diff options
Diffstat (limited to 'fs/btrfs/ordered-data.c')
| -rw-r--r-- | fs/btrfs/ordered-data.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 665c640e3ea6..81369827e514 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -1032,7 +1032,6 @@ int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u32 *sum, int len) { struct btrfs_ordered_sum *ordered_sum; - struct btrfs_sector_sum *sector_sums; struct btrfs_ordered_extent *ordered; struct btrfs_ordered_inode_tree *tree = &BTRFS_I(inode)->ordered_tree; unsigned long num_sectors; @@ -1050,18 +1049,16 @@ int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, disk_bytenr < ordered_sum->bytenr + ordered_sum->len) { i = (disk_bytenr - ordered_sum->bytenr) >> inode->i_sb->s_blocksize_bits; - sector_sums = ordered_sum->sums + i; num_sectors = ordered_sum->len >> inode->i_sb->s_blocksize_bits; - for (; i < num_sectors; i++) { - if (sector_sums[i].bytenr == disk_bytenr) { - sum[index] = sector_sums[i].sum; - index++; - if (index == len) - goto out; - disk_bytenr += sectorsize; - } - } + num_sectors = min_t(int, len - index, num_sectors - i); + memcpy(sum + index, ordered_sum->sums + i, + num_sectors); + + index += (int)num_sectors; + if (index == len) + goto out; + disk_bytenr += num_sectors * sectorsize; } } out: |