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ovl: get rid of PURE type 

The remainging uses of __OVL_PATH_PURE can be replaced by
ovl_dentry_is_opaque().

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2016-12-16 11:02:55 +01:00
parent 2aff4534b6
commit 38e813db61
3 changed files with 6 additions and 13 deletions
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7
fs/overlayfs/dir.c
View File

@ -803,10 +803,7 @@ static int ovl_rename(struct inode *olddir, struct dentry *old,
if (!overwrite && OVL_TYPE_MERGE_OR_LOWER(new_type) && new_is_dir)
goto out;
} else {
if (ovl_dentry_is_opaque(new))
new_type = __OVL_PATH_UPPER;
else
new_type = __OVL_PATH_UPPER | __OVL_PATH_PURE;
}
err = ovl_want_write(old);
@ -826,8 +823,8 @@ static int ovl_rename(struct inode *olddir, struct dentry *old,
goto out_drop_write;
}
old_opaque = !OVL_TYPE_PURE_UPPER(old_type);
new_opaque = !OVL_TYPE_PURE_UPPER(new_type);
old_opaque = ovl_dentry_is_opaque(old);
new_opaque = ovl_dentry_is_opaque(new);
old_cred = ovl_override_creds(old->d_sb);

6
fs/overlayfs/overlayfs.h
View File

@ -12,14 +12,12 @@
struct ovl_entry;
enum ovl_path_type {
__OVL_PATH_PURE = (1 << 0),
__OVL_PATH_UPPER = (1 << 1),
__OVL_PATH_MERGE = (1 << 2),
__OVL_PATH_UPPER = (1 << 0),
__OVL_PATH_MERGE = (1 << 1),
};
#define OVL_TYPE_UPPER(type) ((type) & __OVL_PATH_UPPER)
#define OVL_TYPE_MERGE(type) ((type) & __OVL_PATH_MERGE)
#define OVL_TYPE_PURE_UPPER(type) ((type) & __OVL_PATH_PURE)
#define OVL_TYPE_MERGE_OR_LOWER(type) \
(OVL_TYPE_MERGE(type) || !OVL_TYPE_UPPER(type))

4
fs/overlayfs/super.c
View File

@ -80,12 +80,10 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry)
/*
* Non-dir dentry can hold lower dentry from previous
* location. Its purity depends only on opaque flag.
* location.
*/
if (oe->numlower && S_ISDIR(dentry->d_inode->i_mode))
type |= __OVL_PATH_MERGE;
else if (!oe->opaque)
type |= __OVL_PATH_PURE;
} else {
if (oe->numlower > 1)
type |= __OVL_PATH_MERGE;