vfs: reorganize dput() memory accesses

[mirror_ubuntu-bionic-kernel.git] / include / linux / dcache.h

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 9169b91ea2d289e34952400b8ca89252222690e7..feaa8d88eef7171afb422208ceeb2ab7ad99fbcc 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -208,11 +208,12 @@ struct dentry_operations {
 #define DCACHE_MANAGED_DENTRY \
        (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT)
 
+#define DCACHE_LRU_LIST                0x80000
 #define DCACHE_DENTRY_KILLED   0x100000
 
 extern seqlock_t rename_lock;
 
-static inline int dname_external(struct dentry *dentry)
+static inline int dname_external(const struct dentry *dentry)
 {
        return dentry->d_name.name != dentry->d_iname;
 }
@@ -253,6 +254,7 @@ extern void d_prune_aliases(struct inode *);
 
 /* test whether we have any submounts in a subdir tree */
 extern int have_submounts(struct dentry *);
+extern int check_submounts_and_drop(struct dentry *);
 
 /*
  * This adds the entry to the hash queues.
@@ -357,17 +359,17 @@ extern struct dentry *dget_parent(struct dentry *dentry);
  *     Returns true if the dentry passed is not currently hashed.
  */
  
-static inline int d_unhashed(struct dentry *dentry)
+static inline int d_unhashed(const struct dentry *dentry)
 {
        return hlist_bl_unhashed(&dentry->d_hash);
 }
 
-static inline int d_unlinked(struct dentry *dentry)
+static inline int d_unlinked(const struct dentry *dentry)
 {
        return d_unhashed(dentry) && !IS_ROOT(dentry);
 }
 
-static inline int cant_mount(struct dentry *dentry)
+static inline int cant_mount(const struct dentry *dentry)
 {
        return (dentry->d_flags & DCACHE_CANT_MOUNT);
 }
@@ -381,12 +383,12 @@ static inline void dont_mount(struct dentry *dentry)
 
 extern void dput(struct dentry *);
 
-static inline bool d_managed(struct dentry *dentry)
+static inline bool d_managed(const struct dentry *dentry)
 {
        return dentry->d_flags & DCACHE_MANAGED_DENTRY;
 }
 
-static inline bool d_mountpoint(struct dentry *dentry)
+static inline bool d_mountpoint(const struct dentry *dentry)
 {
        return dentry->d_flags & DCACHE_MOUNTED;
 }