ext4: use ERR_PTR() abstraction for ext4_append()
Use ERR_PTR()/IS_ERR() abstraction instead of passing in a separate pointer to an integer for the error code, as a code cleanup. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>hifive-unleashed-5.1
parent
dc6982ff4d
commit
0f70b40613
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@ -707,6 +707,8 @@ struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode,
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/* ensure we send some value back into *errp */
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/* ensure we send some value back into *errp */
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*errp = 0;
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*errp = 0;
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if (create && err == 0)
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err = -ENOSPC; /* should never happen */
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if (err < 0)
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if (err < 0)
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*errp = err;
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*errp = err;
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if (err <= 0)
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if (err <= 0)
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@ -51,34 +51,28 @@
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static struct buffer_head *ext4_append(handle_t *handle,
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static struct buffer_head *ext4_append(handle_t *handle,
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struct inode *inode,
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struct inode *inode,
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ext4_lblk_t *block, int *err)
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ext4_lblk_t *block)
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{
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{
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struct buffer_head *bh;
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struct buffer_head *bh;
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int err = 0;
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if (unlikely(EXT4_SB(inode->i_sb)->s_max_dir_size_kb &&
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if (unlikely(EXT4_SB(inode->i_sb)->s_max_dir_size_kb &&
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((inode->i_size >> 10) >=
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((inode->i_size >> 10) >=
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EXT4_SB(inode->i_sb)->s_max_dir_size_kb))) {
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EXT4_SB(inode->i_sb)->s_max_dir_size_kb)))
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*err = -ENOSPC;
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return ERR_PTR(-ENOSPC);
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return NULL;
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}
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*block = inode->i_size >> inode->i_sb->s_blocksize_bits;
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*block = inode->i_size >> inode->i_sb->s_blocksize_bits;
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bh = ext4_bread(handle, inode, *block, 1, err);
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bh = ext4_bread(handle, inode, *block, 1, &err);
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if (bh) {
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if (!bh)
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return ERR_PTR(err);
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inode->i_size += inode->i_sb->s_blocksize;
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inode->i_size += inode->i_sb->s_blocksize;
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EXT4_I(inode)->i_disksize = inode->i_size;
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EXT4_I(inode)->i_disksize = inode->i_size;
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*err = ext4_journal_get_write_access(handle, bh);
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err = ext4_journal_get_write_access(handle, bh);
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if (*err) {
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if (err) {
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brelse(bh);
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brelse(bh);
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bh = NULL;
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ext4_std_error(inode->i_sb, err);
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}
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return ERR_PTR(err);
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}
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if (!bh && !(*err)) {
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*err = -EIO;
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ext4_error(inode->i_sb,
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"Directory hole detected on inode %lu\n",
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inode->i_ino);
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}
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}
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return bh;
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return bh;
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}
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}
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@ -1555,11 +1549,12 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
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EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
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EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
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csum_size = sizeof(struct ext4_dir_entry_tail);
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csum_size = sizeof(struct ext4_dir_entry_tail);
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bh2 = ext4_append (handle, dir, &newblock, &err);
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bh2 = ext4_append(handle, dir, &newblock);
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if (!(bh2)) {
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if (IS_ERR(bh2)) {
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brelse(*bh);
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brelse(*bh);
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*bh = NULL;
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*bh = NULL;
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goto errout;
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*error = PTR_ERR(bh2);
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return NULL;
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}
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}
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BUFFER_TRACE(*bh, "get_write_access");
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BUFFER_TRACE(*bh, "get_write_access");
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@ -1640,7 +1635,6 @@ journal_error:
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brelse(bh2);
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brelse(bh2);
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*bh = NULL;
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*bh = NULL;
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ext4_std_error(dir->i_sb, err);
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ext4_std_error(dir->i_sb, err);
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errout:
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*error = err;
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*error = err;
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return NULL;
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return NULL;
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}
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}
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@ -1815,10 +1809,10 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
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len = ((char *) root) + (blocksize - csum_size) - (char *) de;
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len = ((char *) root) + (blocksize - csum_size) - (char *) de;
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/* Allocate new block for the 0th block's dirents */
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/* Allocate new block for the 0th block's dirents */
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bh2 = ext4_append(handle, dir, &block, &retval);
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bh2 = ext4_append(handle, dir, &block);
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if (!(bh2)) {
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if (IS_ERR(bh2)) {
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brelse(bh);
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brelse(bh);
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return retval;
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return PTR_ERR(bh2);
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}
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}
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ext4_set_inode_flag(dir, EXT4_INODE_INDEX);
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ext4_set_inode_flag(dir, EXT4_INODE_INDEX);
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data1 = bh2->b_data;
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data1 = bh2->b_data;
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@ -1950,9 +1944,9 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
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return make_indexed_dir(handle, dentry, inode, bh);
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return make_indexed_dir(handle, dentry, inode, bh);
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brelse(bh);
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brelse(bh);
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}
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}
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bh = ext4_append(handle, dir, &block, &retval);
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bh = ext4_append(handle, dir, &block);
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if (!bh)
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if (IS_ERR(bh))
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return retval;
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return PTR_ERR(bh);
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de = (struct ext4_dir_entry_2 *) bh->b_data;
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de = (struct ext4_dir_entry_2 *) bh->b_data;
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de->inode = 0;
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de->inode = 0;
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de->rec_len = ext4_rec_len_to_disk(blocksize - csum_size, blocksize);
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de->rec_len = ext4_rec_len_to_disk(blocksize - csum_size, blocksize);
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@ -2023,9 +2017,11 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
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err = -ENOSPC;
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err = -ENOSPC;
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goto cleanup;
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goto cleanup;
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}
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}
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bh2 = ext4_append (handle, dir, &newblock, &err);
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bh2 = ext4_append(handle, dir, &newblock);
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if (!(bh2))
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if (IS_ERR(bh2)) {
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err = PTR_ERR(bh2);
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goto cleanup;
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goto cleanup;
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}
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node2 = (struct dx_node *)(bh2->b_data);
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node2 = (struct dx_node *)(bh2->b_data);
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entries2 = node2->entries;
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entries2 = node2->entries;
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memset(&node2->fake, 0, sizeof(struct fake_dirent));
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memset(&node2->fake, 0, sizeof(struct fake_dirent));
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@ -2364,8 +2360,9 @@ static int ext4_init_new_dir(handle_t *handle, struct inode *dir,
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}
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}
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inode->i_size = 0;
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inode->i_size = 0;
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if (!(dir_block = ext4_append(handle, inode, &block, &err)))
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dir_block = ext4_append(handle, inode, &block);
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goto out;
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if (IS_ERR(dir_block))
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return PTR_ERR(dir_block);
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BUFFER_TRACE(dir_block, "get_write_access");
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BUFFER_TRACE(dir_block, "get_write_access");
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err = ext4_journal_get_write_access(handle, dir_block);
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err = ext4_journal_get_write_access(handle, dir_block);
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if (err)
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if (err)
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