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-rw-r--r--fs/ext4/ext4.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ca96401..7f0ff88 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -317,6 +317,13 @@ struct ext4_group_desc
__u32 bg_reserved;
};
+#define EXT4_BG_INODE_BITMAP_CSUM_HI_END \
+ (offsetof(struct ext4_group_desc, bg_inode_bitmap_csum_hi) + \
+ sizeof(__le16))
+#define EXT4_BG_BLOCK_BITMAP_CSUM_HI_END \
+ (offsetof(struct ext4_group_desc, bg_block_bitmap_csum_hi) + \
+ sizeof(__le16))
+
/*
* Structure of a flex block group info
*/
@@ -1844,6 +1851,12 @@ struct mmpd_data {
/* bitmap.c */
extern unsigned int ext4_count_free(struct buffer_head *, unsigned);
+void ext4_inode_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
+ struct ext4_group_desc *gdp,
+ struct buffer_head *bh, int sz);
+int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
+ struct ext4_group_desc *gdp,
+ struct buffer_head *bh, int sz);
/* balloc.c */
extern unsigned int ext4_block_group(struct super_block *sb,
@@ -2094,6 +2107,13 @@ extern __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 group,
extern int ext4_group_desc_csum_verify(struct ext4_sb_info *sbi, __u32 group,
struct ext4_group_desc *gdp);
+static inline int ext4_has_group_desc_csum(struct super_block *sb)
+{
+ return EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
+}
+
static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
{
return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
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