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authorAmir Goldstein <amir73il@gmail.com>2017-05-11 16:42:26 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2017-05-19 09:33:49 +0200
commitee1d6d37b6b884383b501089be93ce94f2153028 (patch)
treefd490f8a866c66e17883c240e1caffff1896c2c8 /fs/overlayfs/util.c
parent3d27573ce32b47ba54e6680c77c26a700d67cc16 (diff)
downloadlinux-ee1d6d37b6b884383b501089be93ce94f2153028.tar.bz2
ovl: mark upper dir with type origin entries "impure"
When moving a merge dir or non-dir with copy up origin into a non-merge upper dir (a.k.a pure upper dir), we are marking the target parent dir "impure". ovl_iterate() iterates pure upper dirs directly, because there is no need to filter out whiteouts and merge dir content with lower dir. But for the case of an "impure" upper dir, ovl_iterate() will not be able to iterate the real upper dir directly, because it will need to lookup the origin inode and use it to fill d_ino. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/util.c')
-rw-r--r--fs/overlayfs/util.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index 4d541a8d0834..e0dfb07d5457 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -175,6 +175,13 @@ bool ovl_dentry_is_opaque(struct dentry *dentry)
return oe->opaque;
}
+bool ovl_dentry_is_impure(struct dentry *dentry)
+{
+ struct ovl_entry *oe = dentry->d_fsdata;
+
+ return oe->impure;
+}
+
bool ovl_dentry_is_whiteout(struct dentry *dentry)
{
return !dentry->d_inode && ovl_dentry_is_opaque(dentry);
@@ -187,6 +194,13 @@ void ovl_dentry_set_opaque(struct dentry *dentry)
oe->opaque = true;
}
+void ovl_dentry_set_impure(struct dentry *dentry)
+{
+ struct ovl_entry *oe = dentry->d_fsdata;
+
+ oe->impure = true;
+}
+
bool ovl_redirect_dir(struct super_block *sb)
{
struct ovl_fs *ofs = sb->s_fs_info;