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-rw-r--r--fs/dcache.c39
1 files changed, 30 insertions, 9 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 593079176123..915816e90049 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -257,11 +257,25 @@ static void __d_free(struct rcu_head *head)
kmem_cache_free(dentry_cache, dentry);
}
+static void __d_free_external_name(struct rcu_head *head)
+{
+ struct external_name *name = container_of(head, struct external_name,
+ u.head);
+
+ mod_node_page_state(page_pgdat(virt_to_page(name)),
+ NR_INDIRECTLY_RECLAIMABLE_BYTES,
+ -ksize(name));
+
+ kfree(name);
+}
+
static void __d_free_external(struct rcu_head *head)
{
struct dentry *dentry = container_of(head, struct dentry, d_u.d_rcu);
- kfree(external_name(dentry));
- kmem_cache_free(dentry_cache, dentry);
+
+ __d_free_external_name(&external_name(dentry)->u.head);
+
+ kmem_cache_free(dentry_cache, dentry);
}
static inline int dname_external(const struct dentry *dentry)
@@ -291,7 +305,7 @@ void release_dentry_name_snapshot(struct name_snapshot *name)
struct external_name *p;
p = container_of(name->name, struct external_name, name[0]);
if (unlikely(atomic_dec_and_test(&p->u.count)))
- kfree_rcu(p, u.head);
+ call_rcu(&p->u.head, __d_free_external_name);
}
}
EXPORT_SYMBOL(release_dentry_name_snapshot);
@@ -1617,6 +1631,7 @@ EXPORT_SYMBOL(d_invalidate);
struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
{
+ struct external_name *ext = NULL;
struct dentry *dentry;
char *dname;
int err;
@@ -1637,14 +1652,14 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
dname = dentry->d_iname;
} else if (name->len > DNAME_INLINE_LEN-1) {
size_t size = offsetof(struct external_name, name[1]);
- struct external_name *p = kmalloc(size + name->len,
- GFP_KERNEL_ACCOUNT);
- if (!p) {
+
+ ext = kmalloc(size + name->len, GFP_KERNEL_ACCOUNT);
+ if (!ext) {
kmem_cache_free(dentry_cache, dentry);
return NULL;
}
- atomic_set(&p->u.count, 1);
- dname = p->name;
+ atomic_set(&ext->u.count, 1);
+ dname = ext->name;
} else {
dname = dentry->d_iname;
}
@@ -1683,6 +1698,12 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
}
}
+ if (unlikely(ext)) {
+ pg_data_t *pgdat = page_pgdat(virt_to_page(ext));
+ mod_node_page_state(pgdat, NR_INDIRECTLY_RECLAIMABLE_BYTES,
+ ksize(ext));
+ }
+
this_cpu_inc(nr_dentry);
return dentry;
@@ -2770,7 +2791,7 @@ static void copy_name(struct dentry *dentry, struct dentry *target)
dentry->d_name.hash_len = target->d_name.hash_len;
}
if (old_name && likely(atomic_dec_and_test(&old_name->u.count)))
- kfree_rcu(old_name, u.head);
+ call_rcu(&old_name->u.head, __d_free_external_name);
}
/*