shithub: lwext4

Info  •  Files  •  Log  •  Branches

Make ext4_sb_sparse public

--- a/lwext4/ext4_super.c

+++ b/lwext4/ext4_super.c

@@ -123,7 +123,7 @@

 	return true;

 }

-static inline int is_multiple(uint32_t a, uint32_t b)

+static inline int is_power_of(uint32_t a, uint32_t b)

 {

 	while (1) {

 		if (a < b)

@@ -136,7 +136,7 @@

 	}

 }

-static int ext4_sb_sparse(uint32_t group)

+bool ext4_sb_sparse(uint32_t group)

 {

 	if (group <= 1)

 		return 1;

@@ -144,8 +144,8 @@

 	if (!(group & 1))

 		return 0;

-	return (is_multiple(group, 7) || is_multiple(group, 5) ||

-		is_multiple(group, 3));

+	return (is_power_of(group, 7) || is_power_of(group, 5) ||

+		is_power_of(group, 3));

 }

 bool ext4_sb_is_super_in_bg(struct ext4_sblock *s, uint32_t group)

--- a/lwext4/ext4_super.h

+++ b/lwext4/ext4_super.h

@@ -206,6 +206,8 @@

  * @return  true if block group has superblock*/

 bool ext4_sb_is_super_in_bg(struct ext4_sblock *s, uint32_t block_group);

+bool ext4_sb_sparse(uint32_t group);

+

 /**@brief   TODO:*/

 uint32_t ext4_bg_num_gdb(struct ext4_sblock *s, uint32_t group);