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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>
This commit is contained in:
Josef Bacik 2021-10-05 16:35:24 -04:00 committed by David Sterba
parent ba51e2a11e
commit 9a35fc9542
3 changed files with 25 additions and 47 deletions
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16
fs/btrfs/inode.c
View File

@ -4120,19 +4120,9 @@ skip_backref:
goto err;
}
ret = btrfs_del_inode_ref_in_log(trans, root, name, name_len, inode,
dir_ino);
if (ret != 0 && ret != -ENOENT) {
btrfs_abort_transaction(trans, ret);
goto err;
}
ret = btrfs_del_dir_entries_in_log(trans, root, name, name_len, dir,
index);
if (ret == -ENOENT)
ret = 0;
else if (ret)
btrfs_abort_transaction(trans, ret);
btrfs_del_inode_ref_in_log(trans, root, name, name_len, inode,
dir_ino);
btrfs_del_dir_entries_in_log(trans, root, name, name_len, dir, index);
/*
* If we have a pending delayed iput we could end up with the final iput

40
fs/btrfs/tree-log.c
View File

@ -3518,10 +3518,10 @@ static bool inode_logged(struct btrfs_trans_handle *trans,
* This optimizations allows us to avoid relogging the entire inode
* or the entire directory.
*/
int 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_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)
{
struct btrfs_root *log;
struct btrfs_dir_item *di;
@ -3531,11 +3531,11 @@ int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
u64 dir_ino = btrfs_ino(dir);
if (!inode_logged(trans, dir))
return 0;
return;
ret = join_running_log_trans(root);
if (ret)
return 0;
return;
mutex_lock(&dir->log_mutex);
@ -3583,48 +3583,36 @@ fail:
btrfs_free_path(path);
out_unlock:
mutex_unlock(&dir->log_mutex);
if (err == -ENOSPC) {
if (err < 0)
btrfs_set_log_full_commit(trans);
err = 0;
} else if (err < 0) {
btrfs_abort_transaction(trans, err);
}
btrfs_end_log_trans(root);
return err;
}
/* see comments for btrfs_del_dir_entries_in_log */
int 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_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)
{
struct btrfs_root *log;
u64 index;
int ret;
if (!inode_logged(trans, inode))
return 0;
return;
ret = join_running_log_trans(root);
if (ret)
return 0;
return;
log = root->log_root;
mutex_lock(&inode->log_mutex);
ret = btrfs_del_inode_ref(trans, log, name, name_len, btrfs_ino(inode),
dirid, &index);
mutex_unlock(&inode->log_mutex);
if (ret == -ENOSPC) {
if (ret < 0 && ret != -ENOENT)
btrfs_set_log_full_commit(trans);
ret = 0;
} else if (ret < 0 && ret != -ENOENT)
btrfs_abort_transaction(trans, ret);
btrfs_end_log_trans(root);
return ret;
}
/*

16
fs/btrfs/tree-log.h
View File

@ -70,14 +70,14 @@ 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);
int 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);
int 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_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,