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Many functions throughout btrfs take name buffer and name length arguments. Most of these functions at the highest level are usually called with these arguments extracted from a supplied dentry's name. But the entire name can be passed instead, making each function a little more elegant. Each function whose arguments are currently the name and length extracted from a dentry is herein converted to instead take a pointer to the name in the dentry. The couple of calls to these calls without a struct dentry are converted to create an appropriate qstr to pass in. Additionally, every function which is only called with a name/len extracted directly from a qstr is also converted. This change has positive effect on stack consumption, frame of many functions is reduced but this will be used in the future for fscrypt related structures. Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
108 lines
3.4 KiB
C
108 lines
3.4 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 "messages.h"
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#include "ctree.h"
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#include "transaction.h"
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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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/* We can't use the tree log for whatever reason, force a transaction commit */
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#define BTRFS_LOG_FORCE_COMMIT (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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/* Tracks the last logged dir item/index key offset. */
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u64 last_dir_item_offset;
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struct 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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static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
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struct inode *inode)
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{
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ctx->log_ret = 0;
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ctx->log_transid = 0;
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ctx->log_new_dentries = false;
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ctx->logging_new_name = false;
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ctx->logging_new_delayed_dentries = false;
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ctx->logged_before = false;
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ctx->inode = inode;
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INIT_LIST_HEAD(&ctx->list);
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INIT_LIST_HEAD(&ctx->ordered_extents);
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INIT_LIST_HEAD(&ctx->conflict_inodes);
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ctx->num_conflict_inodes = 0;
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ctx->logging_conflict_inodes = false;
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}
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static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
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{
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struct btrfs_ordered_extent *ordered;
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struct btrfs_ordered_extent *tmp;
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ASSERT(inode_is_locked(ctx->inode));
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list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) {
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list_del_init(&ordered->log_list);
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btrfs_put_ordered_extent(ordered);
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}
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}
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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 qstr *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 qstr *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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int 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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