X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fgfs2%2Fbmap.c;h=93fa427bb5f501cee6da6ab88afbfd921f584295;hb=96fdc72ddfe8aa3eb1f51e78cc13babefbf26dda;hp=98fa07c2b710ee6db00c5a1942638550d430474d;hpb=feaa7bba026c181ce071d5a4884f7f9dd26207a1;p=safe%2Fjmp%2Flinux-2.6

diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 98fa07c..93fa427 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -4,30 +4,29 @@
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
  */
 
-#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/completion.h>
 #include <linux/buffer_head.h>
 #include <linux/gfs2_ondisk.h>
 #include <linux/crc32.h>
+#include <linux/lm_interface.h>
 
 #include "gfs2.h"
-#include "lm_interface.h"
 #include "incore.h"
 #include "bmap.h"
 #include "glock.h"
 #include "inode.h"
 #include "meta_io.h"
-#include "page.h"
 #include "quota.h"
 #include "rgrp.h"
 #include "trans.h"
 #include "dir.h"
 #include "util.h"
+#include "ops_address.h"
 
 /* This doesn't need to be that large as max 64 bit pointers in a 4k
  * block is 512, so __u16 is fine for that. It saves stack space to
@@ -38,8 +37,8 @@ struct metapath {
 };
 
 typedef int (*block_call_t) (struct gfs2_inode *ip, struct buffer_head *dibh,
-			     struct buffer_head *bh, uint64_t *top,
-			     uint64_t *bottom, unsigned int height,
+			     struct buffer_head *bh, __be64 *top,
+			     __be64 *bottom, unsigned int height,
 			     void *data);
 
 struct strip_mine {
@@ -48,6 +47,66 @@ struct strip_mine {
 };
 
 /**
+ * gfs2_unstuffer_page - unstuff a stuffed inode into a block cached by a page
+ * @ip: the inode
+ * @dibh: the dinode buffer
+ * @block: the block number that was allocated
+ * @private: any locked page held by the caller process
+ *
+ * Returns: errno
+ */
+
+static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
+			       u64 block, struct page *page)
+{
+	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+	struct inode *inode = &ip->i_inode;
+	struct buffer_head *bh;
+	int release = 0;
+
+	if (!page || page->index) {
+		page = grab_cache_page(inode->i_mapping, 0);
+		if (!page)
+			return -ENOMEM;
+		release = 1;
+	}
+
+	if (!PageUptodate(page)) {
+		void *kaddr = kmap(page);
+
+		memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode),
+		       ip->i_di.di_size);
+		memset(kaddr + ip->i_di.di_size, 0,
+		       PAGE_CACHE_SIZE - ip->i_di.di_size);
+		kunmap(page);
+
+		SetPageUptodate(page);
+	}
+
+	if (!page_has_buffers(page))
+		create_empty_buffers(page, 1 << inode->i_blkbits,
+				     (1 << BH_Uptodate));
+
+	bh = page_buffers(page);
+
+	if (!buffer_mapped(bh))
+		map_bh(bh, inode->i_sb, block);
+
+	set_buffer_uptodate(bh);
+	if (!gfs2_is_jdata(ip))
+		mark_buffer_dirty(bh);
+	if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
+		gfs2_trans_add_bh(ip->i_gl, bh, 0);
+
+	if (release) {
+		unlock_page(page);
+		page_cache_release(page);
+	}
+
+	return 0;
+}
+
+/**
  * gfs2_unstuff_dinode - Unstuff a dinode when the data has grown too big
  * @ip: The GFS2 inode to unstuff
  * @unstuffer: the routine that handles unstuffing a non-zero length file
@@ -59,11 +118,11 @@ struct strip_mine {
  * Returns: errno
  */
 
-int gfs2_unstuff_dinode(struct gfs2_inode *ip, gfs2_unstuffer_t unstuffer,
-			void *private)
+int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page)
 {
 	struct buffer_head *bh, *dibh;
-	uint64_t block = 0;
+	struct gfs2_dinode *di;
+	u64 block = 0;
 	int isdir = gfs2_is_dir(ip);
 	int error;
 
@@ -72,7 +131,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, gfs2_unstuffer_t unstuffer,
 	error = gfs2_meta_inode_buffer(ip, &dibh);
 	if (error)
 		goto out;
-		
+
 	if (ip->i_di.di_size) {
 		/* Get a free block, fill it with the stuffed data,
 		   and write it out to disk */
@@ -83,14 +142,13 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, gfs2_unstuffer_t unstuffer,
 			error = gfs2_dir_get_new_buffer(ip, block, &bh);
 			if (error)
 				goto out_brelse;
-			gfs2_buffer_copy_tail(bh,
-					      sizeof(struct gfs2_meta_header),
+			gfs2_buffer_copy_tail(bh, sizeof(struct gfs2_meta_header),
 					      dibh, sizeof(struct gfs2_dinode));
 			brelse(bh);
 		} else {
 			block = gfs2_alloc_data(ip);
 
-			error = unstuffer(ip, dibh, block, private);
+			error = gfs2_unstuffer_page(ip, dibh, block, page);
 			if (error)
 				goto out_brelse;
 		}
@@ -99,25 +157,23 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, gfs2_unstuffer_t unstuffer,
 	/*  Set up the pointer to the new block  */
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-
+	di = (struct gfs2_dinode *)dibh->b_data;
 	gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
 
 	if (ip->i_di.di_size) {
-		*(uint64_t *)(dibh->b_data + sizeof(struct gfs2_dinode)) =
-			cpu_to_be64(block);
+		*(__be64 *)(di + 1) = cpu_to_be64(block);
 		ip->i_di.di_blocks++;
+		gfs2_set_inode_blocks(&ip->i_inode);
+		di->di_blocks = cpu_to_be64(ip->i_di.di_blocks);
 	}
 
 	ip->i_di.di_height = 1;
+	di->di_height = cpu_to_be16(1);
 
-	gfs2_dinode_out(&ip->i_di, dibh->b_data);
-
- out_brelse:
+out_brelse:
 	brelse(dibh);
-
- out:
+out:
 	up_write(&ip->i_rw_mutex);
-
 	return error;
 }
 
@@ -134,10 +190,10 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, gfs2_unstuffer_t unstuffer,
  * Returns: the height the tree should be
  */
 
-static unsigned int calc_tree_height(struct gfs2_inode *ip, uint64_t size)
+static unsigned int calc_tree_height(struct gfs2_inode *ip, u64 size)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-	uint64_t *arr;
+	u64 *arr;
 	unsigned int max, height;
 
 	if (ip->i_di.di_size > size)
@@ -173,8 +229,9 @@ static int build_height(struct inode *inode, unsigned height)
 	unsigned new_height = height - ip->i_di.di_height;
 	struct buffer_head *dibh;
 	struct buffer_head *blocks[GFS2_MAX_META_HEIGHT];
+	struct gfs2_dinode *di;
 	int error;
-	u64 *bp;
+	__be64 *bp;
 	u64 bn;
 	unsigned n;
 
@@ -190,7 +247,7 @@ static int build_height(struct inode *inode, unsigned height)
 		blocks[n] = gfs2_meta_new(ip->i_gl, bn);
 		gfs2_trans_add_bh(ip->i_gl, blocks[n], 1);
 	}
-	
+
 	n = 0;
 	bn = blocks[0]->b_blocknr;
 	if (new_height > 1) {
@@ -199,7 +256,7 @@ static int build_height(struct inode *inode, unsigned height)
 					  GFS2_FORMAT_IN);
 			gfs2_buffer_clear_tail(blocks[n],
 					       sizeof(struct gfs2_meta_header));
-			bp = (u64 *)(blocks[n]->b_data +
+			bp = (__be64 *)(blocks[n]->b_data +
 				     sizeof(struct gfs2_meta_header));
 			*bp = cpu_to_be64(blocks[n+1]->b_blocknr);
 			brelse(blocks[n]);
@@ -211,12 +268,14 @@ static int build_height(struct inode *inode, unsigned height)
 			      dibh, sizeof(struct gfs2_dinode));
 	brelse(blocks[n]);
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+	di = (struct gfs2_dinode *)dibh->b_data;
 	gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
-	bp = (u64 *)(dibh->b_data + sizeof(struct gfs2_dinode));
-	*bp = cpu_to_be64(bn);
+	*(__be64 *)(di + 1) = cpu_to_be64(bn);
 	ip->i_di.di_height += new_height;
 	ip->i_di.di_blocks += new_height;
-	gfs2_dinode_out(&ip->i_di, dibh->b_data);
+	gfs2_set_inode_blocks(&ip->i_inode);
+	di->di_height = cpu_to_be16(ip->i_di.di_height);
+	di->di_blocks = cpu_to_be64(ip->i_di.di_blocks);
 	brelse(dibh);
 	return error;
 }
@@ -280,15 +339,15 @@ static int build_height(struct inode *inode, unsigned height)
  *
  */
 
-static void find_metapath(struct gfs2_inode *ip, uint64_t block,
+static void find_metapath(struct gfs2_inode *ip, u64 block,
 			  struct metapath *mp)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-	uint64_t b = block;
+	u64 b = block;
 	unsigned int i;
 
 	for (i = ip->i_di.di_height; i--;)
-		mp->mp_list[i] = (__u16)do_div(b, sdp->sd_inptrs);
+		mp->mp_list[i] = do_div(b, sdp->sd_inptrs);
 
 }
 
@@ -303,15 +362,15 @@ static void find_metapath(struct gfs2_inode *ip, uint64_t block,
  * metadata tree.
  */
 
-static inline u64 *metapointer(struct buffer_head *bh, int *boundary,
+static inline __be64 *metapointer(struct buffer_head *bh, int *boundary,
 			       unsigned int height, const struct metapath *mp)
 {
 	unsigned int head_size = (height > 0) ?
 		sizeof(struct gfs2_meta_header) : sizeof(struct gfs2_dinode);
-	u64 *ptr;
+	__be64 *ptr;
 	*boundary = 0;
-	ptr = ((u64 *)(bh->b_data + head_size)) + mp->mp_list[height];
-	if (ptr + 1 == (u64*)(bh->b_data + bh->b_size))
+	ptr = ((__be64 *)(bh->b_data + head_size)) + mp->mp_list[height];
+	if (ptr + 1 == (__be64 *)(bh->b_data + bh->b_size))
 		*boundary = 1;
 	return ptr;
 }
@@ -334,10 +393,10 @@ static inline u64 *metapointer(struct buffer_head *bh, int *boundary,
 
 static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh,
 			unsigned int height, struct metapath *mp, int create,
-			int *new, uint64_t *block)
+			int *new, u64 *block)
 {
 	int boundary;
-	uint64_t *ptr = metapointer(bh, &boundary, height, mp);
+	__be64 *ptr = metapointer(bh, &boundary, height, mp);
 
 	if (*ptr) {
 		*block = be64_to_cpu(*ptr);
@@ -358,18 +417,35 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh,
 
 	*ptr = cpu_to_be64(*block);
 	ip->i_di.di_blocks++;
+	gfs2_set_inode_blocks(&ip->i_inode);
 
 	*new = 1;
 	return 0;
 }
 
+static inline void bmap_lock(struct inode *inode, int create)
+{
+	struct gfs2_inode *ip = GFS2_I(inode);
+	if (create)
+		down_write(&ip->i_rw_mutex);
+	else
+		down_read(&ip->i_rw_mutex);
+}
+
+static inline void bmap_unlock(struct inode *inode, int create)
+{
+	struct gfs2_inode *ip = GFS2_I(inode);
+	if (create)
+		up_write(&ip->i_rw_mutex);
+	else
+		up_read(&ip->i_rw_mutex);
+}
+
 /**
- * gfs2_block_pointers - Map a block from an inode to a disk block
+ * gfs2_block_map - Map a block from an inode to a disk block
  * @inode: The inode
  * @lblock: The logical block number
- * @new: Value/Result argument (1 = may create/did create new blocks)
- * @boundary: gets set if we've hit a block boundary
- * @mp: metapath to use
+ * @bh_map: The bh to be mapped
  *
  * Find the block number on the current device which corresponds to an
  * inode's block. If the block had to be created, "new" will be set.
@@ -377,146 +453,121 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh,
  * Returns: errno
  */
 
-static struct buffer_head *gfs2_block_pointers(struct inode *inode, u64 lblock,
-					       int *new, u64 *dblock,
-					       int *boundary,
-					       struct metapath *mp)
+int gfs2_block_map(struct inode *inode, u64 lblock, int create,
+		   struct buffer_head *bh_map)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_sbd *sdp = GFS2_SB(inode);
 	struct buffer_head *bh;
-	int create = *new;
 	unsigned int bsize;
 	unsigned int height;
 	unsigned int end_of_metadata;
 	unsigned int x;
 	int error = 0;
+	int new = 0;
+	u64 dblock = 0;
+	int boundary;
+	unsigned int maxlen = bh_map->b_size >> inode->i_blkbits;
+	struct metapath mp;
+	u64 size;
 
-	*new = 0;
-	*dblock = 0;
+	BUG_ON(maxlen == 0);
 
 	if (gfs2_assert_warn(sdp, !gfs2_is_stuffed(ip)))
-		goto out;
-
-	bsize = (gfs2_is_dir(ip)) ? sdp->sd_jbsize : sdp->sd_sb.sb_bsize;
-
-	height = calc_tree_height(ip, (lblock + 1) * bsize);
-	if (ip->i_di.di_height < height) {
-		if (!create)
-			goto out;
+		return 0;
 
-		error = build_height(inode, height);
-		if (error)
-			goto out;
+	bmap_lock(inode, create);
+	clear_buffer_mapped(bh_map);
+	clear_buffer_new(bh_map);
+	clear_buffer_boundary(bh_map);
+	bsize = gfs2_is_dir(ip) ? sdp->sd_jbsize : sdp->sd_sb.sb_bsize;
+	size = (lblock + 1) * bsize;
+
+	if (size > ip->i_di.di_size) {
+		height = calc_tree_height(ip, size);
+		if (ip->i_di.di_height < height) {
+			if (!create)
+				goto out_ok;
+	
+			error = build_height(inode, height);
+			if (error)
+				goto out_fail;
+		}
 	}
 
-	find_metapath(ip, lblock, mp);
+	find_metapath(ip, lblock, &mp);
 	end_of_metadata = ip->i_di.di_height - 1;
-
 	error = gfs2_meta_inode_buffer(ip, &bh);
 	if (error)
-		goto out;
+		goto out_fail;
 
 	for (x = 0; x < end_of_metadata; x++) {
-		lookup_block(ip, bh, x, mp, create, new, dblock);
+		lookup_block(ip, bh, x, &mp, create, &new, &dblock);
 		brelse(bh);
-		if (!*dblock)
-			goto out;
+		if (!dblock)
+			goto out_ok;
 
-		error = gfs2_meta_indirect_buffer(ip, x+1, *dblock, *new, &bh);
+		error = gfs2_meta_indirect_buffer(ip, x+1, dblock, new, &bh);
 		if (error)
-			goto out;
+			goto out_fail;
 	}
 
-	*boundary = lookup_block(ip, bh, end_of_metadata, mp, create, new, dblock);
-	if (*new) {
-		struct buffer_head *dibh;
-		error = gfs2_meta_inode_buffer(ip, &dibh);
-		if (!error) {
-			gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-			gfs2_dinode_out(&ip->i_di, dibh->b_data);
-			brelse(dibh);
+	boundary = lookup_block(ip, bh, end_of_metadata, &mp, create, &new, &dblock);
+	if (dblock) {
+		map_bh(bh_map, inode->i_sb, dblock);
+		if (boundary)
+			set_buffer_boundary(bh_map);
+		if (new) {
+			struct buffer_head *dibh;
+			error = gfs2_meta_inode_buffer(ip, &dibh);
+			if (!error) {
+				gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+				gfs2_dinode_out(ip, dibh->b_data);
+				brelse(dibh);
+			}
+			set_buffer_new(bh_map);
+			goto out_brelse;
 		}
-	}
-	return bh;
-out:
-	return ERR_PTR(error);
-}
+		while(--maxlen && !buffer_boundary(bh_map)) {
+			u64 eblock;
 
-
-static inline void bmap_lock(struct inode *inode, int create)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-	if (create)
-		down_write(&ip->i_rw_mutex);
-	else
-		down_read(&ip->i_rw_mutex);
-}
-
-static inline void bmap_unlock(struct inode *inode, int create)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-	if (create)
-		up_write(&ip->i_rw_mutex);
-	else
-		up_read(&ip->i_rw_mutex);
-}
-
-int gfs2_block_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, int *boundary)
-{
-	struct metapath mp;
-	struct buffer_head *bh;
-	int create = *new;
-
-	bmap_lock(inode, create);
-	bh = gfs2_block_pointers(inode, lblock, new, dblock, boundary, &mp);
-	bmap_unlock(inode, create);
-	if (!bh)
-		return 0;
-	if (IS_ERR(bh))
-		return PTR_ERR(bh);
+			mp.mp_list[end_of_metadata]++;
+			boundary = lookup_block(ip, bh, end_of_metadata, &mp, 0, &new, &eblock);
+			if (eblock != ++dblock)
+				break;
+			bh_map->b_size += (1 << inode->i_blkbits);
+			if (boundary)
+				set_buffer_boundary(bh_map);
+		}
+	}
+out_brelse:
 	brelse(bh);
-	return 0;
+out_ok:
+	error = 0;
+out_fail:
+	bmap_unlock(inode, create);
+	return error;
 }
 
 int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen)
 {
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_sbd *sdp = GFS2_SB(inode);
-	struct metapath mp;
-	struct buffer_head *bh;
-	int boundary;
+	struct buffer_head bh = { .b_state = 0, .b_blocknr = 0 };
+	int ret;
 	int create = *new;
 
 	BUG_ON(!extlen);
 	BUG_ON(!dblock);
 	BUG_ON(!new);
 
-	bmap_lock(inode, create);
-	bh = gfs2_block_pointers(inode, lblock, new, dblock, &boundary, &mp);
-	*extlen = 1;
-
-	if (bh && !IS_ERR(bh) && *dblock && !*new) {
-		u64 tmp_dblock;
-		int tmp_new;
-		unsigned int nptrs;
-		unsigned end_of_metadata = ip->i_di.di_height - 1;
-		
-		nptrs = (end_of_metadata) ? sdp->sd_inptrs : sdp->sd_diptrs;
-		while (++mp.mp_list[end_of_metadata] < nptrs) {
-			lookup_block(ip, bh, end_of_metadata, &mp, 0, &tmp_new, &tmp_dblock);
-			if (*dblock + *extlen != tmp_dblock)
-				break;
-			(*extlen)++;
-		}
-	}
-	bmap_unlock(inode, create);
-	if (!bh)
-		return 0;
-	if (IS_ERR(bh))
-		return PTR_ERR(bh);
-	brelse(bh);
-	return 0;
+	bh.b_size = 1 << (inode->i_blkbits + 5);
+	ret = gfs2_block_map(inode, lblock, create, &bh);
+	*extlen = bh.b_size >> inode->i_blkbits;
+	*dblock = bh.b_blocknr;
+	if (buffer_new(&bh))
+		*new = 1;
+	else
+		*new = 0;
+	return ret;
 }
 
 /**
@@ -538,13 +589,13 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
 
 static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh,
 			  struct metapath *mp, unsigned int height,
-			  uint64_t block, int first, block_call_t bc,
+			  u64 block, int first, block_call_t bc,
 			  void *data)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct buffer_head *bh = NULL;
-	uint64_t *top, *bottom;
-	uint64_t bn;
+	__be64 *top, *bottom;
+	u64 bn;
 	int error;
 	int mh_size = sizeof(struct gfs2_meta_header);
 
@@ -554,19 +605,17 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh,
 			return error;
 		dibh = bh;
 
-		top = (uint64_t *)(bh->b_data + sizeof(struct gfs2_dinode)) +
-			mp->mp_list[0];
-		bottom = (uint64_t *)(bh->b_data + sizeof(struct gfs2_dinode)) +
-			sdp->sd_diptrs;
+		top = (__be64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + mp->mp_list[0];
+		bottom = (__be64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + sdp->sd_diptrs;
 	} else {
 		error = gfs2_meta_indirect_buffer(ip, height, block, 0, &bh);
 		if (error)
 			return error;
 
-		top = (uint64_t *)(bh->b_data + mh_size) +
-				  ((first) ? mp->mp_list[height] : 0);
+		top = (__be64 *)(bh->b_data + mh_size) +
+				  (first ? mp->mp_list[height] : 0);
 
-		bottom = (uint64_t *)(bh->b_data + mh_size) + sdp->sd_inptrs;
+		bottom = (__be64 *)(bh->b_data + mh_size) + sdp->sd_inptrs;
 	}
 
 	error = bc(ip, dibh, bh, top, bottom, height, data);
@@ -586,9 +635,8 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh,
 				break;
 		}
 
- out:
+out:
 	brelse(bh);
-
 	return error;
 }
 
@@ -606,15 +654,15 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh,
  */
 
 static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
-		    struct buffer_head *bh, uint64_t *top, uint64_t *bottom,
+		    struct buffer_head *bh, __be64 *top, __be64 *bottom,
 		    unsigned int height, void *data)
 {
 	struct strip_mine *sm = data;
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_rgrp_list rlist;
-	uint64_t bn, bstart;
-	uint32_t blen;
-	uint64_t *p;
+	u64 bn, bstart;
+	u32 blen;
+	__be64 *p;
 	unsigned int rg_blocks = 0;
 	int metadata;
 	unsigned int revokes = 0;
@@ -671,7 +719,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
 	for (x = 0; x < rlist.rl_rgrps; x++) {
 		struct gfs2_rgrpd *rgd;
 		rgd = rlist.rl_ghs[x].gh_gl->gl_object;
-		rg_blocks += rgd->rd_ri.ri_length;
+		rg_blocks += rgd->rd_length;
 	}
 
 	error = gfs2_glock_nq_m(rlist.rl_rgrps, rlist.rl_ghs);
@@ -716,6 +764,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
 		if (!ip->i_di.di_blocks)
 			gfs2_consist_inode(ip);
 		ip->i_di.di_blocks--;
+		gfs2_set_inode_blocks(&ip->i_inode);
 	}
 	if (bstart) {
 		if (metadata)
@@ -724,23 +773,20 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
 			gfs2_free_data(ip, bstart, blen);
 	}
 
-	ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
 
-	gfs2_dinode_out(&ip->i_di, dibh->b_data);
+	gfs2_dinode_out(ip, dibh->b_data);
 
 	up_write(&ip->i_rw_mutex);
 
 	gfs2_trans_end(sdp);
 
- out_rg_gunlock:
+out_rg_gunlock:
 	gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs);
-
- out_rlist:
+out_rlist:
 	gfs2_rlist_free(&rlist);
-
- out:
+out:
 	gfs2_glock_dq_uninit(&ip->i_alloc.al_ri_gh);
-
 	return error;
 }
 
@@ -754,7 +800,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
  * Returns: errno
  */
 
-static int do_grow(struct gfs2_inode *ip, uint64_t size)
+static int do_grow(struct gfs2_inode *ip, u64 size)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_alloc *al;
@@ -768,7 +814,7 @@ static int do_grow(struct gfs2_inode *ip, uint64_t size)
 	if (error)
 		goto out;
 
-	error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid);
+	error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
 	if (error)
 		goto out_gunlock_q;
 
@@ -779,15 +825,14 @@ static int do_grow(struct gfs2_inode *ip, uint64_t size)
 		goto out_gunlock_q;
 
 	error = gfs2_trans_begin(sdp,
-			sdp->sd_max_height + al->al_rgd->rd_ri.ri_length +
+			sdp->sd_max_height + al->al_rgd->rd_length +
 			RES_JDATA + RES_DINODE + RES_STATFS + RES_QUOTA, 0);
 	if (error)
 		goto out_ipres;
 
 	if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) {
 		if (gfs2_is_stuffed(ip)) {
-			error = gfs2_unstuff_dinode(ip, gfs2_unstuffer_page,
-						    NULL);
+			error = gfs2_unstuff_dinode(ip, NULL);
 			if (error)
 				goto out_end_trans;
 		}
@@ -803,32 +848,101 @@ static int do_grow(struct gfs2_inode *ip, uint64_t size)
 	}
 
 	ip->i_di.di_size = size;
-	ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
 
 	error = gfs2_meta_inode_buffer(ip, &dibh);
 	if (error)
 		goto out_end_trans;
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-	gfs2_dinode_out(&ip->i_di, dibh->b_data);
+	gfs2_dinode_out(ip, dibh->b_data);
 	brelse(dibh);
 
- out_end_trans:
+out_end_trans:
 	gfs2_trans_end(sdp);
-
- out_ipres:
+out_ipres:
 	gfs2_inplace_release(ip);
-
- out_gunlock_q:
+out_gunlock_q:
 	gfs2_quota_unlock(ip);
-
- out:
+out:
 	gfs2_alloc_put(ip);
-
 	return error;
 }
 
-static int trunc_start(struct gfs2_inode *ip, uint64_t size)
+
+/**
+ * gfs2_block_truncate_page - Deal with zeroing out data for truncate
+ *
+ * This is partly borrowed from ext3.
+ */
+static int gfs2_block_truncate_page(struct address_space *mapping)
+{
+	struct inode *inode = mapping->host;
+	struct gfs2_inode *ip = GFS2_I(inode);
+	struct gfs2_sbd *sdp = GFS2_SB(inode);
+	loff_t from = inode->i_size;
+	unsigned long index = from >> PAGE_CACHE_SHIFT;
+	unsigned offset = from & (PAGE_CACHE_SIZE-1);
+	unsigned blocksize, iblock, length, pos;
+	struct buffer_head *bh;
+	struct page *page;
+	int err;
+
+	page = grab_cache_page(mapping, index);
+	if (!page)
+		return 0;
+
+	blocksize = inode->i_sb->s_blocksize;
+	length = blocksize - (offset & (blocksize - 1));
+	iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
+
+	if (!page_has_buffers(page))
+		create_empty_buffers(page, blocksize, 0);
+
+	/* Find the buffer that contains "offset" */
+	bh = page_buffers(page);
+	pos = blocksize;
+	while (offset >= pos) {
+		bh = bh->b_this_page;
+		iblock++;
+		pos += blocksize;
+	}
+
+	err = 0;
+
+	if (!buffer_mapped(bh)) {
+		gfs2_get_block(inode, iblock, bh, 0);
+		/* unmapped? It's a hole - nothing to do */
+		if (!buffer_mapped(bh))
+			goto unlock;
+	}
+
+	/* Ok, it's mapped. Make sure it's up-to-date */
+	if (PageUptodate(page))
+		set_buffer_uptodate(bh);
+
+	if (!buffer_uptodate(bh)) {
+		err = -EIO;
+		ll_rw_block(READ, 1, &bh);
+		wait_on_buffer(bh);
+		/* Uhhuh. Read error. Complain and punt. */
+		if (!buffer_uptodate(bh))
+			goto unlock;
+		err = 0;
+	}
+
+	if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
+		gfs2_trans_add_bh(ip->i_gl, bh, 0);
+
+	zero_user_page(page, offset, length, KM_USER0);
+
+unlock:
+	unlock_page(page);
+	page_cache_release(page);
+	return err;
+}
+
+static int trunc_start(struct gfs2_inode *ip, u64 size)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct buffer_head *dibh;
@@ -836,7 +950,7 @@ static int trunc_start(struct gfs2_inode *ip, uint64_t size)
 	int error;
 
 	error = gfs2_trans_begin(sdp,
-				 RES_DINODE + ((journaled) ? RES_JDATA : 0), 0);
+				 RES_DINODE + (journaled ? RES_JDATA : 0), 0);
 	if (error)
 		return error;
 
@@ -846,37 +960,36 @@ static int trunc_start(struct gfs2_inode *ip, uint64_t size)
 
 	if (gfs2_is_stuffed(ip)) {
 		ip->i_di.di_size = size;
-		ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds();
+		ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
 		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-		gfs2_dinode_out(&ip->i_di, dibh->b_data);
+		gfs2_dinode_out(ip, dibh->b_data);
 		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + size);
 		error = 1;
 
 	} else {
-		if (size & (uint64_t)(sdp->sd_sb.sb_bsize - 1))
+		if (size & (u64)(sdp->sd_sb.sb_bsize - 1))
 			error = gfs2_block_truncate_page(ip->i_inode.i_mapping);
 
 		if (!error) {
 			ip->i_di.di_size = size;
-			ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds();
+			ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
 			ip->i_di.di_flags |= GFS2_DIF_TRUNC_IN_PROG;
 			gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-			gfs2_dinode_out(&ip->i_di, dibh->b_data);
+			gfs2_dinode_out(ip, dibh->b_data);
 		}
 	}
 
 	brelse(dibh);
 
- out:
+out:
 	gfs2_trans_end(sdp);
-
 	return error;
 }
 
-static int trunc_dealloc(struct gfs2_inode *ip, uint64_t size)
+static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
 {
 	unsigned int height = ip->i_di.di_height;
-	uint64_t lblock;
+	u64 lblock;
 	struct metapath mp;
 	int error;
 
@@ -904,7 +1017,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, uint64_t size)
 
 	gfs2_quota_unhold(ip);
 
- out:
+out:
 	gfs2_alloc_put(ip);
 	return error;
 }
@@ -929,21 +1042,19 @@ static int trunc_end(struct gfs2_inode *ip)
 		ip->i_di.di_height = 0;
 		ip->i_di.di_goal_meta =
 			ip->i_di.di_goal_data =
-			ip->i_num.no_addr;
+			ip->i_no_addr;
 		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
 	}
-	ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
 	ip->i_di.di_flags &= ~GFS2_DIF_TRUNC_IN_PROG;
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-	gfs2_dinode_out(&ip->i_di, dibh->b_data);
+	gfs2_dinode_out(ip, dibh->b_data);
 	brelse(dibh);
 
- out:
+out:
 	up_write(&ip->i_rw_mutex);
-
 	gfs2_trans_end(sdp);
-
 	return error;
 }
 
@@ -958,7 +1069,7 @@ static int trunc_end(struct gfs2_inode *ip)
  * Returns: errno
  */
 
-static int do_shrink(struct gfs2_inode *ip, uint64_t size)
+static int do_shrink(struct gfs2_inode *ip, u64 size)
 {
 	int error;
 
@@ -975,6 +1086,33 @@ static int do_shrink(struct gfs2_inode *ip, uint64_t size)
 	return error;
 }
 
+static int do_touch(struct gfs2_inode *ip, u64 size)
+{
+	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+	struct buffer_head *dibh;
+	int error;
+
+	error = gfs2_trans_begin(sdp, RES_DINODE, 0);
+	if (error)
+		return error;
+
+	down_write(&ip->i_rw_mutex);
+
+	error = gfs2_meta_inode_buffer(ip, &dibh);
+	if (error)
+		goto do_touch_out;
+
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
+	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+	gfs2_dinode_out(ip, dibh->b_data);
+	brelse(dibh);
+
+do_touch_out:
+	up_write(&ip->i_rw_mutex);
+	gfs2_trans_end(sdp);
+	return error;
+}
+
 /**
  * gfs2_truncatei - make a file a given size
  * @ip: the inode
@@ -986,17 +1124,20 @@ static int do_shrink(struct gfs2_inode *ip, uint64_t size)
  * Returns: errno
  */
 
-int gfs2_truncatei(struct gfs2_inode *ip, uint64_t size)
+int gfs2_truncatei(struct gfs2_inode *ip, u64 size)
 {
 	int error;
 
-	if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_di.di_mode)))
+	if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_inode.i_mode)))
 		return -EINVAL;
 
 	if (size > ip->i_di.di_size)
 		error = do_grow(ip, size);
-	else
+	else if (size < ip->i_di.di_size)
 		error = do_shrink(ip, size);
+	else
+		/* update time stamps */
+		error = do_touch(ip, size);
 
 	return error;
 }
@@ -1054,12 +1195,12 @@ void gfs2_write_calc_reserv(struct gfs2_inode *ip, unsigned int len,
  * Returns: errno
  */
 
-int gfs2_write_alloc_required(struct gfs2_inode *ip, uint64_t offset,
+int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
 			      unsigned int len, int *alloc_required)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-	uint64_t lblock, lblock_stop, dblock;
-	uint32_t extlen;
+	u64 lblock, lblock_stop, dblock;
+	u32 extlen;
 	int new = 0;
 	int error = 0;