dcache: extrace and use d_unlinked()
d_unlinked() will be used in middle-term to ban checkpointing when opened
but unlinked file is detected, and in long term, to detect such situation
and special case on it.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 72ce2ae..30b93b2 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -353,6 +353,11 @@
return (dentry->d_flags & DCACHE_UNHASHED);
}
+static inline int d_unlinked(struct dentry *dentry)
+{
+ return d_unhashed(dentry) && !IS_ROOT(dentry);
+}
+
static inline struct dentry *dget_parent(struct dentry *dentry)
{
struct dentry *ret;