[XFS] use filldir internally

Currently xfs has a rather complicated internal scheme to allow for
different directory formats in IRIX. This patch rips all code related to
this out and pushes useage of the Linux filldir callback into the lowlevel
directory code. This does not make the code any less portable because
filldir can be used to create dirents of all possible variations
(including the IRIX ones as proved by the IRIX binary emulation code under
arch/mips/).

This patch get rid of an unessecary copy in the readdir path, about 400
lines of code and one of the last two users of the uio structure.

This version is updated to deal with dmapi aswell which greatly simplifies
the get_dirattrs code. The dmapi part has been tested using the
get_dirattrs tools from the xfstest dmapi suite1 with various small and
large directories.

SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29478a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h
index 104f64a9879..5c89be47546 100644
--- a/fs/xfs/xfs_types.h
+++ b/fs/xfs/xfs_types.h
@@ -151,18 +151,6 @@ typedef __uint8_t	xfs_arch_t;	/* architecture of an xfs fs */
  */
 #define MAXNAMELEN	256
 
-typedef struct xfs_dirent {		/* data from readdir() */
-	xfs_ino_t	d_ino;		/* inode number of entry */
-	xfs_off_t	d_off;		/* offset of disk directory entry */
-	unsigned short	d_reclen;	/* length of this record */
-	char		d_name[1];	/* name of file */
-} xfs_dirent_t;
-
-#define DIRENTBASESIZE		(((xfs_dirent_t *)0)->d_name - (char *)0)
-#define DIRENTSIZE(namelen)	\
-	((DIRENTBASESIZE + (namelen) + \
-		sizeof(xfs_off_t)) & ~(sizeof(xfs_off_t) - 1))
-
 typedef enum {
 	XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
 } xfs_lookup_t;