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ovl: add ovl_dentry_is_whiteout()

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And use it instead of ovl_dentry_is_opaque() where appropriate.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2016-12-16 11:02:55 +01:00
parent 99f5d08e36
commit c412ce4983
3 changed files with 9 additions and 3 deletions
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6
fs/overlayfs/dir.c
View file

@ -504,7 +504,7 @@ static int ovl_create_or_link(struct dentry *dentry, struct inode *inode,
put_cred(override_creds(override_cred));
put_cred(override_cred);
if (!ovl_dentry_is_opaque(dentry))
if (!ovl_dentry_is_whiteout(dentry))
err = ovl_create_upper(dentry, inode, stat, link,
hardlink);
else
@ -842,14 +842,14 @@ static int ovl_rename(struct inode *olddir, struct dentry *old,
if (overwrite) {
if (old_opaque) {
if (new->d_inode || !new_opaque) {
if (!ovl_dentry_is_whiteout(new)) {
/* Whiteout source */
flags |= RENAME_WHITEOUT;
} else {
/* Switch whiteouts */
flags |= RENAME_EXCHANGE;
}
} else if (is_dir && !new->d_inode && new_opaque) {
} else if (is_dir && ovl_dentry_is_whiteout(new)) {
flags |= RENAME_EXCHANGE;
cleanup_whiteout = true;
}

1
fs/overlayfs/overlayfs.h
View file

@ -161,6 +161,7 @@ struct dentry *ovl_workdir(struct dentry *dentry);
int ovl_want_write(struct dentry *dentry);
void ovl_drop_write(struct dentry *dentry);
bool ovl_dentry_is_opaque(struct dentry *dentry);
bool ovl_dentry_is_whiteout(struct dentry *dentry);
void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque);
bool ovl_is_whiteout(struct dentry *dentry);
const struct cred *ovl_override_creds(struct super_block *sb);

5
fs/overlayfs/super.c
View file

@ -209,6 +209,11 @@ bool ovl_dentry_is_opaque(struct dentry *dentry)
return oe->opaque;
}
bool ovl_dentry_is_whiteout(struct dentry *dentry)
{
return !dentry->d_inode && ovl_dentry_is_opaque(dentry);
}
void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque)
{
struct ovl_entry *oe = dentry->d_fsdata;