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-rw-r--r--fs/nilfs2/alloc.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h
index 5cccf874d69..9af34a7e6e1 100644
--- a/fs/nilfs2/alloc.h
+++ b/fs/nilfs2/alloc.h
@@ -29,6 +29,13 @@
#include <linux/buffer_head.h>
#include <linux/fs.h>
+/**
+ * nilfs_palloc_entries_per_group - get the number of entries per group
+ * @inode: inode of metadata file using this allocator
+ *
+ * The number of entries per group is defined by the number of bits
+ * that a bitmap block can maintain.
+ */
static inline unsigned long
nilfs_palloc_entries_per_group(const struct inode *inode)
{