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ovl: move cache and version to ovl_inode 

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2017-07-04 22:03:16 +02:00
parent a015dafcaf
commit 04a01ac7ed
3 changed files with 13 additions and 17 deletions
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6
fs/overlayfs/ovl_entry.h
View File

@ -35,12 +35,8 @@ struct ovl_fs {
/* private information held for every overlayfs dentry */
struct ovl_entry {
struct ovl_dir_cache *cache;
union {
struct {
u64 version;
bool opaque;
};
struct rcu_head rcu;
};
unsigned numlower;
@ -50,7 +46,9 @@ struct ovl_entry {
struct ovl_entry *ovl_alloc_entry(unsigned int numlower);
struct ovl_inode {
struct ovl_dir_cache *cache;
const char *redirect;
u64 version;
unsigned long flags;
struct inode vfs_inode;
struct dentry *__upperdentry;

2
fs/overlayfs/super.c
View File

@ -169,7 +169,9 @@ static struct inode *ovl_alloc_inode(struct super_block *sb)
{
struct ovl_inode *oi = kmem_cache_alloc(ovl_inode_cachep, GFP_KERNEL);
oi->cache = NULL;
oi->redirect = NULL;
oi->version = 0;
oi->flags = 0;
oi->__upperdentry = NULL;
oi->lower = NULL;

20
fs/overlayfs/util.c
View File

@ -160,16 +160,12 @@ struct inode *ovl_inode_real(struct inode *inode)
struct ovl_dir_cache *ovl_dir_cache(struct dentry *dentry)
{
struct ovl_entry *oe = dentry->d_fsdata;
return oe->cache;
return OVL_I(d_inode(dentry))->cache;
}
void ovl_set_dir_cache(struct dentry *dentry, struct ovl_dir_cache *cache)
{
struct ovl_entry *oe = dentry->d_fsdata;
oe->cache = cache;
OVL_I(d_inode(dentry))->cache = cache;
}
bool ovl_dentry_is_opaque(struct dentry *dentry)
@ -242,18 +238,18 @@ void ovl_inode_update(struct inode *inode, struct dentry *upperdentry)
void ovl_dentry_version_inc(struct dentry *dentry)
{
struct ovl_entry *oe = dentry->d_fsdata;
struct inode *inode = d_inode(dentry);
WARN_ON(!inode_is_locked(dentry->d_inode));
oe->version++;
WARN_ON(!inode_is_locked(inode));
OVL_I(inode)->version++;
}
u64 ovl_dentry_version_get(struct dentry *dentry)
{
struct ovl_entry *oe = dentry->d_fsdata;
struct inode *inode = d_inode(dentry);
WARN_ON(!inode_is_locked(dentry->d_inode));
return oe->version;
WARN_ON(!inode_is_locked(inode));
return OVL_I(inode)->version;
}
bool ovl_is_whiteout(struct dentry *dentry)