ext4: Remove (partial, never completed) fragment support
Fragment support in ext2/3/4 was never implemented, and it probably will
never be implemented. So remove it from ext4.
Signed-off-by: Coly Li <coyli@suse.de>
Acked-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index cdee7aa..3baeb99 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -105,20 +105,6 @@
#define EXT4_BLOCK_ALIGN(size, blkbits) ALIGN((size), (1 << (blkbits)))
/*
- * Macro-instructions used to manage fragments
- */
-#define EXT4_MIN_FRAG_SIZE 1024
-#define EXT4_MAX_FRAG_SIZE 4096
-#define EXT4_MIN_FRAG_LOG_SIZE 10
-#ifdef __KERNEL__
-# define EXT4_FRAG_SIZE(s) (EXT4_SB(s)->s_frag_size)
-# define EXT4_FRAGS_PER_BLOCK(s) (EXT4_SB(s)->s_frags_per_block)
-#else
-# define EXT4_FRAG_SIZE(s) (EXT4_MIN_FRAG_SIZE << (s)->s_log_frag_size)
-# define EXT4_FRAGS_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_FRAG_SIZE(s))
-#endif
-
-/*
* Structure of a blocks group descriptor
*/
struct ext4_group_desc
@@ -311,27 +297,24 @@
__le32 i_generation; /* File version (for NFS) */
__le32 i_file_acl; /* File ACL */
__le32 i_dir_acl; /* Directory ACL */
- __le32 i_faddr; /* Fragment address */
+ __le32 i_obso_faddr; /* Obsoleted fragment address */
union {
struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
+ __le16 l_i_reserved1; /* Obsoleted fragment number/size which are removed in ext4 */
__le16 l_i_file_acl_high;
__le16 l_i_uid_high; /* these 2 fields */
__le16 l_i_gid_high; /* were reserved2[0] */
__u32 l_i_reserved2;
} linux2;
struct {
- __u8 h_i_frag; /* Fragment number */
- __u8 h_i_fsize; /* Fragment size */
+ __le16 h_i_reserved1; /* Obsoleted fragment number/size which are removed in ext4 */
__u16 h_i_mode_high;
__u16 h_i_uid_high;
__u16 h_i_gid_high;
__u32 h_i_author;
} hurd2;
struct {
- __u8 m_i_frag; /* Fragment number */
- __u8 m_i_fsize; /* Fragment size */
+ __le16 h_i_reserved1; /* Obsoleted fragment number/size which are removed in ext4 */
__le16 m_i_file_acl_high;
__u32 m_i_reserved2[2];
} masix2;
@@ -419,8 +402,6 @@
#if defined(__KERNEL__) || defined(__linux__)
#define i_reserved1 osd1.linux1.l_i_reserved1
-#define i_frag osd2.linux2.l_i_frag
-#define i_fsize osd2.linux2.l_i_fsize
#define i_file_acl_high osd2.linux2.l_i_file_acl_high
#define i_uid_low i_uid
#define i_gid_low i_gid
@@ -431,8 +412,6 @@
#elif defined(__GNU__)
#define i_translator osd1.hurd1.h_i_translator
-#define i_frag osd2.hurd2.h_i_frag;
-#define i_fsize osd2.hurd2.h_i_fsize;
#define i_uid_high osd2.hurd2.h_i_uid_high
#define i_gid_high osd2.hurd2.h_i_gid_high
#define i_author osd2.hurd2.h_i_author
@@ -440,8 +419,6 @@
#elif defined(__masix__)
#define i_reserved1 osd1.masix1.m_i_reserved1
-#define i_frag osd2.masix2.m_i_frag
-#define i_fsize osd2.masix2.m_i_fsize
#define i_file_acl_high osd2.masix2.m_i_file_acl_high
#define i_reserved2 osd2.masix2.m_i_reserved2
@@ -528,9 +505,9 @@
/*10*/ __le32 s_free_inodes_count; /* Free inodes count */
__le32 s_first_data_block; /* First Data Block */
__le32 s_log_block_size; /* Block size */
- __le32 s_log_frag_size; /* Fragment size */
+ __le32 s_obso_log_frag_size; /* Obsoleted fragment size */
/*20*/ __le32 s_blocks_per_group; /* # Blocks per group */
- __le32 s_frags_per_group; /* # Fragments per group */
+ __le32 s_obso_frags_per_group; /* Obsoleted fragments per group */
__le32 s_inodes_per_group; /* # Inodes per group */
__le32 s_mtime; /* Mount time */
/*30*/ __le32 s_wtime; /* Write time */