readahead: introduce PG_readahead

[karo-tx-linux.git] / include / linux / dcache.h

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 44605be5940902caac298dc796d0d8376ff89686..aab53df4fafa338e46b96919d61e77ed2b20ff78 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -133,6 +133,7 @@ struct dentry_operations {
        int (*d_delete)(struct dentry *);
        void (*d_release)(struct dentry *);
        void (*d_iput)(struct dentry *, struct inode *);
+       char *(*d_dname)(struct dentry *, char *, int);
 };
 
 /* the dentry parameter passed to d_hash and d_compare is the parent
@@ -230,6 +231,7 @@ extern struct dentry * d_alloc_anon(struct inode *);
 extern struct dentry * d_splice_alias(struct inode *, struct dentry *);
 extern void shrink_dcache_sb(struct super_block *);
 extern void shrink_dcache_parent(struct dentry *);
+extern void shrink_dcache_for_umount(struct super_block *);
 extern int d_invalidate(struct dentry *);
 
 /* only used at mount-time */
@@ -292,6 +294,11 @@ extern struct dentry * d_hash_and_lookup(struct dentry *, struct qstr *);
 /* validate "insecure" dentry pointer */
 extern int d_validate(struct dentry *, struct dentry *);
 
+/*
+ * helper function for dentry_operations.d_dname() members
+ */
+extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
+
 extern char * d_path(struct dentry *, struct vfsmount *, char *, int);
   
 /* Allocation counts.. */