From: Youling Tang <[email protected]>
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 ae6b47b5653e ("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 <[email protected]>
---
fs/bcachefs/fs.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
index afb57ea99431..c82ee192a2e2 100644
--- a/fs/bcachefs/fs.c
+++ b/fs/bcachefs/fs.c
@@ -1511,17 +1511,9 @@ 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,
@@ -1829,7 +1821,7 @@ 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,
--
2.34.1