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4d0120a519
Instead of using a inode pointer, use a btrfs_inode pointer in the log context structure, as this is generally what we need and allows for some internal APIs to take a btrfs_inode instead, making them more consistent with most of the code base. This will later allow to help to remove a lot of BTRFS_I() calls in btrfs_sync_file(). Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
102 lines
3.6 KiB
C
102 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2008 Oracle. All rights reserved.
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*/
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#ifndef BTRFS_TREE_LOG_H
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#define BTRFS_TREE_LOG_H
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#include <linux/list.h>
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#include <linux/fs.h>
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#include "messages.h"
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#include "ctree.h"
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#include "transaction.h"
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struct inode;
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struct dentry;
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struct btrfs_ordered_extent;
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struct btrfs_root;
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struct btrfs_trans_handle;
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/* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
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#define BTRFS_NO_LOG_SYNC 256
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/*
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* We can't use the tree log for whatever reason, force a transaction commit.
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* We use a negative value because there are functions through the logging code
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* that need to return an error (< 0 value), false (0) or true (1). Any negative
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* value will do, as it will cause the log to be marked for a full sync.
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*/
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#define BTRFS_LOG_FORCE_COMMIT (-(MAX_ERRNO + 1))
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struct btrfs_log_ctx {
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int log_ret;
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int log_transid;
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bool log_new_dentries;
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bool logging_new_name;
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bool logging_new_delayed_dentries;
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/* Indicate if the inode being logged was logged before. */
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bool logged_before;
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struct btrfs_inode *inode;
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struct list_head list;
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/* Only used for fast fsyncs. */
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struct list_head ordered_extents;
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struct list_head conflict_inodes;
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int num_conflict_inodes;
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bool logging_conflict_inodes;
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/*
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* Used for fsyncs that need to copy items from the subvolume tree to
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* the log tree (full sync flag set or copy everything flag set) to
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* avoid allocating a temporary extent buffer while holding a lock on
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* an extent buffer of the subvolume tree and under the log transaction.
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* Also helps to avoid allocating and freeing a temporary extent buffer
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* in case we need to process multiple leaves from the subvolume tree.
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*/
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struct extent_buffer *scratch_eb;
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};
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void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, struct btrfs_inode *inode);
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void btrfs_init_log_ctx_scratch_eb(struct btrfs_log_ctx *ctx);
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void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx);
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static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
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{
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WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);
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}
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static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
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{
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return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==
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trans->transid;
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}
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int btrfs_sync_log(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, struct btrfs_log_ctx *ctx);
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int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
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int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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int btrfs_recover_log_trees(struct btrfs_root *tree_root);
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int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
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struct dentry *dentry,
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struct btrfs_log_ctx *ctx);
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void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const struct fscrypt_str *name,
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struct btrfs_inode *dir, u64 index);
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void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const struct fscrypt_str *name,
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struct btrfs_inode *inode, u64 dirid);
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void btrfs_end_log_trans(struct btrfs_root *root);
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void btrfs_pin_log_trans(struct btrfs_root *root);
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void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
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struct btrfs_inode *dir, struct btrfs_inode *inode,
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bool for_rename);
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void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
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struct btrfs_inode *dir);
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void btrfs_log_new_name(struct btrfs_trans_handle *trans,
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struct dentry *old_dentry, struct btrfs_inode *old_dir,
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u64 old_dir_index, struct dentry *parent);
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#endif
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