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5caa490ed8
We've had weird bugs in the past where we forgot to adjust the truncate path to deal with the fact that we can be called by the tree log path. Instead of checking if our root is a LOG_ROOT use a flag on the btrfs_truncate_control to indicate that we don't want to do extent reference updates during this truncate. 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>
82 lines
2.3 KiB
C
82 lines
2.3 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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/* 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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/*
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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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int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_inode *inode,
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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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