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bcachefs: Change destroy_inode to free_inode

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The vfs[1] documentation describes free_inode as follows:
```
free_inode
    this method is called from RCU callback. If you use call_rcu()
    in ->destroy_inode to free ‘struct inode’ memory, then it’s
    better to release memory in this method.
```

free_inode will be called by the RCU callback, so it might be better
to move the inode free operation to destroy_inode.

Similar to commit ae6b47b565 ("fs/ntfs3: Change destroy_inode to
free_inode").

Link:
[1]: https://www.kernel.org/doc/html/latest/filesystems/vfs.html

Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Youling Tang 2024-04-26 15:29:56 +08:00 committed by Kent Overstreet
parent c8bda9f20a
commit 36aa49d33e
1 changed files with 3 additions and 11 deletions
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14
fs/bcachefs/fs.c
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@ -1523,17 +1523,9 @@ static void bch2_vfs_inode_init(struct btree_trans *trans, subvol_inum inum,
mapping_set_large_folios(inode->v.i_mapping);
}
static void bch2_i_callback(struct rcu_head *head)
static void bch2_free_inode(struct inode *vinode)
{
struct inode *vinode = container_of(head, struct inode, i_rcu);
struct bch_inode_info *inode = to_bch_ei(vinode);
kmem_cache_free(bch2_inode_cache, inode);
}
static void bch2_destroy_inode(struct inode *vinode)
{
call_rcu(&vinode->i_rcu, bch2_i_callback);
kmem_cache_free(bch2_inode_cache, to_bch_ei(vinode));
}
static int inode_update_times_fn(struct btree_trans *trans,
@ -1841,7 +1833,7 @@ static int bch2_unfreeze(struct super_block *sb)
static const struct super_operations bch_super_operations = {
.alloc_inode = bch2_alloc_inode,
.destroy_inode = bch2_destroy_inode,
.free_inode = bch2_free_inode,
.write_inode = bch2_vfs_write_inode,
.evict_inode = bch2_evict_inode,
.sync_fs = bch2_sync_fs,