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97e3823933
Although we have an existing function, btrfs_lookup_csums_range(), to find all data checksums for a range, it's based on a btrfs_ordered_sum list. For the incoming RAID56 data checksum verification at RMW time, we don't want to waste time by allocating temporary memory. So this patch will introduce a new helper, btrfs_lookup_csums_bitmap(). It will use bitmap based result, which will be a perfect fit for later RAID56 usage. Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
36 lines
1.6 KiB
C
36 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_FILE_ITEM_H
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#define BTRFS_FILE_ITEM_H
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int btrfs_del_csums(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 bytenr, u64 len);
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blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u8 *dst);
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int btrfs_insert_hole_extent(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 objectid, u64 pos,
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u64 num_bytes);
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int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path, u64 objectid,
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u64 bytenr, int mod);
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int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_ordered_sum *sums);
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blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio,
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u64 offset, bool one_ordered);
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int btrfs_lookup_csums_list(struct btrfs_root *root, u64 start, u64 end,
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struct list_head *list, int search_commit,
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bool nowait);
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int btrfs_lookup_csums_bitmap(struct btrfs_root *root, u64 start, u64 end,
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u8 *csum_buf, unsigned long *csum_bitmap);
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void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
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const struct btrfs_path *path,
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struct btrfs_file_extent_item *fi,
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struct extent_map *em);
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int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start,
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u64 len);
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int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, u64 len);
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void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size);
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u64 btrfs_file_extent_end(const struct btrfs_path *path);
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#endif
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