1 files changed, 47 insertions, 114 deletions

diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index e2d6208633a..7d66fb0e4cc 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -12,7 +12,6 @@
  *        David S. Miller (davem@caip.rutgers.edu), 1995
  */
 
-#include <linux/config.h>
 #include <linux/quotaops.h>
 #include <linux/sched.h>
 #include <linux/backing-dev.h>
@@ -76,15 +75,12 @@ static void ext2_release_inode(struct super_block *sb, int group, int dir)
 	}
 
 	spin_lock(sb_bgl_lock(EXT2_SB(sb), group));
-	desc->bg_free_inodes_count =
-		cpu_to_le16(le16_to_cpu(desc->bg_free_inodes_count) + 1);
+	le16_add_cpu(&desc->bg_free_inodes_count, 1);
 	if (dir)
-		desc->bg_used_dirs_count =
-			cpu_to_le16(le16_to_cpu(desc->bg_used_dirs_count) - 1);
+		le16_add_cpu(&desc->bg_used_dirs_count, -1);
 	spin_unlock(sb_bgl_lock(EXT2_SB(sb), group));
 	if (dir)
 		percpu_counter_dec(&EXT2_SB(sb)->s_dirs_counter);
-	sb->s_dirt = 1;
 	mark_buffer_dirty(bh);
 }
 
@@ -109,7 +105,7 @@ void ext2_free_inode (struct inode * inode)
 	struct super_block * sb = inode->i_sb;
 	int is_directory;
 	unsigned long ino;
-	struct buffer_head *bitmap_bh = NULL;
+	struct buffer_head *bitmap_bh;
 	unsigned long block_group;
 	unsigned long bit;
 	struct ext2_super_block * es;
@@ -121,31 +117,24 @@ void ext2_free_inode (struct inode * inode)
 	 * Note: we must free any quota before locking the superblock,
 	 * as writing the quota to disk may need the lock as well.
 	 */
-	if (!is_bad_inode(inode)) {
-		/* Quota is already initialized in iput() */
-		ext2_xattr_delete_inode(inode);
-	    	DQUOT_FREE_INODE(inode);
-		DQUOT_DROP(inode);
-	}
+	/* Quota is already initialized in iput() */
+	dquot_free_inode(inode);
+	dquot_drop(inode);
 
 	es = EXT2_SB(sb)->s_es;
 	is_directory = S_ISDIR(inode->i_mode);
 
-	/* Do this BEFORE marking the inode not in use or returning an error */
-	clear_inode (inode);
-
 	if (ino < EXT2_FIRST_INO(sb) ||
 	    ino > le32_to_cpu(es->s_inodes_count)) {
 		ext2_error (sb, "ext2_free_inode",
 			    "reserved or nonexistent inode %lu", ino);
-		goto error_return;
+		return;
 	}
 	block_group = (ino - 1) / EXT2_INODES_PER_GROUP(sb);
 	bit = (ino - 1) % EXT2_INODES_PER_GROUP(sb);
-	brelse(bitmap_bh);
 	bitmap_bh = read_inode_bitmap(sb, block_group);
 	if (!bitmap_bh)
-		goto error_return;
+		return;
 
 	/* Ok, now we can actually update the inode bitmaps.. */
 	if (!ext2_clear_bit_atomic(sb_bgl_lock(EXT2_SB(sb), block_group),
@@ -157,7 +146,7 @@ void ext2_free_inode (struct inode * inode)
 	mark_buffer_dirty(bitmap_bh);
 	if (sb->s_flags & MS_SYNCHRONOUS)
 		sync_dirty_buffer(bitmap_bh);
-error_return:
+
 	brelse(bitmap_bh);
 }
 
@@ -178,7 +167,6 @@ static void ext2_preread_inode(struct inode *inode)
 	unsigned long block_group;
 	unsigned long offset;
 	unsigned long block;
-	struct buffer_head *bh;
 	struct ext2_group_desc * gdp;
 	struct backing_dev_info *bdi;
 
@@ -189,7 +177,7 @@ static void ext2_preread_inode(struct inode *inode)
 		return;
 
 	block_group = (inode->i_ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb);
-	gdp = ext2_get_group_desc(inode->i_sb, block_group, &bh);
+	gdp = ext2_get_group_desc(inode->i_sb, block_group, NULL);
 	if (gdp == NULL)
 		return;
 
@@ -218,11 +206,10 @@ static int find_group_dir(struct super_block *sb, struct inode *parent)
 	int ngroups = EXT2_SB(sb)->s_groups_count;
 	int avefreei = ext2_count_free_inodes(sb) / ngroups;
 	struct ext2_group_desc *desc, *best_desc = NULL;
-	struct buffer_head *bh, *best_bh = NULL;
 	int group, best_group = -1;
 
 	for (group = 0; group < ngroups; group++) {
-		desc = ext2_get_group_desc (sb, group, &bh);
+		desc = ext2_get_group_desc (sb, group, NULL);
 		if (!desc || !desc->bg_free_inodes_count)
 			continue;
 		if (le16_to_cpu(desc->bg_free_inodes_count) < avefreei)
@@ -232,7 +219,6 @@ static int find_group_dir(struct super_block *sb, struct inode *parent)
 		     le16_to_cpu(best_desc->bg_free_blocks_count))) {
 			best_group = group;
 			best_desc = desc;
-			best_bh = bh;
 		}
 	}
 	if (!best_desc)
@@ -257,7 +243,7 @@ static int find_group_dir(struct super_block *sb, struct inode *parent)
  * it has too few free inodes left (min_inodes) or 
  * it has too few free blocks left (min_blocks) or 
  * it's already running too large debt (max_debt). 
- * Parent's group is prefered, if it doesn't satisfy these 
+ * Parent's group is preferred, if it doesn't satisfy these 
  * conditions we search cyclically through the rest. If none 
  * of the groups look good we just look for a group with more 
  * free inodes than average (starting at parent's group). 
@@ -285,7 +271,6 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
 	int max_debt, max_dirs, min_blocks, min_inodes;
 	int group = -1, i;
 	struct ext2_group_desc *desc;
-	struct buffer_head *bh;
 
 	freei = percpu_counter_read_positive(&sbi->s_freeinodes_counter);
 	avefreei = freei / ngroups;
@@ -296,15 +281,14 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
 	if ((parent == sb->s_root->d_inode) ||
 	    (EXT2_I(parent)->i_flags & EXT2_TOPDIR_FL)) {
 		struct ext2_group_desc *best_desc = NULL;
-		struct buffer_head *best_bh = NULL;
 		int best_ndir = inodes_per_group;
 		int best_group = -1;
 
-		get_random_bytes(&group, sizeof(group));
+		group = prandom_u32();
 		parent_group = (unsigned)group % ngroups;
 		for (i = 0; i < ngroups; i++) {
 			group = (parent_group + i) % ngroups;
-			desc = ext2_get_group_desc (sb, group, &bh);
+			desc = ext2_get_group_desc (sb, group, NULL);
 			if (!desc || !desc->bg_free_inodes_count)
 				continue;
 			if (le16_to_cpu(desc->bg_used_dirs_count) >= best_ndir)
@@ -316,11 +300,9 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
 			best_group = group;
 			best_ndir = le16_to_cpu(desc->bg_used_dirs_count);
 			best_desc = desc;
-			best_bh = bh;
 		}
 		if (best_group >= 0) {
 			desc = best_desc;
-			bh = best_bh;
 			group = best_group;
 			goto found;
 		}
@@ -346,7 +328,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
 
 	for (i = 0; i < ngroups; i++) {
 		group = (parent_group + i) % ngroups;
-		desc = ext2_get_group_desc (sb, group, &bh);
+		desc = ext2_get_group_desc (sb, group, NULL);
 		if (!desc || !desc->bg_free_inodes_count)
 			continue;
 		if (sbi->s_debts[group] >= max_debt)
@@ -363,7 +345,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
 fallback:
 	for (i = 0; i < ngroups; i++) {
 		group = (parent_group + i) % ngroups;
-		desc = ext2_get_group_desc (sb, group, &bh);
+		desc = ext2_get_group_desc (sb, group, NULL);
 		if (!desc || !desc->bg_free_inodes_count)
 			continue;
 		if (le16_to_cpu(desc->bg_free_inodes_count) >= avefreei)
@@ -390,14 +372,13 @@ static int find_group_other(struct super_block *sb, struct inode *parent)
 	int parent_group = EXT2_I(parent)->i_block_group;
 	int ngroups = EXT2_SB(sb)->s_groups_count;
 	struct ext2_group_desc *desc;
-	struct buffer_head *bh;
 	int group, i;
 
 	/*
 	 * Try to place the inode in its parent directory
 	 */
 	group = parent_group;
-	desc = ext2_get_group_desc (sb, group, &bh);
+	desc = ext2_get_group_desc (sb, group, NULL);
 	if (desc && le16_to_cpu(desc->bg_free_inodes_count) &&
 			le16_to_cpu(desc->bg_free_blocks_count))
 		goto found;
@@ -421,7 +402,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent)
 		group += i;
 		if (group >= ngroups)
 			group -= ngroups;
-		desc = ext2_get_group_desc (sb, group, &bh);
+		desc = ext2_get_group_desc (sb, group, NULL);
 		if (desc && le16_to_cpu(desc->bg_free_inodes_count) &&
 				le16_to_cpu(desc->bg_free_blocks_count))
 			goto found;
@@ -435,7 +416,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent)
 	for (i = 0; i < ngroups; i++) {
 		if (++group >= ngroups)
 			group = 0;
-		desc = ext2_get_group_desc (sb, group, &bh);
+		desc = ext2_get_group_desc (sb, group, NULL);
 		if (desc && le16_to_cpu(desc->bg_free_inodes_count))
 			goto found;
 	}
@@ -446,7 +427,8 @@ found:
 	return group;
 }
 
-struct inode *ext2_new_inode(struct inode *dir, int mode)
+struct inode *ext2_new_inode(struct inode *dir, umode_t mode,
+			     const struct qstr *qstr)
 {
 	struct super_block *sb;
 	struct buffer_head *bitmap_bh = NULL;
@@ -543,77 +525,68 @@ got:
 		goto fail;
 	}
 
-	percpu_counter_mod(&sbi->s_freeinodes_counter, -1);
+	percpu_counter_add(&sbi->s_freeinodes_counter, -1);
 	if (S_ISDIR(mode))
 		percpu_counter_inc(&sbi->s_dirs_counter);
 
 	spin_lock(sb_bgl_lock(sbi, group));
-	gdp->bg_free_inodes_count =
-                cpu_to_le16(le16_to_cpu(gdp->bg_free_inodes_count) - 1);
+	le16_add_cpu(&gdp->bg_free_inodes_count, -1);
 	if (S_ISDIR(mode)) {
 		if (sbi->s_debts[group] < 255)
 			sbi->s_debts[group]++;
-		gdp->bg_used_dirs_count =
-			cpu_to_le16(le16_to_cpu(gdp->bg_used_dirs_count) + 1);
+		le16_add_cpu(&gdp->bg_used_dirs_count, 1);
 	} else {
 		if (sbi->s_debts[group])
 			sbi->s_debts[group]--;
 	}
 	spin_unlock(sb_bgl_lock(sbi, group));
 
-	sb->s_dirt = 1;
 	mark_buffer_dirty(bh2);
-	inode->i_uid = current->fsuid;
-	if (test_opt (sb, GRPID))
+	if (test_opt(sb, GRPID)) {
+		inode->i_mode = mode;
+		inode->i_uid = current_fsuid();
 		inode->i_gid = dir->i_gid;
-	else if (dir->i_mode & S_ISGID) {
-		inode->i_gid = dir->i_gid;
-		if (S_ISDIR(mode))
-			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
-	inode->i_mode = mode;
+		inode_init_owner(inode, dir, mode);
 
 	inode->i_ino = ino;
-	inode->i_blksize = PAGE_SIZE;	/* This is the optimal IO size (for stat), not the fs block size */
 	inode->i_blocks = 0;
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	memset(ei->i_data, 0, sizeof(ei->i_data));
-	ei->i_flags = EXT2_I(dir)->i_flags & ~EXT2_BTREE_FL;
-	if (S_ISLNK(mode))
-		ei->i_flags &= ~(EXT2_IMMUTABLE_FL|EXT2_APPEND_FL);
-	/* dirsync is only applied to directories */
-	if (!S_ISDIR(mode))
-		ei->i_flags &= ~EXT2_DIRSYNC_FL;
+	ei->i_flags =
+		ext2_mask_flags(mode, EXT2_I(dir)->i_flags & EXT2_FL_INHERITED);
 	ei->i_faddr = 0;
 	ei->i_frag_no = 0;
 	ei->i_frag_size = 0;
 	ei->i_file_acl = 0;
 	ei->i_dir_acl = 0;
 	ei->i_dtime = 0;
+	ei->i_block_alloc_info = NULL;
 	ei->i_block_group = group;
-	ei->i_next_alloc_block = 0;
-	ei->i_next_alloc_goal = 0;
-	ei->i_prealloc_block = 0;
-	ei->i_prealloc_count = 0;
 	ei->i_dir_start_lookup = 0;
 	ei->i_state = EXT2_STATE_NEW;
 	ext2_set_inode_flags(inode);
 	spin_lock(&sbi->s_next_gen_lock);
 	inode->i_generation = sbi->s_next_generation++;
 	spin_unlock(&sbi->s_next_gen_lock);
-	insert_inode_hash(inode);
+	if (insert_inode_locked(inode) < 0) {
+		ext2_error(sb, "ext2_new_inode",
+			   "inode number already in use - inode=%lu",
+			   (unsigned long) ino);
+		err = -EIO;
+		goto fail;
+	}
 
-	if (DQUOT_ALLOC_INODE(inode)) {
-		err = -ENOSPC;
+	dquot_initialize(inode);
+	err = dquot_alloc_inode(inode);
+	if (err)
 		goto fail_drop;
-	}
 
 	err = ext2_init_acl(inode, dir);
 	if (err)
 		goto fail_free_drop;
 
-	err = ext2_init_security(inode,dir);
+	err = ext2_init_security(inode, dir, qstr);
 	if (err)
 		goto fail_free_drop;
 
@@ -623,12 +596,13 @@ got:
 	return inode;
 
 fail_free_drop:
-	DQUOT_FREE_INODE(inode);
+	dquot_free_inode(inode);
 
 fail_drop:
-	DQUOT_DROP(inode);
+	dquot_drop(inode);
 	inode->i_flags |= S_NOQUOTA;
-	inode->i_nlink = 0;
+	clear_nlink(inode);
+	unlock_new_inode(inode);
 	iput(inode);
 	return ERR_PTR(err);
 
@@ -649,7 +623,6 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
 	unsigned long bitmap_count = 0;
 	struct buffer_head *bitmap_bh = NULL;
 
-	lock_super (sb);
 	es = EXT2_SB(sb)->s_es;
 	for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
 		unsigned x;
@@ -670,9 +643,9 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
 	}
 	brelse(bitmap_bh);
 	printk("ext2_count_free_inodes: stored = %lu, computed = %lu, %lu\n",
+		(unsigned long)
 		percpu_counter_read(&EXT2_SB(sb)->s_freeinodes_counter),
 		desc_count, bitmap_count);
-	unlock_super(sb);
 	return desc_count;
 #else
 	for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
@@ -700,43 +673,3 @@ unsigned long ext2_count_dirs (struct super_block * sb)
 	return count;
 }
 
-#ifdef CONFIG_EXT2_CHECK
-/* Called at mount-time, super-block is locked */
-void ext2_check_inodes_bitmap (struct super_block * sb)
-{
-	struct ext2_super_block * es = EXT2_SB(sb)->s_es;
-	unsigned long desc_count = 0, bitmap_count = 0;
-	struct buffer_head *bitmap_bh = NULL;
-	int i;
-
-	for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
-		struct ext2_group_desc *desc;
-		unsigned x;
-
-		desc = ext2_get_group_desc(sb, i, NULL);
-		if (!desc)
-			continue;
-		desc_count += le16_to_cpu(desc->bg_free_inodes_count);
-		brelse(bitmap_bh);
-		bitmap_bh = read_inode_bitmap(sb, i);
-		if (!bitmap_bh)
-			continue;
-		
-		x = ext2_count_free(bitmap_bh, EXT2_INODES_PER_GROUP(sb) / 8);
-		if (le16_to_cpu(desc->bg_free_inodes_count) != x)
-			ext2_error (sb, "ext2_check_inodes_bitmap",
-				    "Wrong free inodes count in group %d, "
-				    "stored = %d, counted = %lu", i,
-				    le16_to_cpu(desc->bg_free_inodes_count), x);
-		bitmap_count += x;
-	}
-	brelse(bitmap_bh);
-	if (percpu_counter_read(&EXT2_SB(sb)->s_freeinodes_counter) !=
-				bitmap_count)
-		ext2_error(sb, "ext2_check_inodes_bitmap",
-			    "Wrong free inodes count in super block, "
-			    "stored = %lu, counted = %lu",
-			    (unsigned long)le32_to_cpu(es->s_free_inodes_count),
-			    bitmap_count);
-}
-#endif