diff options
| -rw-r--r-- | fs/overlayfs/inode.c | 11 | ||||
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 2 | ||||
| -rw-r--r-- | fs/overlayfs/ovl_entry.h | 2 | ||||
| -rw-r--r-- | fs/overlayfs/super.c | 5 | ||||
| -rw-r--r-- | fs/overlayfs/util.c | 15 |
5 files changed, 27 insertions, 8 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 7ed5df9c0fa6..f29e137e6d60 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -779,13 +779,16 @@ void ovl_inode_init(struct inode *inode, struct ovl_inode_params *oip, unsigned long ino, int fsid) { struct inode *realinode; + struct ovl_inode *oi = OVL_I(inode); if (oip->upperdentry) - OVL_I(inode)->__upperdentry = oip->upperdentry; - if (oip->lowerpath && oip->lowerpath->dentry) - OVL_I(inode)->lower = igrab(d_inode(oip->lowerpath->dentry)); + oi->__upperdentry = oip->upperdentry; + if (oip->lowerpath && oip->lowerpath->dentry) { + oi->lowerpath.dentry = dget(oip->lowerpath->dentry); + oi->lowerpath.layer = oip->lowerpath->layer; + } if (oip->lowerdata) - OVL_I(inode)->lowerdata = igrab(d_inode(oip->lowerdata)); + oi->lowerdata = igrab(d_inode(oip->lowerdata)); realinode = ovl_inode_real(inode); ovl_copyattr(realinode, inode); diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 6cbb1fd2a4ec..7b4db5632600 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -374,11 +374,13 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry); void ovl_path_upper(struct dentry *dentry, struct path *path); void ovl_path_lower(struct dentry *dentry, struct path *path); void ovl_path_lowerdata(struct dentry *dentry, struct path *path); +void ovl_i_path_real(struct inode *inode, struct path *path); enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path); enum ovl_path_type ovl_path_realdata(struct dentry *dentry, struct path *path); struct dentry *ovl_dentry_upper(struct dentry *dentry); struct dentry *ovl_dentry_lower(struct dentry *dentry); struct dentry *ovl_dentry_lowerdata(struct dentry *dentry); +const struct ovl_layer *ovl_i_layer_lower(struct inode *inode); const struct ovl_layer *ovl_layer_lower(struct dentry *dentry); struct dentry *ovl_dentry_real(struct dentry *dentry); struct dentry *ovl_i_dentry_upper(struct inode *inode); diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h index 61b40d1268c8..469162ca9b21 100644 --- a/fs/overlayfs/ovl_entry.h +++ b/fs/overlayfs/ovl_entry.h @@ -134,7 +134,7 @@ struct ovl_inode { unsigned long flags; struct inode vfs_inode; struct dentry *__upperdentry; - struct inode *lower; + struct ovl_path lowerpath; /* synchronize copy up and more */ struct mutex lock; diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 2fd2d3e5eaba..0123c8086ee9 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -184,7 +184,8 @@ static struct inode *ovl_alloc_inode(struct super_block *sb) oi->version = 0; oi->flags = 0; oi->__upperdentry = NULL; - oi->lower = NULL; + oi->lowerpath.dentry = NULL; + oi->lowerpath.layer = NULL; oi->lowerdata = NULL; mutex_init(&oi->lock); @@ -205,7 +206,7 @@ static void ovl_destroy_inode(struct inode *inode) struct ovl_inode *oi = OVL_I(inode); dput(oi->__upperdentry); - iput(oi->lower); + dput(oi->lowerpath.dentry); if (S_ISDIR(inode->i_mode)) ovl_dir_cache_free(inode); else diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c index 81585cad055d..5fdaa9408c84 100644 --- a/fs/overlayfs/util.c +++ b/fs/overlayfs/util.c @@ -250,6 +250,17 @@ struct dentry *ovl_i_dentry_upper(struct inode *inode) return ovl_upperdentry_dereference(OVL_I(inode)); } +void ovl_i_path_real(struct inode *inode, struct path *path) +{ + path->dentry = ovl_i_dentry_upper(inode); + if (!path->dentry) { + path->dentry = OVL_I(inode)->lowerpath.dentry; + path->mnt = OVL_I(inode)->lowerpath.layer->mnt; + } else { + path->mnt = ovl_upper_mnt(OVL_FS(inode->i_sb)); + } +} + struct inode *ovl_inode_upper(struct inode *inode) { struct dentry *upperdentry = ovl_i_dentry_upper(inode); @@ -259,7 +270,9 @@ struct inode *ovl_inode_upper(struct inode *inode) struct inode *ovl_inode_lower(struct inode *inode) { - return OVL_I(inode)->lower; + struct dentry *lowerdentry = OVL_I(inode)->lowerpath.dentry; + + return lowerdentry ? d_inode(lowerdentry) : NULL; } struct inode *ovl_inode_real(struct inode *inode) |