[PATCH] use struct kvec in struct uio

[Christoph Hellwig <hch@xxxxxx>]

All but one useage of struct uio are for kernel pointers, so let's use
struct kvec instead of struct iovec.  Because readlink by handle still
uses it with a user pointer we still have two sparse warnings, but the
noise level is reduced quite a bit by this.


Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Index: linux-2.6/fs/xfs/support/move.h
===================================================================
--- linux-2.6.orig/fs/xfs/support/move.h        2006-11-29 16:27:25.000000000 
+0100
+++ linux-2.6/fs/xfs/support/move.h     2006-11-29 16:30:18.000000000 +0100
@@ -55,7 +55,7 @@
 };
 
 struct uio {
-       struct iovec    *uio_iov;   /* pointer to array of iovecs */
+       struct kvec     *uio_iov;   /* pointer to array of iovecs */
        int             uio_iovcnt; /* number of iovecs in array */
        xfs_off_t       uio_offset; /* offset in file this uio corresponds to */
        int             uio_resid;  /* residual i/o count */
@@ -63,7 +63,7 @@
 };
 
 typedef struct uio uio_t;
-typedef struct iovec iovec_t;
+typedef struct kvec iovec_t;
 
 extern int     xfs_uio_read (caddr_t, size_t, uio_t *);
 
Index: linux-2.6/fs/xfs/linux-2.6/xfs_ioctl.c
===================================================================
--- linux-2.6.orig/fs/xfs/linux-2.6/xfs_ioctl.c 2006-11-29 16:33:37.000000000 
+0100
+++ linux-2.6/fs/xfs/linux-2.6/xfs_ioctl.c      2006-11-29 16:34:43.000000000 
+0100
@@ -388,7 +388,7 @@
        aiov.iov_len    = olen;
        aiov.iov_base   = hreq.ohandle;
 
-       auio.uio_iov    = &aiov;
+       auio.uio_iov    = (struct kvec *)&aiov;
        auio.uio_iovcnt = 1;
        auio.uio_offset = 0;
        auio.uio_segflg = UIO_USERSPACE;