From f077d0d7ea5d65d01f2ce2e7131e964c13a32433 Mon Sep 17 00:00:00 2001 From: Coly Li Date: Tue, 16 Oct 2007 18:38:25 -0400 Subject: [PATCH] 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 Acked-by: Andreas Dilger Signed-off-by: Andrew Morton Signed-off-by: "Theodore Ts'o" --- fs/ext4/ialloc.c | 5 ----- fs/ext4/inode.c | 10 ---------- fs/ext4/super.c | 15 --------------- include/linux/ext4_fs.h | 35 ++++++----------------------------- include/linux/ext4_fs_i.h | 5 ----- include/linux/ext4_fs_sb.h | 3 --- 6 files changed, 6 insertions(+), 67 deletions(-) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index d0c7793d93..38e9a0a705 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -573,11 +573,6 @@ got: /* dirsync only applies to directories */ if (!S_ISDIR(mode)) ei->i_flags &= ~EXT4_DIRSYNC_FL; -#ifdef EXT4_FRAGMENTS - ei->i_faddr = 0; - ei->i_frag_no = 0; - ei->i_frag_size = 0; -#endif ei->i_file_acl = 0; ei->i_dir_acl = 0; ei->i_dtime = 0; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 0df2b1e06d..1685f6a877 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2711,11 +2711,6 @@ void ext4_read_inode(struct inode * inode) } inode->i_blocks = le32_to_cpu(raw_inode->i_blocks); ei->i_flags = le32_to_cpu(raw_inode->i_flags); -#ifdef EXT4_FRAGMENTS - ei->i_faddr = le32_to_cpu(raw_inode->i_faddr); - ei->i_frag_no = raw_inode->i_frag; - ei->i_frag_size = raw_inode->i_fsize; -#endif ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl); if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != cpu_to_le32(EXT4_OS_HURD)) @@ -2860,11 +2855,6 @@ static int ext4_do_update_inode(handle_t *handle, raw_inode->i_blocks = cpu_to_le32(inode->i_blocks); raw_inode->i_dtime = cpu_to_le32(ei->i_dtime); raw_inode->i_flags = cpu_to_le32(ei->i_flags); -#ifdef EXT4_FRAGMENTS - raw_inode->i_faddr = cpu_to_le32(ei->i_faddr); - raw_inode->i_frag = ei->i_frag_no; - raw_inode->i_fsize = ei->i_frag_size; -#endif if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != cpu_to_le32(EXT4_OS_HURD)) raw_inode->i_file_acl_high = diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 83f9cd358e..e2bdf93693 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1726,14 +1726,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2); } - sbi->s_frag_size = EXT4_MIN_FRAG_SIZE << - le32_to_cpu(es->s_log_frag_size); - if (blocksize != sbi->s_frag_size) { - printk(KERN_ERR - "EXT4-fs: fragsize %lu != blocksize %u (unsupported)\n", - sbi->s_frag_size, blocksize); - goto failed_mount; - } sbi->s_desc_size = le16_to_cpu(es->s_desc_size); if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) { if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || @@ -1747,7 +1739,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) } else sbi->s_desc_size = EXT4_MIN_DESC_SIZE; sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group); - sbi->s_frags_per_group = le32_to_cpu(es->s_frags_per_group); sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group); if (EXT4_INODE_SIZE(sb) == 0) goto cantfind_ext4; @@ -1771,12 +1762,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) sbi->s_blocks_per_group); goto failed_mount; } - if (sbi->s_frags_per_group > blocksize * 8) { - printk (KERN_ERR - "EXT4-fs: #fragments per group too big: %lu\n", - sbi->s_frags_per_group); - goto failed_mount; - } if (sbi->s_inodes_per_group > blocksize * 8) { printk (KERN_ERR "EXT4-fs: #inodes per group too big: %lu\n", diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h index cdee7aaa57..3baeb996fd 100644 --- a/include/linux/ext4_fs.h +++ b/include/linux/ext4_fs.h @@ -104,20 +104,6 @@ #endif #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 */ @@ -311,27 +297,24 @@ struct ext4_inode { __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 @@ do { \ #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 @@ do { \ #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 @@ do { \ #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 @@ struct ext4_super_block { /*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 */ diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h index 1a511e9905..86ddfe2089 100644 --- a/include/linux/ext4_fs_i.h +++ b/include/linux/ext4_fs_i.h @@ -78,11 +78,6 @@ struct ext4_ext_cache { struct ext4_inode_info { __le32 i_data[15]; /* unconverted */ __u32 i_flags; -#ifdef EXT4_FRAGMENTS - __u32 i_faddr; - __u8 i_frag_no; - __u8 i_frag_size; -#endif ext4_fsblk_t i_file_acl; __u32 i_dir_acl; __u32 i_dtime; diff --git a/include/linux/ext4_fs_sb.h b/include/linux/ext4_fs_sb.h index 0a8e47d47c..b40e827cd4 100644 --- a/include/linux/ext4_fs_sb.h +++ b/include/linux/ext4_fs_sb.h @@ -28,11 +28,8 @@ * third extended-fs super-block data in memory */ struct ext4_sb_info { - unsigned long s_frag_size; /* Size of a fragment in bytes */ unsigned long s_desc_size; /* Size of a group descriptor in bytes */ - unsigned long s_frags_per_block;/* Number of fragments per block */ unsigned long s_inodes_per_block;/* Number of inodes per block */ - unsigned long s_frags_per_group;/* Number of fragments in a group */ unsigned long s_blocks_per_group;/* Number of blocks in a group */ unsigned long s_inodes_per_group;/* Number of inodes in a group */ unsigned long s_itb_per_group; /* Number of inode table blocks per group */ -- 2.39.5