static inline int compressed_bio_size(struct btrfs_root *root,
unsigned long disk_size)
{
- u16 csum_size = btrfs_super_csum_size(&root->fs_info->super_copy);
+ u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+
return sizeof(struct compressed_bio) +
((disk_size + root->sectorsize - 1) / root->sectorsize) *
csum_size;
u64 first_byte = disk_start;
struct block_device *bdev;
int ret;
+ int skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
WARN_ON(start & ((u64)PAGE_CACHE_SIZE - 1));
cb = kmalloc(compressed_bio_size(root, compressed_len), GFP_NOFS);
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
BUG_ON(ret);
- ret = btrfs_csum_one_bio(root, inode, bio, start, 1);
- BUG_ON(ret);
+ if (!skip_sum) {
+ ret = btrfs_csum_one_bio(root, inode, bio,
+ start, 1);
+ BUG_ON(ret);
+ }
ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
BUG_ON(ret);
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
BUG_ON(ret);
- ret = btrfs_csum_one_bio(root, inode, bio, start, 1);
- BUG_ON(ret);
+ if (!skip_sum) {
+ ret = btrfs_csum_one_bio(root, inode, bio, start, 1);
+ BUG_ON(ret);
+ }
ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
BUG_ON(ret);