ovl: abstract ovl_inode lock with a helper
The abstraction improves code readabilty (to some). Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Родитель
0e32992f7f
Коммит
1e92e3072c
|
@ -290,6 +290,16 @@ static inline unsigned int ovl_xino_bits(struct super_block *sb)
|
|||
return ofs->xino_bits;
|
||||
}
|
||||
|
||||
static inline int ovl_inode_lock(struct inode *inode)
|
||||
{
|
||||
return mutex_lock_interruptible(&OVL_I(inode)->lock);
|
||||
}
|
||||
|
||||
static inline void ovl_inode_unlock(struct inode *inode)
|
||||
{
|
||||
mutex_unlock(&OVL_I(inode)->lock);
|
||||
}
|
||||
|
||||
|
||||
/* namei.c */
|
||||
int ovl_check_fh_len(struct ovl_fh *fh, int fh_len);
|
||||
|
|
|
@ -521,13 +521,13 @@ bool ovl_already_copied_up(struct dentry *dentry, int flags)
|
|||
|
||||
int ovl_copy_up_start(struct dentry *dentry, int flags)
|
||||
{
|
||||
struct ovl_inode *oi = OVL_I(d_inode(dentry));
|
||||
struct inode *inode = d_inode(dentry);
|
||||
int err;
|
||||
|
||||
err = mutex_lock_interruptible(&oi->lock);
|
||||
err = ovl_inode_lock(inode);
|
||||
if (!err && ovl_already_copied_up_locked(dentry, flags)) {
|
||||
err = 1; /* Already copied up */
|
||||
mutex_unlock(&oi->lock);
|
||||
ovl_inode_unlock(inode);
|
||||
}
|
||||
|
||||
return err;
|
||||
|
@ -535,7 +535,7 @@ int ovl_copy_up_start(struct dentry *dentry, int flags)
|
|||
|
||||
void ovl_copy_up_end(struct dentry *dentry)
|
||||
{
|
||||
mutex_unlock(&OVL_I(d_inode(dentry))->lock);
|
||||
ovl_inode_unlock(d_inode(dentry));
|
||||
}
|
||||
|
||||
bool ovl_check_origin_xattr(struct dentry *dentry)
|
||||
|
@ -740,11 +740,11 @@ fail:
|
|||
*/
|
||||
int ovl_nlink_start(struct dentry *dentry)
|
||||
{
|
||||
struct ovl_inode *oi = OVL_I(d_inode(dentry));
|
||||
struct inode *inode = d_inode(dentry);
|
||||
const struct cred *old_cred;
|
||||
int err;
|
||||
|
||||
if (WARN_ON(!d_inode(dentry)))
|
||||
if (WARN_ON(!inode))
|
||||
return -ENOENT;
|
||||
|
||||
/*
|
||||
|
@ -767,11 +767,11 @@ int ovl_nlink_start(struct dentry *dentry)
|
|||
return err;
|
||||
}
|
||||
|
||||
err = mutex_lock_interruptible(&oi->lock);
|
||||
err = ovl_inode_lock(inode);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (d_is_dir(dentry) || !ovl_test_flag(OVL_INDEX, d_inode(dentry)))
|
||||
if (d_is_dir(dentry) || !ovl_test_flag(OVL_INDEX, inode))
|
||||
goto out;
|
||||
|
||||
old_cred = ovl_override_creds(dentry->d_sb);
|
||||
|
@ -786,15 +786,16 @@ int ovl_nlink_start(struct dentry *dentry)
|
|||
|
||||
out:
|
||||
if (err)
|
||||
mutex_unlock(&oi->lock);
|
||||
ovl_inode_unlock(inode);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
void ovl_nlink_end(struct dentry *dentry)
|
||||
{
|
||||
if (ovl_test_flag(OVL_INDEX, d_inode(dentry)) &&
|
||||
d_inode(dentry)->i_nlink == 0) {
|
||||
struct inode *inode = d_inode(dentry);
|
||||
|
||||
if (ovl_test_flag(OVL_INDEX, inode) && inode->i_nlink == 0) {
|
||||
const struct cred *old_cred;
|
||||
|
||||
old_cred = ovl_override_creds(dentry->d_sb);
|
||||
|
@ -802,7 +803,7 @@ void ovl_nlink_end(struct dentry *dentry)
|
|||
revert_creds(old_cred);
|
||||
}
|
||||
|
||||
mutex_unlock(&OVL_I(d_inode(dentry))->lock);
|
||||
ovl_inode_unlock(inode);
|
||||
}
|
||||
|
||||
int ovl_lock_rename_workdir(struct dentry *workdir, struct dentry *upperdir)
|
||||
|
|
Загрузка…
Ссылка в новой задаче