[PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[Jani Monoses]

This turns the remaining parts of ext3 to EXT3_SB and turns the latter
from a macro to inline function which returns the generic_sbp field of u.
linux/fs.h is not touched by this patch though.
Intermezzo's three uses of ext3_sb are also not changed.
Tested.

diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/balloc.c linux-2.5/fs/ext3/balloc.c
--- linux.orig/fs/ext3/balloc.c	Sat Jul 27 02:58:27 2002
+++ linux-2.5/fs/ext3/balloc.c	Fri Aug 30 00:00:50 2002
@@ -46,18 +46,18 @@
 	unsigned long desc;
 	struct ext3_group_desc * gdp;
 
-	if (block_group >= sb->u.ext3_sb.s_groups_count) {
+	if (block_group >= EXT3_SB(sb)->s_groups_count) {
 		ext3_error (sb, "ext3_get_group_desc",
 			    "block_group >= groups_count - "
 			    "block_group = %d, groups_count = %lu",
-			    block_group, sb->u.ext3_sb.s_groups_count);
+			    block_group, EXT3_SB(sb)->s_groups_count);
 
 		return NULL;
 	}
 	
 	group_desc = block_group / EXT3_DESC_PER_BLOCK(sb);
 	desc = block_group % EXT3_DESC_PER_BLOCK(sb);
-	if (!sb->u.ext3_sb.s_group_desc[group_desc]) {
+	if (!EXT3_SB(sb)->s_group_desc[group_desc]) {
 		ext3_error (sb, "ext3_get_group_desc",
 			    "Group descriptor not loaded - "
 			    "block_group = %d, group_desc = %lu, desc = %lu",
@@ -66,9 +66,9 @@
 	}
 	
 	gdp = (struct ext3_group_desc *) 
-	      sb->u.ext3_sb.s_group_desc[group_desc]->b_data;
+	      EXT3_SB(sb)->s_group_desc[group_desc]->b_data;
 	if (bh)
-		*bh = sb->u.ext3_sb.s_group_desc[group_desc];
+		*bh = EXT3_SB(sb)->s_group_desc[group_desc];
 	return gdp + desc;
 }
 
@@ -119,7 +119,7 @@
 		return;
 	}
 	lock_super (sb);
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	if (block < le32_to_cpu(es->s_first_data_block) || 
 	    (block + count) > le32_to_cpu(es->s_blocks_count)) {
 		ext3_error (sb, "ext3_free_blocks",
@@ -155,9 +155,9 @@
 	if (in_range (le32_to_cpu(gdp->bg_block_bitmap), block, count) ||
 	    in_range (le32_to_cpu(gdp->bg_inode_bitmap), block, count) ||
 	    in_range (block, le32_to_cpu(gdp->bg_inode_table),
-		      sb->u.ext3_sb.s_itb_per_group) ||
+		      EXT3_SB(sb)->s_itb_per_group) ||
 	    in_range (block + count - 1, le32_to_cpu(gdp->bg_inode_table),
-		      sb->u.ext3_sb.s_itb_per_group))
+		      EXT3_SB(sb)->s_itb_per_group))
 		ext3_error (sb, "ext3_free_blocks",
 			    "Freeing blocks in system zones - "
 			    "Block = %lu, count = %lu",
@@ -183,8 +183,8 @@
 	if (err)
 		goto error_return;
 
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "get_write_access");
-	err = ext3_journal_get_write_access(handle, sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "get_write_access");
+	err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
 	if (err)
 		goto error_return;
 
@@ -253,8 +253,8 @@
 	if (!err) err = ret;
 
 	/* And the superblock */
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "dirtied superblock");
-	ret = ext3_journal_dirty_metadata(handle, sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "dirtied superblock");
+	ret = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
 	if (!err) err = ret;
 
 	if (overflow && !err) {
@@ -408,12 +408,12 @@
 	}
 
 	lock_super(sb);
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	if (le32_to_cpu(es->s_free_blocks_count) <=
 			le32_to_cpu(es->s_r_blocks_count) &&
-	    ((sb->u.ext3_sb.s_resuid != current->fsuid) &&
-	     (sb->u.ext3_sb.s_resgid == 0 ||
-	      !in_group_p(sb->u.ext3_sb.s_resgid)) && 
+	    ((EXT3_SB(sb)->s_resuid != current->fsuid) &&
+	     (EXT3_SB(sb)->s_resgid == 0 ||
+	      !in_group_p(EXT3_SB(sb)->s_resgid)) && 
 	     !capable(CAP_SYS_RESOURCE)))
 		goto out;
 
@@ -464,9 +464,9 @@
 	 * Now search the rest of the groups.  We assume that 
 	 * i and gdp correctly point to the last group visited.
 	 */
-	for (bit = 0; bit < sb->u.ext3_sb.s_groups_count; bit++) {
+	for (bit = 0; bit < EXT3_SB(sb)->s_groups_count; bit++) {
 		group_no++;
-		if (group_no >= sb->u.ext3_sb.s_groups_count)
+		if (group_no >= EXT3_SB(sb)->s_groups_count)
 			group_no = 0;
 		gdp = ext3_get_group_desc(sb, group_no, &gdp_bh);
 		if (!gdp) {
@@ -518,8 +518,8 @@
 	if (fatal)
 		goto out;
 
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "get_write_access");
-	fatal = ext3_journal_get_write_access(handle, sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "get_write_access");
+	fatal = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
 	if (fatal)
 		goto out;
 
@@ -529,7 +529,7 @@
 	if (target_block == le32_to_cpu(gdp->bg_block_bitmap) ||
 	    target_block == le32_to_cpu(gdp->bg_inode_bitmap) ||
 	    in_range(target_block, le32_to_cpu(gdp->bg_inode_table),
-		      sb->u.ext3_sb.s_itb_per_group))
+		      EXT3_SB(sb)->s_itb_per_group))
 		ext3_error(sb, "ext3_new_block",
 			    "Allocating block in system zone - "
 			    "block = %u", target_block);
@@ -594,9 +594,9 @@
 	if (!fatal)
 		fatal = err;
 
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh,
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh,
 			"journal_dirty_metadata for superblock");
-	err = ext3_journal_dirty_metadata(handle, sb->u.ext3_sb.s_sbh);
+	err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
 	if (!fatal)
 		fatal = err;
 
@@ -637,11 +637,11 @@
 	int i;
 	
 	lock_super(sb);
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	desc_count = 0;
 	bitmap_count = 0;
 	gdp = NULL;
-	for (i = 0; i < sb->u.ext3_sb.s_groups_count; i++) {
+	for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
 		gdp = ext3_get_group_desc(sb, i, NULL);
 		if (!gdp)
 			continue;
@@ -662,7 +662,7 @@
 	unlock_super(sb);
 	return bitmap_count;
 #else
-	return le32_to_cpu(sb->u.ext3_sb.s_es->s_free_blocks_count);
+	return le32_to_cpu(EXT3_SB(sb)->s_es->s_free_blocks_count);
 #endif
 }
 
@@ -671,7 +671,7 @@
 				unsigned char * map)
 {
 	return ext3_test_bit ((block -
-		le32_to_cpu(sb->u.ext3_sb.s_es->s_first_data_block)) %
+		le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block)) %
 			 EXT3_BLOCKS_PER_GROUP(sb), map);
 }
 
@@ -738,11 +738,11 @@
 	struct ext3_group_desc *gdp;
 	int i;
 
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	desc_count = 0;
 	bitmap_count = 0;
 	gdp = NULL;
-	for (i = 0; i < sb->u.ext3_sb.s_groups_count; i++) {
+	for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
 		gdp = ext3_get_group_desc (sb, i, NULL);
 		if (!gdp)
 			continue;
@@ -776,7 +776,7 @@
 				    "Inode bitmap for group %d is marked free",
 				    i);
 
-		for (j = 0; j < sb->u.ext3_sb.s_itb_per_group; j++)
+		for (j = 0; j < EXT3_SB(sb)->s_itb_per_group; j++)
 			if (!block_in_use (le32_to_cpu(gdp->bg_inode_table) + j,
 							sb, bitmap_bh->b_data))
 				ext3_error (sb, "ext3_check_blocks_bitmap",
diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/dir.c linux-2.5/fs/ext3/dir.c
--- linux.orig/fs/ext3/dir.c	Mon Aug 19 14:15:39 2002
+++ linux-2.5/fs/ext3/dir.c	Fri Aug 30 01:13:42 2002
@@ -54,7 +54,7 @@
 	else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
 		error_msg = "directory entry across blocks";
 	else if (le32_to_cpu(de->inode) >
-			le32_to_cpu(dir->i_sb->u.ext3_sb.s_es->s_inodes_count))
+			le32_to_cpu(EXT3_SB(dir->i_sb)->s_es->s_inodes_count))
 		error_msg = "inode out of bounds";
 
 	if (error_msg != NULL)
diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/ialloc.c linux-2.5/fs/ext3/ialloc.c
--- linux.orig/fs/ext3/ialloc.c	Sat Jul 27 02:58:38 2002
+++ linux-2.5/fs/ext3/ialloc.c	Fri Aug 30 00:03:25 2002
@@ -127,7 +127,7 @@
 	clear_inode (inode);
 
 	lock_super (sb);
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	if (ino < EXT3_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
 		ext3_error (sb, "ext3_free_inode",
 			    "reserved or nonexistent inode %lu", ino);
@@ -155,8 +155,8 @@
 		fatal = ext3_journal_get_write_access(handle, bh2);
 		if (fatal) goto error_return;
 
-		BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "get write access");
-		fatal = ext3_journal_get_write_access(handle, sb->u.ext3_sb.s_sbh);
+		BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "get write access");
+		fatal = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
 		if (fatal) goto error_return;
 
 		if (gdp) {
@@ -171,9 +171,9 @@
 		if (!fatal) fatal = err;
 		es->s_free_inodes_count =
 			cpu_to_le32(le32_to_cpu(es->s_free_inodes_count) + 1);
-		BUFFER_TRACE(sb->u.ext3_sb.s_sbh,
+		BUFFER_TRACE(EXT3_SB(sb)->s_sbh,
 					"call ext3_journal_dirty_metadata");
-		err = ext3_journal_dirty_metadata(handle, sb->u.ext3_sb.s_sbh);
+		err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
 		if (!fatal) fatal = err;
 	}
 	BUFFER_TRACE(bitmap_bh, "call ext3_journal_dirty_metadata");
@@ -222,16 +222,16 @@
 	ei = EXT3_I(inode);
 
 	lock_super (sb);
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 repeat:
 	gdp = NULL;
 	i = 0;
 
 	if (S_ISDIR(mode)) {
 		avefreei = le32_to_cpu(es->s_free_inodes_count) /
-			sb->u.ext3_sb.s_groups_count;
+			EXT3_SB(sb)->s_groups_count;
 		if (!gdp) {
-			for (j = 0; j < sb->u.ext3_sb.s_groups_count; j++) {
+			for (j = 0; j < EXT3_SB(sb)->s_groups_count; j++) {
 				struct buffer_head *temp_buffer;
 				tmp = ext3_get_group_desc (sb, j, &temp_buffer);
 				if (tmp &&
@@ -261,10 +261,10 @@
 			 * Use a quadratic hash to find a group with a
 			 * free inode
 			 */
-			for (j = 1; j < sb->u.ext3_sb.s_groups_count; j <<= 1) {
+			for (j = 1; j < EXT3_SB(sb)->s_groups_count; j <<= 1) {
 				i += j;
-				if (i >= sb->u.ext3_sb.s_groups_count)
-					i -= sb->u.ext3_sb.s_groups_count;
+				if (i >= EXT3_SB(sb)->s_groups_count)
+					i -= EXT3_SB(sb)->s_groups_count;
 				tmp = ext3_get_group_desc (sb, i, &bh2);
 				if (tmp &&
 				    le16_to_cpu(tmp->bg_free_inodes_count)) {
@@ -278,8 +278,8 @@
 			 * That failed: try linear search for a free inode
 			 */
 			i = EXT3_I(dir)->i_block_group + 1;
-			for (j = 2; j < sb->u.ext3_sb.s_groups_count; j++) {
-				if (++i >= sb->u.ext3_sb.s_groups_count)
+			for (j = 2; j < EXT3_SB(sb)->s_groups_count; j++) {
+				if (++i >= EXT3_SB(sb)->s_groups_count)
 					i = 0;
 				tmp = ext3_get_group_desc (sb, i, &bh2);
 				if (tmp &&
@@ -357,13 +357,13 @@
 	err = ext3_journal_dirty_metadata(handle, bh2);
 	if (err) goto fail;
 	
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "get_write_access");
-	err = ext3_journal_get_write_access(handle, sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "get_write_access");
+	err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
 	if (err) goto fail;
 	es->s_free_inodes_count =
 		cpu_to_le32(le32_to_cpu(es->s_free_inodes_count) - 1);
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "call ext3_journal_dirty_metadata");
-	err = ext3_journal_dirty_metadata(handle, sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "call ext3_journal_dirty_metadata");
+	err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
 	sb->s_dirt = 1;
 	if (err) goto fail;
 
@@ -417,7 +417,7 @@
 	if (IS_DIRSYNC(inode))
 		handle->h_sync = 1;
 	insert_inode_hash(inode);
-	inode->i_generation = sb->u.ext3_sb.s_next_generation++;
+	inode->i_generation = EXT3_SB(sb)->s_next_generation++;
 
 	ei->i_state = EXT3_STATE_NEW;
 	err = ext3_mark_inode_dirty(handle, inode);
@@ -512,11 +512,11 @@
 	int i;
 
 	lock_super (sb);
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	desc_count = 0;
 	bitmap_count = 0;
 	gdp = NULL;
-	for (i = 0; i < sb->u.ext3_sb.s_groups_count; i++) {
+	for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
 		gdp = ext3_get_group_desc (sb, i, NULL);
 		if (!gdp)
 			continue;
@@ -537,7 +537,7 @@
 	unlock_super(sb);
 	return desc_count;
 #else
-	return le32_to_cpu(sb->u.ext3_sb.s_es->s_free_inodes_count);
+	return le32_to_cpu(EXT3_SB(sb)->s_es->s_free_inodes_count);
 #endif
 }
 
@@ -551,11 +551,11 @@
 	struct ext3_group_desc * gdp;
 	int i;
 
-	es = sb->u.ext3_sb.s_es;
+	es = EXT3_SB(sb)->s_es;
 	desc_count = 0;
 	bitmap_count = 0;
 	gdp = NULL;
-	for (i = 0; i < sb->u.ext3_sb.s_groups_count; i++) {
+	for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
 		gdp = ext3_get_group_desc (sb, i, NULL);
 		if (!gdp)
 			continue;
diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/inode.c linux-2.5/fs/ext3/inode.c
--- linux.orig/fs/ext3/inode.c	Mon Aug 19 14:15:39 2002
+++ linux-2.5/fs/ext3/inode.c	Fri Aug 30 01:13:20 2002
@@ -471,7 +471,7 @@
 	 * the same cylinder group then.
 	 */
 	return (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
-	       le32_to_cpu(inode->i_sb->u.ext3_sb.s_es->s_first_data_block);
+	       le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
 }
 
 /**
@@ -2055,20 +2055,20 @@
 		inode->i_ino != EXT3_JOURNAL_INO &&
 		inode->i_ino < EXT3_FIRST_INO(inode->i_sb)) ||
 		inode->i_ino > le32_to_cpu(
-			inode->i_sb->u.ext3_sb.s_es->s_inodes_count)) {
+			EXT3_SB(inode->i_sb)->s_es->s_inodes_count)) {
 		ext3_error (inode->i_sb, "ext3_get_inode_loc",
 			    "bad inode number: %lu", inode->i_ino);
 		goto bad_inode;
 	}
 	block_group = (inode->i_ino - 1) / EXT3_INODES_PER_GROUP(inode->i_sb);
-	if (block_group >= inode->i_sb->u.ext3_sb.s_groups_count) {
+	if (block_group >= EXT3_SB(inode->i_sb)->s_groups_count) {
 		ext3_error (inode->i_sb, "ext3_get_inode_loc",
 			    "group >= groups count");
 		goto bad_inode;
 	}
 	group_desc = block_group >> EXT3_DESC_PER_BLOCK_BITS(inode->i_sb);
 	desc = block_group & (EXT3_DESC_PER_BLOCK(inode->i_sb) - 1);
-	bh = inode->i_sb->u.ext3_sb.s_group_desc[group_desc];
+	bh = EXT3_SB(inode->i_sb)->s_group_desc[group_desc];
 	if (!bh) {
 		ext3_error (inode->i_sb, "ext3_get_inode_loc",
 			    "Descriptor not loaded");
@@ -2138,7 +2138,7 @@
 	 */
 	if (inode->i_nlink == 0) {
 		if (inode->i_mode == 0 ||
-		    !(inode->i_sb->u.ext3_sb.s_mount_state & EXT3_ORPHAN_FS)) {
+		    !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ORPHAN_FS)) {
 			/* this inode is deleted */
 			brelse (bh);
 			goto bad_inode;
@@ -2308,7 +2308,7 @@
 				* created, add a flag to the superblock.
 				*/
 				err = ext3_journal_get_write_access(handle,
-						sb->u.ext3_sb.s_sbh);
+						EXT3_SB(sb)->s_sbh);
 				if (err)
 					goto out_brelse;
 				ext3_update_dynamic_rev(sb);
@@ -2317,7 +2317,7 @@
 				sb->s_dirt = 1;
 				handle->h_sync = 1;
 				err = ext3_journal_dirty_metadata(handle,
-						sb->u.ext3_sb.s_sbh);
+						EXT3_SB(sb)->s_sbh);
 			}
 		}
 	}
diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/ioctl.c linux-2.5/fs/ext3/ioctl.c
--- linux.orig/fs/ext3/ioctl.c	Sat Jul 27 02:58:36 2002
+++ linux-2.5/fs/ext3/ioctl.c	Fri Aug 30 00:08:16 2002
@@ -159,12 +159,12 @@
 			int ret = 0;
 
 			set_current_state(TASK_INTERRUPTIBLE);
-			add_wait_queue(&sb->u.ext3_sb.ro_wait_queue, &wait);
-			if (timer_pending(&sb->u.ext3_sb.turn_ro_timer)) {
+			add_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
+			if (timer_pending(&EXT3_SB(sb)->turn_ro_timer)) {
 				schedule();
 				ret = 1;
 			}
-			remove_wait_queue(&sb->u.ext3_sb.ro_wait_queue, &wait);
+			remove_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
 			return ret;
 		}
 #endif
diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/namei.c linux-2.5/fs/ext3/namei.c
--- linux.orig/fs/ext3/namei.c	Mon Aug 19 14:15:39 2002
+++ linux-2.5/fs/ext3/namei.c	Fri Aug 30 00:09:51 2002
@@ -729,8 +729,8 @@
 	J_ASSERT ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
 		S_ISLNK(inode->i_mode)) || inode->i_nlink == 0);
 
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "get_write_access");
-	err = ext3_journal_get_write_access(handle, sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "get_write_access");
+	err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
 	if (err)
 		goto out_unlock;
 	
@@ -741,7 +741,7 @@
 	/* Insert this inode at the head of the on-disk orphan list... */
 	NEXT_ORPHAN(inode) = le32_to_cpu(EXT3_SB(sb)->s_es->s_last_orphan);
 	EXT3_SB(sb)->s_es->s_last_orphan = cpu_to_le32(inode->i_ino);
-	err = ext3_journal_dirty_metadata(handle, sb->u.ext3_sb.s_sbh);
+	err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
 	rc = ext3_mark_iloc_dirty(handle, inode, &iloc);
 	if (!err)
 		err = rc;
diff -X /home/jani/dontdiff -ur linux.orig/fs/ext3/super.c linux-2.5/fs/ext3/super.c
--- linux.orig/fs/ext3/super.c	Mon Aug 19 14:15:53 2002
+++ linux-2.5/fs/ext3/super.c	Fri Aug 30 10:39:37 2002
@@ -120,7 +120,7 @@
 	/* If no overrides were specified on the mount, then fall back
 	 * to the default behaviour set in the filesystem's superblock
 	 * on disk. */
-	switch (le16_to_cpu(sb->u.ext3_sb.s_es->s_errors)) {
+	switch (le16_to_cpu(EXT3_SB(sb)->s_es->s_errors)) {
 	case EXT3_ERRORS_PANIC:
 		return EXT3_ERRORS_PANIC;
 	case EXT3_ERRORS_RO:
@@ -268,9 +268,9 @@
 		return;
 	
 	printk (KERN_CRIT "Remounting filesystem read-only\n");
-	sb->u.ext3_sb.s_mount_state |= EXT3_ERROR_FS;
+	EXT3_SB(sb)->s_mount_state |= EXT3_ERROR_FS;
 	sb->s_flags |= MS_RDONLY;
-	sb->u.ext3_sb.s_mount_opt |= EXT3_MOUNT_ABORT;
+	EXT3_SB(sb)->s_mount_opt |= EXT3_MOUNT_ABORT;
 	journal_abort(EXT3_SB(sb)->s_journal, -EIO);
 }
 
@@ -439,7 +439,8 @@
 		ext3_blkdev_remove(sbi);
 	}
 	clear_ro_after(sb);
-
+	sb->u.generic_sbp = NULL;
+	kfree(sbi);
 	return;
 }
 
@@ -873,7 +874,7 @@
 		sb->s_flags &= ~MS_RDONLY;
 	}
 
-	if (sb->u.ext3_sb.s_mount_state & EXT3_ERROR_FS) {
+	if (EXT3_SB(sb)->s_mount_state & EXT3_ERROR_FS) {
 		if (es->s_last_orphan)
 			jbd_debug(1, "Errors on filesystem, "
 				  "clearing orphan list.\n");
@@ -945,7 +946,7 @@
 {
 	struct buffer_head * bh;
 	struct ext3_super_block *es = 0;
-	struct ext3_sb_info *sbi = EXT3_SB(sb);
+	struct ext3_sb_info *sbi;
 	unsigned long sb_block = 1;
 	unsigned long logic_sb_block = 1;
 	unsigned long offset = 0;
@@ -966,7 +967,11 @@
 	 * This is important for devices that have a hardware
 	 * sectorsize that is larger than the default.
 	 */
-
+	sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
+	if (!sbi)
+		return -ENOMEM;
+	sb->u.generic_sbp = sbi;
+	memset(sbi, 0, sizeof(*sbi));
 	sbi->s_mount_opt = 0;
 	sbi->s_resuid = EXT3_DEF_RESUID;
 	sbi->s_resgid = EXT3_DEF_RESGID;
@@ -1262,6 +1267,8 @@
 	ext3_blkdev_remove(sbi);
 	brelse(bh);
 out_fail:
+	sb->u.generic_sbp = NULL;
+	kfree(sbi);
 	return -EINVAL;
 }
 
@@ -1516,11 +1523,11 @@
 			       int sync)
 {
 	es->s_wtime = cpu_to_le32(CURRENT_TIME);
-	BUFFER_TRACE(sb->u.ext3_sb.s_sbh, "marking dirty");
-	mark_buffer_dirty(sb->u.ext3_sb.s_sbh);
+	BUFFER_TRACE(EXT3_SB(sb)->s_sbh, "marking dirty");
+	mark_buffer_dirty(EXT3_SB(sb)->s_sbh);
 	if (sync) {
-		ll_rw_block(WRITE, 1, &sb->u.ext3_sb.s_sbh);
-		wait_on_buffer(sb->u.ext3_sb.s_sbh);
+		ll_rw_block(WRITE, 1, &EXT3_SB(sb)->s_sbh);
+		wait_on_buffer(EXT3_SB(sb)->s_sbh);
 	}
 }
 
@@ -1571,7 +1578,7 @@
 		ext3_warning(sb, __FUNCTION__, "Marking fs in need of "
 			     "filesystem check.");
 		
-		sb->u.ext3_sb.s_mount_state |= EXT3_ERROR_FS;
+		EXT3_SB(sb)->s_mount_state |= EXT3_ERROR_FS;
 		es->s_state |= cpu_to_le16(EXT3_ERROR_FS);
 		ext3_commit_super (sb, es, 1);
 
diff -X /home/jani/dontdiff -ur linux.orig/include/linux/ext3_fs.h linux-2.5/include/linux/ext3_fs.h
--- linux.orig/include/linux/ext3_fs.h	Sat Jul 27 02:58:26 2002
+++ linux-2.5/include/linux/ext3_fs.h	Fri Aug 30 10:21:58 2002
@@ -97,9 +97,9 @@
 # define EXT3_BLOCK_SIZE_BITS(s)	((s)->s_log_block_size + 10)
 #endif
 #ifdef __KERNEL__
-#define	EXT3_ADDR_PER_BLOCK_BITS(s)	((s)->u.ext3_sb.s_addr_per_block_bits)
-#define EXT3_INODE_SIZE(s)		((s)->u.ext3_sb.s_inode_size)
-#define EXT3_FIRST_INO(s)		((s)->u.ext3_sb.s_first_ino)
+#define	EXT3_ADDR_PER_BLOCK_BITS(s)	(EXT3_SB(s)->s_addr_per_block_bits)
+#define EXT3_INODE_SIZE(s)		(EXT3_SB(s)->s_inode_size)
+#define EXT3_FIRST_INO(s)		(EXT3_SB(s)->s_first_ino)
 #else
 #define EXT3_INODE_SIZE(s)	(((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
 				 EXT3_GOOD_OLD_INODE_SIZE : \
@@ -116,8 +116,8 @@
 #define	EXT3_MAX_FRAG_SIZE		4096
 #define EXT3_MIN_FRAG_LOG_SIZE		  10
 #ifdef __KERNEL__
-# define EXT3_FRAG_SIZE(s)		((s)->u.ext3_sb.s_frag_size)
-# define EXT3_FRAGS_PER_BLOCK(s)	((s)->u.ext3_sb.s_frags_per_block)
+# define EXT3_FRAG_SIZE(s)		(EXT3_SB(s)->s_frag_size)
+# define EXT3_FRAGS_PER_BLOCK(s)	(EXT3_SB(s)->s_frags_per_block)
 #else
 # define EXT3_FRAG_SIZE(s)		(EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size)
 # define EXT3_FRAGS_PER_BLOCK(s)	(EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s))
@@ -164,10 +164,10 @@
  * Macro-instructions used to manage group descriptors
  */
 #ifdef __KERNEL__
-# define EXT3_BLOCKS_PER_GROUP(s)	((s)->u.ext3_sb.s_blocks_per_group)
-# define EXT3_DESC_PER_BLOCK(s)		((s)->u.ext3_sb.s_desc_per_block)
-# define EXT3_INODES_PER_GROUP(s)	((s)->u.ext3_sb.s_inodes_per_group)
-# define EXT3_DESC_PER_BLOCK_BITS(s)	((s)->u.ext3_sb.s_desc_per_block_bits)
+# define EXT3_BLOCKS_PER_GROUP(s)	(EXT3_SB(s)->s_blocks_per_group)
+# define EXT3_DESC_PER_BLOCK(s)		(EXT3_SB(s)->s_desc_per_block)
+# define EXT3_INODES_PER_GROUP(s)	(EXT3_SB(s)->s_inodes_per_group)
+# define EXT3_DESC_PER_BLOCK_BITS(s)	(EXT3_SB(s)->s_desc_per_block_bits)
 #else
 # define EXT3_BLOCKS_PER_GROUP(s)	((s)->s_blocks_per_group)
 # define EXT3_DESC_PER_BLOCK(s)		(EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc))
@@ -346,7 +346,7 @@
 #ifndef _LINUX_EXT2_FS_H
 #define clear_opt(o, opt)		o &= ~EXT3_MOUNT_##opt
 #define set_opt(o, opt)			o |= EXT3_MOUNT_##opt
-#define test_opt(sb, opt)		((sb)->u.ext3_sb.s_mount_opt & \
+#define test_opt(sb, opt)		(EXT3_SB(sb)->s_mount_opt & \
 					 EXT3_MOUNT_##opt)
 #else
 #define EXT2_MOUNT_NOLOAD		EXT3_MOUNT_NOLOAD
@@ -444,7 +444,10 @@
 };
 
 #ifdef __KERNEL__
-#define EXT3_SB(sb)	(&((sb)->u.ext3_sb))
+static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
+{
+	return sb->u.generic_sbp;
+}
 static inline struct ext3_inode_info *EXT3_I(struct inode *inode)
 {
 	return container_of(inode, struct ext3_inode_info, vfs_inode);

Re: [PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[Andrew Morton]

Jani Monoses wrote:
> 
> This turns the remaining parts of ext3 to EXT3_SB and turns the latter
> from a macro to inline function which returns the generic_sbp field of u.

Thanks.

It's not going to make the merge of all Stephen's 2.4 changes
any more fun though ;)

Re: [PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[Andreas Dilger]

On Aug 30, 2002  12:03 -0700, Andrew Morton wrote:
> Jani Monoses wrote:
> > 
> > This turns the remaining parts of ext3 to EXT3_SB and turns the latter
> > from a macro to inline function which returns the generic_sbp field of u.
> 
> Thanks.
> 
> It's not going to make the merge of all Stephen's 2.4 changes
> any more fun though ;)

It would probably be good if we did the back-port of the EXT3_SB and
EXT3_I changes to 2.4 to keep them in sync.

Cheers, Andreas
--
Andreas Dilger
http://www-mddsp.enel.ucalgary.ca/People/adilger/
http://sourceforge.net/projects/ext2resize/

Re: [PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[Dave Jones]

On Fri, Aug 30, 2002 at 12:03:20PM -0700, Andrew Morton wrote:
 > > This turns the remaining parts of ext3 to EXT3_SB and turns the latter
 > > from a macro to inline function which returns the generic_sbp field of u.
 > Thanks.
 > It's not going to make the merge of all Stephen's 2.4 changes
 > any more fun though ;)

The last 2.5-dj I did should be in sync as of ext3 in 2.4.19,
but lacks the bits sct came up with recently for 2.4.20pre.[1]
(Also 1-2 other janitor type things there too, I'll push some
fs stuff to various people soon).

        Dave

[1] For the curious, I'm not syncing 2.4.20pre's, I'll wait until
    .20 final, and do a big resync for 2.5.x-dj.

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs

Re: [PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[Stephen C. Tweedie]

Hi,

On Sat, Aug 31, 2002 at 06:13:38PM +0200, Dave Jones wrote:
> On Fri, Aug 30, 2002 at 12:03:20PM -0700, Andrew Morton wrote:
>  > > This turns the remaining parts of ext3 to EXT3_SB and turns the latter
>  > > from a macro to inline function which returns the generic_sbp field of u.
>  > Thanks.
>  > It's not going to make the merge of all Stephen's 2.4 changes
>  > any more fun though ;)
> 
> The last 2.5-dj I did should be in sync as of ext3 in 2.4.19,
> but lacks the bits sct came up with recently for 2.4.20pre.[1]

I think akpm's been grabbing the most important bits of that anyway.

--Stephen

Re: [PATCH] 2.5.32 : u.ext3_sb -> generic_sbp

[Stephen C. Tweedie]

Hi,

On Fri, Aug 30, 2002 at 12:03:20PM -0700, Andrew Morton wrote:

> > This turns the remaining parts of ext3 to EXT3_SB and turns the latter
> > from a macro to inline function which returns the generic_sbp field of u.
 
> It's not going to make the merge of all Stephen's 2.4 changes
> any more fun though ;)

For the major new changes in ext3, I think I'll end up bringing back a
lot of the 2.5 changes into a 2.4 branch.  Beyond a certain point,
though, I'll probably have to start basing new ext3 work on 2.5 ---
the BKL mitigation, in particular, is going to depend on the locking
regime which is substantially different in 2.5.  

My current codebase should help BKL in both 2.4 and 2.5 simply because
it substantially reduces the amount of work we're doing in the core,
without actually changing the locking, but eliminating BKL entirely in
larger chunks of the code will have to be the next stage.

--Stephen