vfs: export symbol d_find_any_alias()

Ceph needs this.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/fs/dcache.c b/fs/dcache.c
index 89509b5..ba96005 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1471,7 +1471,14 @@ static struct dentry * __d_find_any_alias(struct inode *inode)
        return alias;
 }
 
-static struct dentry * d_find_any_alias(struct inode *inode)
+/**
+ * d_find_any_alias - find any alias for a given inode
+ * @inode: inode to find an alias for
+ *
+ * If any aliases exist for the given inode, take and return a
+ * reference for one of them.  If no aliases exist, return %NULL.
+ */
+struct dentry *d_find_any_alias(struct inode *inode)
 {
        struct dentry *de;
 
@@ -1480,7 +1487,7 @@ static struct dentry * d_find_any_alias(struct inode *inode)
        spin_unlock(&inode->i_lock);
        return de;
 }
-
+EXPORT_SYMBOL(d_find_any_alias);
 
 /**
  * d_obtain_alias - find or allocate a dentry for a given inode

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index ed9f74f..3871ba7 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -241,6 +241,7 @@ extern struct dentry * d_alloc(struct dentry *, const struct qstr *);
 extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
 extern struct dentry * d_splice_alias(struct inode *, struct dentry *);
 extern struct dentry * d_add_ci(struct dentry *, struct inode *, struct qstr *);
+extern struct dentry *d_find_any_alias(struct inode *inode);
 extern struct dentry * d_obtain_alias(struct inode *);
 extern void shrink_dcache_sb(struct super_block *);
 extern void shrink_dcache_parent(struct dentry *);