Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

[pandora-kernel.git] / fs / ext4 / namei.c

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index dc40e75..5485390 100644 (file)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -581,9 +581,9 @@ static int htree_dirblock_to_tree(struct file *dir_file,
                                           dir->i_sb->s_blocksize -
                                           EXT4_DIR_REC_LEN(0));
        for (; de < top; de = ext4_next_entry(de, dir->i_sb->s_blocksize)) {
-               if (!ext4_check_dir_entry(dir, de, bh,
-                                       (block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))
-                                               +((char *)de - bh->b_data))) {
+               if (ext4_check_dir_entry(dir, NULL, de, bh,
+                               (block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))
+                                        + ((char *)de - bh->b_data))) {
                        /* On error, skip the f_pos to the next block. */
                        dir_file->f_pos = (dir_file->f_pos |
                                        (dir->i_sb->s_blocksize - 1)) + 1;
@@ -820,7 +820,7 @@ static inline int search_dirblock(struct buffer_head *bh,
                if ((char *) de + namelen <= dlimit &&
                    ext4_match (namelen, name, de)) {
                        /* found a match - just to be sure, do a full check */
-                       if (!ext4_check_dir_entry(dir, de, bh, offset))
+                       if (ext4_check_dir_entry(dir, NULL, de, bh, offset))
                                return -1;
                        *res_dir = de;
                        return 1;
@@ -1036,7 +1036,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, stru
                        return ERR_PTR(-EIO);
                }
                inode = ext4_iget(dir->i_sb, ino);
-               if (unlikely(IS_ERR(inode))) {
+               if (IS_ERR(inode)) {
                        if (PTR_ERR(inode) == -ESTALE) {
                                EXT4_ERROR_INODE(dir,
                                                 "deleted inode referenced: %u",
@@ -1269,7 +1269,7 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry,
                de = (struct ext4_dir_entry_2 *)bh->b_data;
                top = bh->b_data + blocksize - reclen;
                while ((char *) de <= top) {
-                       if (!ext4_check_dir_entry(dir, de, bh, offset))
+                       if (ext4_check_dir_entry(dir, NULL, de, bh, offset))
                                return -EIO;
                        if (ext4_match(namelen, name, de))
                                return -EEXIST;
@@ -1602,7 +1602,11 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
                        if (err)
                                goto journal_error;
                }
-               ext4_handle_dirty_metadata(handle, inode, frames[0].bh);
+               err = ext4_handle_dirty_metadata(handle, inode, frames[0].bh);
+               if (err) {
+                       ext4_std_error(inode->i_sb, err);
+                       goto cleanup;
+               }
        }
        de = do_split(handle, dir, &bh, frame, &hinfo, &err);
        if (!de)
@@ -1630,17 +1634,21 @@ static int ext4_delete_entry(handle_t *handle,
 {
        struct ext4_dir_entry_2 *de, *pde;
        unsigned int blocksize = dir->i_sb->s_blocksize;
-       int i;
+       int i, err;
 
        i = 0;
        pde = NULL;
        de = (struct ext4_dir_entry_2 *) bh->b_data;
        while (i < bh->b_size) {
-               if (!ext4_check_dir_entry(dir, de, bh, i))
+               if (ext4_check_dir_entry(dir, NULL, de, bh, i))
                        return -EIO;
                if (de == de_del)  {
                        BUFFER_TRACE(bh, "get_write_access");
-                       ext4_journal_get_write_access(handle, bh);
+                       err = ext4_journal_get_write_access(handle, bh);
+                       if (unlikely(err)) {
+                               ext4_std_error(dir->i_sb, err);
+                               return err;
+                       }
                        if (pde)
                                pde->rec_len = ext4_rec_len_to_disk(
                                        ext4_rec_len_from_disk(pde->rec_len,
@@ -1652,7 +1660,11 @@ static int ext4_delete_entry(handle_t *handle,
                                de->inode = 0;
                        dir->i_version++;
                        BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
-                       ext4_handle_dirty_metadata(handle, dir, bh);
+                       err = ext4_handle_dirty_metadata(handle, dir, bh);
+                       if (unlikely(err)) {
+                               ext4_std_error(dir->i_sb, err);
+                               return err;
+                       }
                        return 0;
                }
                i += ext4_rec_len_from_disk(de->rec_len, blocksize);
@@ -1789,7 +1801,7 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 {
        handle_t *handle;
        struct inode *inode;
-       struct buffer_head *dir_block;
+       struct buffer_head *dir_block = NULL;
        struct ext4_dir_entry_2 *de;
        unsigned int blocksize = dir->i_sb->s_blocksize;
        int err, retries = 0;
@@ -1822,7 +1834,9 @@ retry:
        if (!dir_block)
                goto out_clear_inode;
        BUFFER_TRACE(dir_block, "get_write_access");
-       ext4_journal_get_write_access(handle, dir_block);
+       err = ext4_journal_get_write_access(handle, dir_block);
+       if (err)
+               goto out_clear_inode;
        de = (struct ext4_dir_entry_2 *) dir_block->b_data;
        de->inode = cpu_to_le32(inode->i_ino);
        de->name_len = 1;
@@ -1839,10 +1853,12 @@ retry:
        ext4_set_de_type(dir->i_sb, de, S_IFDIR);
        inode->i_nlink = 2;
        BUFFER_TRACE(dir_block, "call ext4_handle_dirty_metadata");
-       ext4_handle_dirty_metadata(handle, dir, dir_block);
-       brelse(dir_block);
-       ext4_mark_inode_dirty(handle, inode);
-       err = ext4_add_entry(handle, dentry, inode);
+       err = ext4_handle_dirty_metadata(handle, dir, dir_block);
+       if (err)
+               goto out_clear_inode;
+       err = ext4_mark_inode_dirty(handle, inode);
+       if (!err)
+               err = ext4_add_entry(handle, dentry, inode);
        if (err) {
 out_clear_inode:
                clear_nlink(inode);
@@ -1853,10 +1869,13 @@ out_clear_inode:
        }
        ext4_inc_count(handle, dir);
        ext4_update_dx_flag(dir);
-       ext4_mark_inode_dirty(handle, dir);
+       err = ext4_mark_inode_dirty(handle, dir);
+       if (err)
+               goto out_clear_inode;
        d_instantiate(dentry, inode);
        unlock_new_inode(inode);
 out_stop:
+       brelse(dir_block);
        ext4_journal_stop(handle);
        if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
                goto retry;
@@ -1919,7 +1938,7 @@ static int empty_dir(struct inode *inode)
                        }
                        de = (struct ext4_dir_entry_2 *) bh->b_data;
                }
-               if (!ext4_check_dir_entry(inode, de, bh, offset)) {
+               if (ext4_check_dir_entry(inode, NULL, de, bh, offset)) {
                        de = (struct ext4_dir_entry_2 *)(bh->b_data +
                                                         sb->s_blocksize);
                        offset = (offset | (sb->s_blocksize - 1)) + 1;
@@ -2407,7 +2426,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
                                        ext4_current_time(new_dir);
                ext4_mark_inode_dirty(handle, new_dir);
                BUFFER_TRACE(new_bh, "call ext4_handle_dirty_metadata");
-               ext4_handle_dirty_metadata(handle, new_dir, new_bh);
+               retval = ext4_handle_dirty_metadata(handle, new_dir, new_bh);
+               if (unlikely(retval)) {
+                       ext4_std_error(new_dir->i_sb, retval);
+                       goto end_rename;
+               }
                brelse(new_bh);
                new_bh = NULL;
        }
@@ -2459,7 +2482,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
                PARENT_INO(dir_bh->b_data, new_dir->i_sb->s_blocksize) =
                                                cpu_to_le32(new_dir->i_ino);
                BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata");
-               ext4_handle_dirty_metadata(handle, old_dir, dir_bh);
+               retval = ext4_handle_dirty_metadata(handle, old_dir, dir_bh);
+               if (retval) {
+                       ext4_std_error(old_dir->i_sb, retval);
+                       goto end_rename;
+               }
                ext4_dec_count(handle, old_dir);
                if (new_inode) {
                        /* checked empty_dir above, can't have another parent,