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71d18b5354
In the future we're going to want to use btrfs_truncate_inode_items without looking up the associated inode. In order to accommodate this add the inode to btrfs_truncate_control and handle the case where control->inode is NULL appropriately. This is fairly straightforward, we simply need to add a helper for the trace points, as the file extent map update is controlled by a flag on btrfs_truncate_control. Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_INODE_ITEM_H
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#define BTRFS_INODE_ITEM_H
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#include <linux/types.h>
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struct btrfs_trans_handle;
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struct btrfs_root;
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struct btrfs_path;
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struct btrfs_key;
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struct btrfs_inode_extref;
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struct btrfs_inode;
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struct extent_buffer;
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/*
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* Return this if we need to call truncate_block for the last bit of the
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* truncate.
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*/
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#define BTRFS_NEED_TRUNCATE_BLOCK 1
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struct btrfs_truncate_control {
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/*
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* IN: the inode we're operating on, this can be NULL if
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* ->clear_extent_range is false.
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*/
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struct btrfs_inode *inode;
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/* IN: the size we're truncating to. */
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u64 new_size;
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/* OUT: the number of extents truncated. */
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u64 extents_found;
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/* OUT: the last size we truncated this inode to. */
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u64 last_size;
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/* OUT: the number of bytes to sub from this inode. */
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u64 sub_bytes;
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/* IN: the ino we are truncating. */
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u64 ino;
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/*
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* IN: minimum key type to remove. All key types with this type are
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* removed only if their offset >= new_size.
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*/
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u32 min_type;
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/*
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* IN: true if we don't want to do extent reference updates for any file
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* extents we drop.
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*/
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bool skip_ref_updates;
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/*
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* IN: true if we need to clear the file extent range for the inode as
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* we drop the file extent items.
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*/
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bool clear_extent_range;
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};
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int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_truncate_control *control);
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int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const char *name, int name_len,
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u64 inode_objectid, u64 ref_objectid, u64 index);
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int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const char *name, int name_len,
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u64 inode_objectid, u64 ref_objectid, u64 *index);
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int btrfs_insert_empty_inode(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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int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
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*root, struct btrfs_path *path,
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struct btrfs_key *location, int mod);
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struct btrfs_inode_extref *btrfs_lookup_inode_extref(
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struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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const char *name, int name_len,
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u64 inode_objectid, u64 ref_objectid, int ins_len,
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int cow);
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struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
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int slot, const char *name,
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int name_len);
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struct btrfs_inode_extref *btrfs_find_name_in_ext_backref(
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struct extent_buffer *leaf, int slot, u64 ref_objectid,
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const char *name, int name_len);
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#endif
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