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| author | Chandan Rajendra <chandan@linux.vnet.ibm.com> | 2017-07-24 08:57:54 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-11-09 10:23:27 +0100 |
| commit | b93436320c1e9089a055941523571cd7c037f7cb (patch) | |
| tree | c97ece67e4499dd7b184b728272786b597aed681 /fs/overlayfs/overlayfs.h | |
| parent | ovl: move include of ovl_entry.h into overlayfs.h (diff) | |
| download | linux-b93436320c1e9089a055941523571cd7c037f7cb.tar.xz linux-b93436320c1e9089a055941523571cd7c037f7cb.zip | |
ovl: re-structure overlay lower layers in-memory
Define new structures to represent overlay instance lower layers and
overlay merge dir lower layers to make room for storing more per layer
information in-memory.
Instead of keeping the fs instance lower layers in an array of struct
vfsmount, keep them in an array of new struct ovl_layer, that has a
pointer to struct vfsmount.
Instead of keeping the dentry lower layers in an array of struct path,
keep them in an array of new struct ovl_path, that has a pointer to
struct dentry and to struct ovl_layer.
Add a small helper to find the fs layer id that correspopnds to a lower
struct ovl_path and use it in ovl_lookup().
[amir: split re-structure from anonymous bdev patch]
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/overlayfs.h')
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 1cf3bdd193a4..cefe5a97d048 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -251,7 +251,7 @@ static inline bool ovl_is_impuredir(struct dentry *dentry) /* namei.c */ int ovl_verify_origin(struct dentry *dentry, struct vfsmount *mnt, struct dentry *origin, bool is_upper, bool set); -int ovl_verify_index(struct dentry *index, struct path *lowerstack, +int ovl_verify_index(struct dentry *index, struct ovl_path *lower, unsigned int numlower); int ovl_get_index_name(struct dentry *origin, struct qstr *name); int ovl_path_next(int idx, struct dentry *dentry, struct path *path); @@ -268,7 +268,7 @@ int ovl_check_d_type_supported(struct path *realpath); void ovl_workdir_cleanup(struct inode *dir, struct vfsmount *mnt, struct dentry *dentry, int level); int ovl_indexdir_cleanup(struct dentry *dentry, struct vfsmount *mnt, - struct path *lowerstack, unsigned int numlower); + struct ovl_path *lower, unsigned int numlower); /* inode.c */ int ovl_set_nlink_upper(struct dentry *dentry); |