u64 start, u64 len)
{
struct btrfs_fs_info *fs_info = inode->root->fs_info;
- int ret;
- int err = 0;
+ int ret = 0;
u64 extent_start = 0;
u64 extent_end = 0;
u64 objectid = btrfs_ino(inode);
}
em = alloc_extent_map();
if (!em) {
- err = -ENOMEM;
+ ret = -ENOMEM;
goto out;
}
em->start = EXTENT_MAP_HOLE;
path = btrfs_alloc_path();
if (!path) {
- err = -ENOMEM;
+ ret = -ENOMEM;
goto out;
}
ret = btrfs_lookup_file_extent(NULL, root, path, objectid, start, 0);
if (ret < 0) {
- err = ret;
goto out;
} else if (ret > 0) {
if (path->slots[0] == 0)
goto not_found;
path->slots[0]--;
+ ret = 0;
}
leaf = path->nodes[0];
extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
/* Only regular file could have regular/prealloc extent */
if (!S_ISREG(inode->vfs_inode.i_mode)) {
- err = -EUCLEAN;
+ ret = -EUCLEAN;
btrfs_crit(fs_info,
"regular/prealloc extent found for non-regular inode %llu",
btrfs_ino(inode));
path->slots[0]++;
if (path->slots[0] >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(root, path);
- if (ret < 0) {
- err = ret;
+ if (ret < 0)
goto out;
- } else if (ret > 0) {
+ else if (ret > 0)
goto not_found;
- }
+
leaf = path->nodes[0];
}
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
BTRFS_COMPRESS_NONE) {
ret = uncompress_inline(path, page, pg_offset,
extent_offset, item);
- if (ret) {
- err = ret;
+ if (ret)
goto out;
- }
} else {
map = kmap(page);
read_extent_buffer(leaf, map + pg_offset, ptr,
em->len = len;
em->block_start = EXTENT_MAP_HOLE;
insert:
+ ret = 0;
btrfs_release_path(path);
if (em->start > start || extent_map_end(em) <= start) {
btrfs_err(fs_info,
"bad extent! em: [%llu %llu] passed [%llu %llu]",
em->start, em->len, start, len);
- err = -EIO;
+ ret = -EIO;
goto out;
}
- err = 0;
write_lock(&em_tree->lock);
- err = btrfs_add_extent_mapping(fs_info, em_tree, &em, start, len);
+ ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, start, len);
write_unlock(&em_tree->lock);
out:
btrfs_free_path(path);
trace_btrfs_get_extent(root, inode, em);
- if (err) {
+ if (ret) {
free_extent_map(em);
- return ERR_PTR(err);
+ return ERR_PTR(ret);
}
return em;
}