static int hfsplus_free_extents(struct super_block *sb,
struct hfsplus_extent *extent,
u32 offset, u32 block_nr)
{
u32 count, start;
int i;
int err = 0;
hfsplus_dump_extent(extent);
for (i = 0; i < 8; extent++, i++) {
count = be32_to_cpu(extent->block_count);
if (offset == count)
goto found;
else if (offset < count)
break;
offset -= count;
}
/* panic? */
return -EIO;
found:
for (;;) {
start = be32_to_cpu(extent->start_block);
if (count <= block_nr) {
err = hfsplus_block_free(sb, start, count);
if (err) {
pr_err("can't free extent\n");
hfs_dbg(EXTENT, " start: %u count: %u\n",
start, count);
}
extent->block_count = 0;
extent->start_block = 0;
block_nr -= count;
} else {
count -= block_nr;
err = hfsplus_block_free(sb, start + count, block_nr);
if (err) {
pr_err("can't free extent\n");
hfs_dbg(EXTENT, " start: %u count: %u\n",
start, count);
}
extent->block_count = cpu_to_be32(count);
block_nr = 0;
}
if (!block_nr || !i) {
/*
* Try to free all extents and
* return only last error
*/
return err;
}
i--;
extent--;
count = be32_to_cpu(extent->block_count);
}
}
static int hfsplus_free_extents(hfsplus_handle_t *hfsplus_handle, struct super_block *sb,
struct hfsplus_extent *extent,
u32 offset, u32 block_nr)
{
u32 count, start;
int i;
hfsplus_dump_extent(extent);
for (i = 0; i < 8; extent++, i++) {
count = be32_to_cpu(extent->block_count);
if (offset == count)
goto found;
else if (offset < count)
break;
offset -= count;
}
/* panic? */
printk("#### Return EIO from %s()\n", __FUNCTION__);
return -EIO;
found:
for (;;) {
start = be32_to_cpu(extent->start_block);
if (count <= block_nr) {
hfsplus_block_free(hfsplus_handle, sb, start, count);
extent->block_count = 0;
extent->start_block = 0;
block_nr -= count;
} else {
count -= block_nr;
hfsplus_block_free(hfsplus_handle, sb, start + count, block_nr);
extent->block_count = cpu_to_be32(count);
block_nr = 0;
}
if (!block_nr || !i)
return 0;
i--;
extent--;
count = be32_to_cpu(extent->block_count);
}
}
