}
-int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
- struct bio *bio, u32 *dst)
+static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
+ struct inode *inode, struct bio *bio,
+ u64 logical_offset, u32 *dst, int dio)
{
u32 sum;
struct bio_vec *bvec = bio->bi_io_vec;
int bio_index = 0;
- u64 offset;
+ u64 offset = 0;
u64 item_start_offset = 0;
u64 item_last_offset = 0;
u64 disk_bytenr;
WARN_ON(bio->bi_vcnt <= 0);
disk_bytenr = (u64)bio->bi_sector << 9;
+ if (dio)
+ offset = logical_offset;
while (bio_index < bio->bi_vcnt) {
- offset = page_offset(bvec->bv_page) + bvec->bv_offset;
+ if (!dio)
+ offset = page_offset(bvec->bv_page) + bvec->bv_offset;
ret = btrfs_find_ordered_sum(inode, offset, disk_bytenr, &sum);
if (ret == 0)
goto found;
else
set_state_private(io_tree, offset, sum);
disk_bytenr += bvec->bv_len;
+ offset += bvec->bv_len;
bio_index++;
bvec++;
}
return 0;
}
+int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
+ struct bio *bio, u32 *dst)
+{
+ return __btrfs_lookup_bio_sums(root, inode, bio, 0, dst, 0);
+}
+
+int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
+ struct bio *bio, u64 offset, u32 *dst)
+{
+ return __btrfs_lookup_bio_sums(root, inode, bio, offset, dst, 1);
+}
+
int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
struct list_head *list)
{
goto found;
}
ret = PTR_ERR(item);
+ if (ret != -EFBIG && ret != -ENOENT)
+ goto fail_unlock;
+
if (ret == -EFBIG) {
u32 item_size;
/* we found one, but it isn't big enough yet */