1 files changed, 23 insertions, 14 deletions

diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 79742d824a0a..50378d8ff84b 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -932,8 +932,16 @@ static struct buffer_head * ext3_dx_find_entry(struct dentry *dentry,
         struct inode *dir = dentry->d_parent->d_inode;
 
         sb = dir->i_sb;
-        if (!(frame = dx_probe(dentry, NULL, &hinfo, frames, err)))
-                return NULL;
+        /* NFS may look up ".." - look at dx_root directory block */
+        if (namelen > 2 || name[0] != '.'||(name[1] != '.' && name[1] != '\0')){
+                if (!(frame = dx_probe(dentry, NULL, &hinfo, frames, err)))
+                        return NULL;
+        } else {
+                frame = frames;
+                frame->bh = NULL;                       /* for dx_release() */
+                frame->at = (struct dx_entry *)frames;  /* hack for zero entry*/
+                dx_set_block(frame->at, 0);             /* dx_root block is 0 */
+        }
         hash = hinfo.hash;
         do {
                 block = dx_get_block(frame->at);
@@ -1637,9 +1645,9 @@ static int ext3_create (struct inode * dir, struct dentry * dentry, int mode,
         int err, retries = 0;
 
 retry:
-        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
                                         EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
-                                        2*EXT3_QUOTA_INIT_BLOCKS);
+                                        2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
 
@@ -1671,9 +1679,9 @@ static int ext3_mknod (struct inode * dir, struct dentry *dentry,
                 return -EINVAL;
 
 retry:
-        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
                                         EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
-                                        2*EXT3_QUOTA_INIT_BLOCKS);
+                                        2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
 
@@ -1707,9 +1715,9 @@ static int ext3_mkdir(struct inode * dir, struct dentry * dentry, int mode)
                 return -EMLINK;
 
 retry:
-        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
                                         EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
-                                        2*EXT3_QUOTA_INIT_BLOCKS);
+                                        2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
 
@@ -1998,7 +2006,7 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry)
         /* Initialize quotas before so that eventual writes go in
          * separate transaction */
         DQUOT_INIT(dentry->d_inode);
-        handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS);
+        handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS(dir->i_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
 
@@ -2057,7 +2065,7 @@ static int ext3_unlink(struct inode * dir, struct dentry *dentry)
         /* Initialize quotas before so that eventual writes go
          * in separate transaction */
         DQUOT_INIT(dentry->d_inode);
-        handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS);
+        handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS(dir->i_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
 
@@ -2112,9 +2120,9 @@ static int ext3_symlink (struct inode * dir,
                 return -ENAMETOOLONG;
 
 retry:
-        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
                                         EXT3_INDEX_EXTRA_TRANS_BLOCKS + 5 +
-                                        2*EXT3_QUOTA_INIT_BLOCKS);
+                                        2*EXT3_QUOTA_INIT_BLOCKS(dir->i_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
 
@@ -2166,7 +2174,7 @@ static int ext3_link (struct dentry * old_dentry,
                 return -EMLINK;
 
 retry:
-        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
+        handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
                                         EXT3_INDEX_EXTRA_TRANS_BLOCKS);
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
@@ -2208,7 +2216,8 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
          * in separate transaction */
         if (new_dentry->d_inode)
                 DQUOT_INIT(new_dentry->d_inode);
-        handle = ext3_journal_start(old_dir, 2 * EXT3_DATA_TRANS_BLOCKS +
+        handle = ext3_journal_start(old_dir, 2 *
+                                        EXT3_DATA_TRANS_BLOCKS(old_dir->i_sb) +
                                         EXT3_INDEX_EXTRA_TRANS_BLOCKS + 2);
         if (IS_ERR(handle))
                 return PTR_ERR(handle);