linux/fs/btrfs/tree-log.h
Josef Bacik 9a35fc9542 btrfs: change error handling for btrfs_delete_*_in_log
Currently we will abort the transaction if we get a random error (like
-EIO) while trying to remove the directory entries from the root log
during rename.

However since these are simply log tree related errors, we can mark the
trans as needing a full commit.  Then if the error was truly
catastrophic we'll hit it during the normal commit and abort as
appropriate.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2021-10-26 19:08:05 +02:00

93 lines
2.8 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2008 Oracle. All rights reserved.
*/
#ifndef BTRFS_TREE_LOG_H
#define BTRFS_TREE_LOG_H
#include "ctree.h"
#include "transaction.h"
/* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
#define BTRFS_NO_LOG_SYNC 256
struct btrfs_log_ctx {
int log_ret;
int log_transid;
bool log_new_dentries;
bool logging_new_name;
/* Tracks the last logged dir item/index key offset. */
u64 last_dir_item_offset;
struct inode *inode;
struct list_head list;
/* Only used for fast fsyncs. */
struct list_head ordered_extents;
};
static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
struct inode *inode)
{
ctx->log_ret = 0;
ctx->log_transid = 0;
ctx->log_new_dentries = false;
ctx->logging_new_name = false;
ctx->inode = inode;
INIT_LIST_HEAD(&ctx->list);
INIT_LIST_HEAD(&ctx->ordered_extents);
}
static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
{
struct btrfs_ordered_extent *ordered;
struct btrfs_ordered_extent *tmp;
ASSERT(inode_is_locked(ctx->inode));
list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) {
list_del_init(&ordered->log_list);
btrfs_put_ordered_extent(ordered);
}
}
static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
{
WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);
}
static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
{
return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==
trans->transid;
}
int btrfs_sync_log(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_log_ctx *ctx);
int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_recover_log_trees(struct btrfs_root *tree_root);
int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
struct dentry *dentry,
struct btrfs_log_ctx *ctx);
void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
struct btrfs_inode *dir, u64 index);
void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
struct btrfs_inode *inode, u64 dirid);
void btrfs_end_log_trans(struct btrfs_root *root);
void btrfs_pin_log_trans(struct btrfs_root *root);
void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
struct btrfs_inode *dir, struct btrfs_inode *inode,
int for_rename);
void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
struct btrfs_inode *dir);
void btrfs_log_new_name(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode, struct btrfs_inode *old_dir,
struct dentry *parent);
#endif