From: Christoph Hellwig <hch@infradead.org>
To: xfs@oss.sgi.com
Subject: [PATCH 5/3] cleanup xfs_imap useage
Date: Tue, 21 Oct 2008 07:53:53 -0400 [thread overview]
Message-ID: <20081021115353.GA2881@infradead.org> (raw)
Embedd a struct xfs_imap into the xfs_inode as that's what we use
xfs_imap and xfs_imap_to_bp on mostly. Remove the two superflous
members of struct xfs_imap so that the inode size stays the same.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Index: xfs-2.6/fs/xfs/xfs_inode.c
===================================================================
--- xfs-2.6.orig/fs/xfs/xfs_inode.c 2008-10-21 11:50:56.000000000 +0200
+++ xfs-2.6/fs/xfs/xfs_inode.c 2008-10-21 11:58:37.000000000 +0200
@@ -23,7 +23,6 @@
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
-#include "xfs_imap.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
#include "xfs_sb.h"
@@ -140,7 +139,7 @@ xfs_imap(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
- xfs_imap_t *imap,
+ struct xfs_imap *imap,
uint flags)
{
xfs_fsblock_t fsbno;
@@ -156,8 +155,6 @@ xfs_imap(
imap->im_blkno = XFS_FSB_TO_DADDR(mp, fsbno);
imap->im_len = XFS_FSB_TO_BB(mp, len);
- imap->im_agblkno = XFS_FSB_TO_AGBNO(mp, fsbno);
- imap->im_ioffset = (ushort)off;
imap->im_boffset = (ushort)(off << mp->m_sb.sb_inodelog);
/*
@@ -188,7 +185,7 @@ STATIC int
xfs_imap_to_bp(
xfs_mount_t *mp,
xfs_trans_t *tp,
- xfs_imap_t *imap,
+ struct xfs_imap *imap,
xfs_buf_t **bpp,
uint buf_flags,
uint imap_flags)
@@ -286,7 +283,7 @@ xfs_inotobp(
int *offset,
uint imap_flags)
{
- xfs_imap_t imap;
+ struct xfs_imap imap;
xfs_buf_t *bp;
int error;
@@ -331,17 +328,12 @@ xfs_itobp(
xfs_buf_t **bpp,
uint buf_flags)
{
- xfs_imap_t imap;
xfs_buf_t *bp;
int error;
- ASSERT(ip->i_blkno != 0);
+ ASSERT(ip->i_imap.im_blkno != 0);
- imap.im_blkno = ip->i_blkno;
- imap.im_len = ip->i_len;
- imap.im_boffset = ip->i_boffset;
-
- error = xfs_imap_to_bp(mp, tp, &imap, &bp, buf_flags, 0);
+ error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp, buf_flags, 0);
if (error)
return error;
@@ -352,7 +344,7 @@ xfs_itobp(
return EAGAIN;
}
- *dipp = (xfs_dinode_t *)xfs_buf_offset(bp, imap.im_boffset);
+ *dipp = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
*bpp = bp;
return 0;
}
@@ -855,9 +847,7 @@ xfs_inode_alloc(
/* initialise the xfs inode */
ip->i_ino = ino;
ip->i_mount = mp;
- ip->i_blkno = 0;
- ip->i_len = 0;
- ip->i_boffset =0;
+ memset(&ip->i_imap, 0, sizeof(struct xfs_imap));
ip->i_afp = NULL;
memset(&ip->i_df, 0, sizeof(xfs_ifork_t));
ip->i_flags = 0;
@@ -913,7 +903,6 @@ xfs_iread(
xfs_buf_t *bp;
xfs_dinode_t *dip;
xfs_inode_t *ip;
- xfs_imap_t imap;
int error;
ip = xfs_inode_alloc(mp, ino);
@@ -921,27 +910,23 @@ xfs_iread(
return ENOMEM;
/*
- * Get pointer's to the on-disk inode and the buffer containing it.
+ * Fill in the location information in the in-core inode.
*/
- imap.im_blkno = bno;
- error = xfs_imap(mp, tp, ip->i_ino, &imap, imap_flags);
+ ip->i_imap.im_blkno = bno;
+ error = xfs_imap(mp, tp, ip->i_ino, &ip->i_imap, imap_flags);
if (error)
goto out_destroy_inode;
+ ASSERT(bno == 0 || bno == ip->i_imap.im_blkno);
+
/*
- * Fill in the fields in the inode that will be used to
- * map the inode to its buffer from now on.
+ * Get pointers to the on-disk inode and the buffer containing it.
*/
- ip->i_blkno = imap.im_blkno;
- ip->i_len = imap.im_len;
- ip->i_boffset = imap.im_boffset;
- ASSERT(bno == 0 || bno == imap.im_blkno);
-
- error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, imap_flags);
+ error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp,
+ XFS_BUF_LOCK, imap_flags);
if (error)
goto out_destroy_inode;
-
- dip = (xfs_dinode_t *)xfs_buf_offset(bp, imap.im_boffset);
+ dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
/*
* If we got something that isn't an inode it means someone
@@ -1942,7 +1927,7 @@ xfs_iunlink(
ASSERT(be32_to_cpu(dip->di_next_unlinked) == NULLAGINO);
/* both on-disk, don't endian flip twice */
dip->di_next_unlinked = agi->agi_unlinked[bucket_index];
- offset = ip->i_boffset +
+ offset = ip->i_imap.im_boffset +
offsetof(xfs_dinode_t, di_next_unlinked);
xfs_trans_inode_buf(tp, ibp);
xfs_trans_log_buf(tp, ibp, offset,
@@ -2054,7 +2039,7 @@ xfs_iunlink_remove(
ASSERT(next_agino != 0);
if (next_agino != NULLAGINO) {
dip->di_next_unlinked = cpu_to_be32(NULLAGINO);
- offset = ip->i_boffset +
+ offset = ip->i_imap.im_boffset +
offsetof(xfs_dinode_t, di_next_unlinked);
xfs_trans_inode_buf(tp, ibp);
xfs_trans_log_buf(tp, ibp, offset,
@@ -2117,7 +2102,7 @@ xfs_iunlink_remove(
ASSERT(next_agino != agino);
if (next_agino != NULLAGINO) {
dip->di_next_unlinked = cpu_to_be32(NULLAGINO);
- offset = ip->i_boffset +
+ offset = ip->i_imap.im_boffset +
offsetof(xfs_dinode_t, di_next_unlinked);
xfs_trans_inode_buf(tp, ibp);
xfs_trans_log_buf(tp, ibp, offset,
@@ -3296,7 +3281,7 @@ xfs_iflush_int(
}
/* set *dip = inode's place in the buffer */
- dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_boffset);
+ dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
/*
* Clear i_update_core before copying out the data.
Index: xfs-2.6/fs/xfs/xfs_inode.h
===================================================================
--- xfs-2.6.orig/fs/xfs/xfs_inode.h 2008-10-21 11:49:04.000000000 +0200
+++ xfs-2.6/fs/xfs/xfs_inode.h 2008-10-21 11:56:52.000000000 +0200
@@ -84,6 +84,16 @@ typedef struct xfs_ifork {
} xfs_ifork_t;
/*
+ * Inode location information. Stored in the inode and passed to
+ * xfs_imap_to_bp() to get a buffer and dinode for a given inode.
+ */
+struct xfs_imap {
+ xfs_daddr_t im_blkno; /* starting BB of inode chunk */
+ uint im_len; /* length in BBs of inode chunk */
+ ushort im_boffset; /* inode offset in block in bytes */
+};
+
+/*
* This is the xfs in-core inode structure.
* Most of the on-disk inode is embedded in the i_d field.
*
@@ -239,9 +249,7 @@ typedef struct xfs_inode {
/* Inode location stuff */
xfs_ino_t i_ino; /* inode number (agno/agino)*/
- xfs_daddr_t i_blkno; /* blkno of inode buffer */
- ushort i_len; /* len of inode buffer */
- ushort i_boffset; /* off of inode in buffer */
+ struct xfs_imap i_imap; /* location for xfs_imap() */
/* Extent information. */
xfs_ifork_t *i_afp; /* attribute fork pointer */
Index: xfs-2.6/fs/xfs/xfs_inode_item.c
===================================================================
--- xfs-2.6.orig/fs/xfs/xfs_inode_item.c 2008-10-21 11:49:01.000000000 +0200
+++ xfs-2.6/fs/xfs/xfs_inode_item.c 2008-10-21 11:52:20.000000000 +0200
@@ -943,9 +943,9 @@ xfs_inode_item_init(
iip->ili_format.ilf_type = XFS_LI_INODE;
iip->ili_format.ilf_ino = ip->i_ino;
- iip->ili_format.ilf_blkno = ip->i_blkno;
- iip->ili_format.ilf_len = ip->i_len;
- iip->ili_format.ilf_boffset = ip->i_boffset;
+ iip->ili_format.ilf_blkno = ip->i_imap.im_blkno;
+ iip->ili_format.ilf_len = ip->i_imap.im_len;
+ iip->ili_format.ilf_boffset = ip->i_imap.im_boffset;
}
/*
Index: xfs-2.6/fs/xfs/xfs_itable.c
===================================================================
--- xfs-2.6.orig/fs/xfs/xfs_itable.c 2008-10-21 11:49:00.000000000 +0200
+++ xfs-2.6/fs/xfs/xfs_itable.c 2008-10-21 11:52:20.000000000 +0200
@@ -69,7 +69,7 @@ xfs_bulkstat_one_iget(
}
ASSERT(ip != NULL);
- ASSERT(ip->i_blkno != (xfs_daddr_t)0);
+ ASSERT(ip->i_imap.im_blkno != 0);
dic = &ip->i_d;
Index: xfs-2.6/fs/xfs/xfs_log_recover.c
===================================================================
--- xfs-2.6.orig/fs/xfs/xfs_log_recover.c 2008-10-21 11:49:04.000000000 +0200
+++ xfs-2.6/fs/xfs/xfs_log_recover.c 2008-10-21 11:52:20.000000000 +0200
@@ -36,7 +36,6 @@
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_inode_item.h"
-#include "xfs_imap.h"
#include "xfs_alloc.h"
#include "xfs_ialloc.h"
#include "xfs_log_priv.h"
Index: xfs-2.6/fs/xfs/xfs_imap.h
===================================================================
--- xfs-2.6.orig/fs/xfs/xfs_imap.h 2008-10-21 11:51:12.000000000 +0200
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2000,2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#ifndef __XFS_IMAP_H__
-#define __XFS_IMAP_H__
-
-/*
- * This is the structure passed to xfs_imap() to map
- * an inode number to its on disk location.
- */
-typedef struct xfs_imap {
- xfs_daddr_t im_blkno; /* starting BB of inode chunk */
- uint im_len; /* length in BBs of inode chunk */
- xfs_agblock_t im_agblkno; /* logical block of inode chunk in ag */
- ushort im_ioffset; /* inode offset in block in "inodes" */
- ushort im_boffset; /* inode offset in block in bytes */
-} xfs_imap_t;
-
-#endif /* __XFS_IMAP_H__ */
reply other threads:[~2008-10-21 11:52 UTC|newest]
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