jbd2: Add commit time into the commit block

[pandora-kernel.git] / fs / pipe.c

diff --git a/fs/pipe.c b/fs/pipe.c
index f73492b..700f4e0 100644 (file)
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -17,6 +17,7 @@
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
 #include <linux/audit.h>
+#include <linux/syscalls.h>
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
@@ -1002,8 +1003,7 @@ struct file *create_write_pipe(void)
 void free_write_pipe(struct file *f)
 {
        free_pipe_info(f->f_dentry->d_inode);
-       dput(f->f_path.dentry);
-       mntput(f->f_path.mnt);
+       path_put(&f->f_path);
        put_filp(f);
 }
 
@@ -1014,8 +1014,8 @@ struct file *create_read_pipe(struct file *wrf)
                return ERR_PTR(-ENFILE);
 
        /* Grab pipe from the writer */
-       f->f_path.mnt = mntget(wrf->f_path.mnt);
-       f->f_path.dentry = dget(wrf->f_path.dentry);
+       f->f_path = wrf->f_path;
+       path_get(&wrf->f_path);
        f->f_mapping = wrf->f_path.dentry->d_inode->i_mapping;
 
        f->f_pos = 0;
@@ -1067,14 +1067,33 @@ int do_pipe(int *fd)
  err_fdr:
        put_unused_fd(fdr);
  err_read_pipe:
-       dput(fr->f_dentry);
-       mntput(fr->f_vfsmnt);
+       path_put(&fr->f_path);
        put_filp(fr);
  err_write_pipe:
        free_write_pipe(fw);
        return error;
 }
 
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way Unix traditionally does this, though.
+ */
+asmlinkage long __weak sys_pipe(int __user *fildes)
+{
+       int fd[2];
+       int error;
+
+       error = do_pipe(fd);
+       if (!error) {
+               if (copy_to_user(fildes, fd, sizeof(fd))) {
+                       sys_close(fd[0]);
+                       sys_close(fd[1]);
+                       error = -EFAULT;
+               }
+       }
+       return error;
+}
+
 /*
  * pipefs should _never_ be mounted by userland - too much of security hassle,
  * no real gain from having the whole whorehouse mounted. So we don't need