table.c b/fs/file_table.c
index bc35a40417d7..24f25a057d9c 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -174,6 +174,7 @@ void fastcall __fput(struct file *file)
         fops_put(file->f_op);
         if (file->f_mode & FMODE_WRITE)
                 put_write_access(inode);
+        put_pid(file->f_owner.pid);
         file_kill(file);
         file->f_dentry = NULL;
         file->f_vfsmnt = NULL;