diff options
author | Laurent Vivier <Laurent.Vivier@bull.net> | 2006-10-11 01:21:10 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:17 -0700 |
commit | bd81d8eec043094d3ff729a8ff6d5b3a06d3c4b1 (patch) | |
tree | 6813a81b8d8453536839d8bcdc8ed924fdab3f44 /fs | |
parent | a1ddeb7eaecea6a924e3a79aa386797020cb436f (diff) | |
download | linux-bd81d8eec043094d3ff729a8ff6d5b3a06d3c4b1.tar.bz2 |
[PATCH] ext4: 64bit metadata
In-kernel super block changes to support >32 bit free blocks numbers.
Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Alexandre Ratchov <alexandre.ratchov@bull.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/ext4/balloc.c | 50 | ||||
-rw-r--r-- | fs/ext4/ialloc.c | 8 | ||||
-rw-r--r-- | fs/ext4/inode.c | 6 | ||||
-rw-r--r-- | fs/ext4/resize.c | 52 | ||||
-rw-r--r-- | fs/ext4/super.c | 96 |
5 files changed, 128 insertions, 84 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index aa33ff271fa9..6887151ccc47 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -99,12 +99,13 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group) desc = ext4_get_group_desc (sb, block_group, NULL); if (!desc) goto error_out; - bh = sb_bread(sb, le32_to_cpu(desc->bg_block_bitmap)); + bh = sb_bread(sb, ext4_block_bitmap(desc)); if (!bh) ext4_error (sb, "read_block_bitmap", "Cannot read block bitmap - " - "block_group = %d, block_bitmap = %u", - block_group, le32_to_cpu(desc->bg_block_bitmap)); + "block_group = %d, block_bitmap = "E3FSBLK, + block_group, + ext4_block_bitmap(desc)); error_out: return bh; } @@ -432,14 +433,14 @@ void ext4_free_blocks_sb(handle_t *handle, struct super_block *sb, es = sbi->s_es; if (block < le32_to_cpu(es->s_first_data_block) || block + count < block || - block + count > le32_to_cpu(es->s_blocks_count)) { + block + count > ext4_blocks_count(es)) { ext4_error (sb, "ext4_free_blocks", "Freeing blocks not in datazone - " "block = "E3FSBLK", count = %lu", block, count); goto error_return; } - ext4_debug ("freeing block(s) %lu-%lu\n", block, block + count - 1); + ext4_debug ("freeing block(s) %llu-%llu\n", block, block + count - 1); do_more: overflow = 0; @@ -460,12 +461,11 @@ do_more: if (!desc) goto error_return; - if (in_range (le32_to_cpu(desc->bg_block_bitmap), block, count) || - in_range (le32_to_cpu(desc->bg_inode_bitmap), block, count) || - in_range (block, le32_to_cpu(desc->bg_inode_table), - sbi->s_itb_per_group) || - in_range (block + count - 1, le32_to_cpu(desc->bg_inode_table), - sbi->s_itb_per_group)) + if (in_range(ext4_block_bitmap(desc), block, count) || + in_range(ext4_inode_bitmap(desc), block, count) || + in_range(block, ext4_inode_table(desc), sbi->s_itb_per_group) || + in_range(block + count - 1, ext4_inode_table(desc), + sbi->s_itb_per_group)) ext4_error (sb, "ext4_free_blocks", "Freeing blocks in system zones - " "Block = "E3FSBLK", count = %lu", @@ -552,8 +552,8 @@ do_more: bit + i, bitmap_bh->b_data)) { jbd_unlock_bh_state(bitmap_bh); ext4_error(sb, __FUNCTION__, - "bit already cleared for block "E3FSBLK, - block + i); + "bit already cleared for block "E3FSBLK, + (ext4_fsblk_t)(block + i)); jbd_lock_bh_state(bitmap_bh); BUFFER_TRACE(bitmap_bh, "bit already cleared"); } else { @@ -1351,7 +1351,7 @@ static int ext4_has_free_blocks(struct ext4_sb_info *sbi) ext4_fsblk_t free_blocks, root_blocks; free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter); - root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count); + root_blocks = ext4_r_blocks_count(sbi->s_es); if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) && sbi->s_resuid != current->fsuid && (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) { @@ -1462,7 +1462,7 @@ ext4_fsblk_t ext4_new_blocks(handle_t *handle, struct inode *inode, * First, test whether the goal block is free. */ if (goal < le32_to_cpu(es->s_first_data_block) || - goal >= le32_to_cpu(es->s_blocks_count)) + goal >= ext4_blocks_count(es)) goal = le32_to_cpu(es->s_first_data_block); ext4_get_group_no_and_offset(sb, goal, &group_no, &grp_target_blk); goal_group = group_no; @@ -1561,12 +1561,12 @@ allocated: ret_block = grp_alloc_blk + ext4_group_first_block_no(sb, group_no); - if (in_range(le32_to_cpu(gdp->bg_block_bitmap), ret_block, num) || - in_range(le32_to_cpu(gdp->bg_inode_bitmap), ret_block, num) || - in_range(ret_block, le32_to_cpu(gdp->bg_inode_table), - EXT4_SB(sb)->s_itb_per_group) || - in_range(ret_block + num - 1, le32_to_cpu(gdp->bg_inode_table), - EXT4_SB(sb)->s_itb_per_group)) + if (in_range(ext4_block_bitmap(gdp), ret_block, num) || + in_range(ext4_block_bitmap(gdp), ret_block, num) || + in_range(ret_block, ext4_inode_table(gdp), + EXT4_SB(sb)->s_itb_per_group) || + in_range(ret_block + num - 1, ext4_inode_table(gdp), + EXT4_SB(sb)->s_itb_per_group)) ext4_error(sb, "ext4_new_block", "Allocating block in system zone - " "blocks from "E3FSBLK", length %lu", @@ -1604,11 +1604,11 @@ allocated: jbd_unlock_bh_state(bitmap_bh); #endif - if (ret_block + num - 1 >= le32_to_cpu(es->s_blocks_count)) { + if (ret_block + num - 1 >= ext4_blocks_count(es)) { ext4_error(sb, "ext4_new_block", - "block("E3FSBLK") >= blocks count(%d) - " + "block("E3FSBLK") >= blocks count("E3FSBLK") - " "block_group = %lu, es == %p ", ret_block, - le32_to_cpu(es->s_blocks_count), group_no, es); + ext4_blocks_count(es), group_no, es); goto out; } @@ -1707,7 +1707,7 @@ ext4_fsblk_t ext4_count_free_blocks(struct super_block *sb) brelse(bitmap_bh); printk("ext4_count_free_blocks: stored = "E3FSBLK ", computed = "E3FSBLK", "E3FSBLK"\n", - le32_to_cpu(es->s_free_blocks_count), + EXT4_FREE_BLOCKS_COUNT(es), desc_count, bitmap_count); return bitmap_count; #else diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 94e1bb4abe31..959b7fa8f5db 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -60,12 +60,12 @@ read_inode_bitmap(struct super_block * sb, unsigned long block_group) if (!desc) goto error_out; - bh = sb_bread(sb, le32_to_cpu(desc->bg_inode_bitmap)); + bh = sb_bread(sb, ext4_inode_bitmap(desc)); if (!bh) ext4_error(sb, "read_inode_bitmap", "Cannot read inode bitmap - " - "block_group = %lu, inode_bitmap = %u", - block_group, le32_to_cpu(desc->bg_inode_bitmap)); + "block_group = %lu, inode_bitmap = %llu", + block_group, ext4_inode_bitmap(desc)); error_out: return bh; } @@ -304,7 +304,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) goto fallback; } - blocks_per_dir = le32_to_cpu(es->s_blocks_count) - freeb; + blocks_per_dir = ext4_blocks_count(es) - freeb; sector_div(blocks_per_dir, ndirs); max_dirs = ndirs / ngroups + inodes_per_group / 16; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 9db8cff3baa4..effc38afebe3 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2438,8 +2438,8 @@ static ext4_fsblk_t ext4_get_inode_block(struct super_block *sb, */ offset = ((ino - 1) % EXT4_INODES_PER_GROUP(sb)) * EXT4_INODE_SIZE(sb); - block = le32_to_cpu(gdp[desc].bg_inode_table) + - (offset >> EXT4_BLOCK_SIZE_BITS(sb)); + block = ext4_inode_table(gdp + desc) + + (offset >> EXT4_BLOCK_SIZE_BITS(sb)); iloc->block_group = block_group; iloc->offset = offset & (EXT4_BLOCK_SIZE(sb) - 1); @@ -2506,7 +2506,7 @@ static int __ext4_get_inode_loc(struct inode *inode, goto make_io; bitmap_bh = sb_getblk(inode->i_sb, - le32_to_cpu(desc->bg_inode_bitmap)); + ext4_inode_bitmap(desc)); if (!bitmap_bh) goto make_io; diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index c60bfed5f5e7..3dbf91b82202 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -27,7 +27,7 @@ static int verify_group_input(struct super_block *sb, { struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_super_block *es = sbi->s_es; - ext4_fsblk_t start = le32_to_cpu(es->s_blocks_count); + ext4_fsblk_t start = ext4_blocks_count(es); ext4_fsblk_t end = start + input->blocks_count; unsigned group = input->group; ext4_fsblk_t itend = input->inode_table + sbi->s_itb_per_group; @@ -68,43 +68,43 @@ static int verify_group_input(struct super_block *sb, end - 1); else if (outside(input->block_bitmap, start, end)) ext4_warning(sb, __FUNCTION__, - "Block bitmap not in group (block %u)", + "Block bitmap not in group (block %llu)", input->block_bitmap); else if (outside(input->inode_bitmap, start, end)) ext4_warning(sb, __FUNCTION__, - "Inode bitmap not in group (block %u)", + "Inode bitmap not in group (block %llu)", input->inode_bitmap); else if (outside(input->inode_table, start, end) || outside(itend - 1, start, end)) ext4_warning(sb, __FUNCTION__, - "Inode table not in group (blocks %u-"E3FSBLK")", + "Inode table not in group (blocks %llu-%llu)", input->inode_table, itend - 1); else if (input->inode_bitmap == input->block_bitmap) ext4_warning(sb, __FUNCTION__, - "Block bitmap same as inode bitmap (%u)", + "Block bitmap same as inode bitmap (%llu)", input->block_bitmap); else if (inside(input->block_bitmap, input->inode_table, itend)) ext4_warning(sb, __FUNCTION__, - "Block bitmap (%u) in inode table (%u-"E3FSBLK")", + "Block bitmap (%llu) in inode table (%llu-%llu)", input->block_bitmap, input->inode_table, itend-1); else if (inside(input->inode_bitmap, input->inode_table, itend)) ext4_warning(sb, __FUNCTION__, - "Inode bitmap (%u) in inode table (%u-"E3FSBLK")", + "Inode bitmap (%llu) in inode table (%llu-%llu)", input->inode_bitmap, input->inode_table, itend-1); else if (inside(input->block_bitmap, start, metaend)) ext4_warning(sb, __FUNCTION__, - "Block bitmap (%u) in GDT table" + "Block bitmap (%llu) in GDT table" " ("E3FSBLK"-"E3FSBLK")", input->block_bitmap, start, metaend - 1); else if (inside(input->inode_bitmap, start, metaend)) ext4_warning(sb, __FUNCTION__, - "Inode bitmap (%u) in GDT table" + "Inode bitmap (%llu) in GDT table" " ("E3FSBLK"-"E3FSBLK")", input->inode_bitmap, start, metaend - 1); else if (inside(input->inode_table, start, metaend) || inside(itend - 1, start, metaend)) ext4_warning(sb, __FUNCTION__, - "Inode table (%u-"E3FSBLK") overlaps" + "Inode table ("E3FSBLK"-"E3FSBLK") overlaps" "GDT table ("E3FSBLK"-"E3FSBLK")", input->inode_table, itend - 1, start, metaend - 1); else @@ -286,6 +286,7 @@ exit_journal: return err; } + /* * Iterate through the groups which hold BACKUP superblock/GDT copies in an * ext4 filesystem. The counters should be initialized to 1, 5, and 7 before @@ -340,12 +341,15 @@ static int verify_reserved_gdb(struct super_block *sb, int gdbackups = 0; while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) { - if (le32_to_cpu(*p++) != grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ + if (le32_to_cpu(*p++) != + grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ ext4_warning(sb, __FUNCTION__, "reserved GDT "E3FSBLK " missing grp %d ("E3FSBLK")", blk, grp, - grp * EXT4_BLOCKS_PER_GROUP(sb) + blk); + grp * + (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) + + blk); return -EINVAL; } if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb)) @@ -731,8 +735,8 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) return -EPERM; } - if (le32_to_cpu(es->s_blocks_count) + input->blocks_count < - le32_to_cpu(es->s_blocks_count)) { + if (ext4_blocks_count(es) + input->blocks_count < + ext4_blocks_count(es)) { ext4_warning(sb, __FUNCTION__, "blocks_count overflow\n"); return -EINVAL; } @@ -830,9 +834,9 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) /* Update group descriptor block for new group */ gdp = (struct ext4_group_desc *)primary->b_data + gdb_off; - gdp->bg_block_bitmap = cpu_to_le32(input->block_bitmap); - gdp->bg_inode_bitmap = cpu_to_le32(input->inode_bitmap); - gdp->bg_inode_table = cpu_to_le32(input->inode_table); + ext4_block_bitmap_set(gdp, input->block_bitmap); /* LV FIXME */ + ext4_inode_bitmap_set(gdp, input->inode_bitmap); /* LV FIXME */ + ext4_inode_table_set(gdp, input->inode_table); /* LV FIXME */ gdp->bg_free_blocks_count = cpu_to_le16(input->free_blocks_count); gdp->bg_free_inodes_count = cpu_to_le16(EXT4_INODES_PER_GROUP(sb)); @@ -846,7 +850,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) * blocks/inodes before the group is live won't actually let us * allocate the new space yet. */ - es->s_blocks_count = cpu_to_le32(le32_to_cpu(es->s_blocks_count) + + ext4_blocks_count_set(es, ext4_blocks_count(es) + input->blocks_count); es->s_inodes_count = cpu_to_le32(le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb)); @@ -882,7 +886,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) /* Update the reserved block counts only once the new group is * active. */ - es->s_r_blocks_count = cpu_to_le32(le32_to_cpu(es->s_r_blocks_count) + + ext4_r_blocks_count_set(es, ext4_r_blocks_count(es) + input->reserved_blocks); /* Update the free space counts */ @@ -933,7 +937,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, /* We don't need to worry about locking wrt other resizers just * yet: we're going to revalidate es->s_blocks_count after * taking lock_super() below. */ - o_blocks_count = le32_to_cpu(es->s_blocks_count); + o_blocks_count = ext4_blocks_count(es); o_groups_count = EXT4_SB(sb)->s_groups_count; if (test_opt(sb, DEBUG)) @@ -1004,7 +1008,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, } lock_super(sb); - if (o_blocks_count != le32_to_cpu(es->s_blocks_count)) { + if (o_blocks_count != ext4_blocks_count(es)) { ext4_warning(sb, __FUNCTION__, "multiple resizers run on filesystem!"); unlock_super(sb); @@ -1020,7 +1024,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, ext4_journal_stop(handle); goto exit_put; } - es->s_blocks_count = cpu_to_le32(o_blocks_count + add); + ext4_blocks_count_set(es, o_blocks_count + add); ext4_journal_dirty_metadata(handle, EXT4_SB(sb)->s_sbh); sb->s_dirt = 1; unlock_super(sb); @@ -1032,8 +1036,8 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, if ((err = ext4_journal_stop(handle))) goto exit_put; if (test_opt(sb, DEBUG)) - printk(KERN_DEBUG "EXT4-fs: extended group to %u blocks\n", - le32_to_cpu(es->s_blocks_count)); + printk(KERN_DEBUG "EXT4-fs: extended group to %llu blocks\n", + ext4_blocks_count(es)); update_backups(sb, EXT4_SB(sb)->s_sbh->b_blocknr, (char *)es, sizeof(struct ext4_super_block)); exit_put: diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1d12e4f7d69f..b91dffd7a031 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -62,6 +62,43 @@ static void ext4_unlockfs(struct super_block *sb); static void ext4_write_super (struct super_block * sb); static void ext4_write_super_lockfs(struct super_block *sb); + +ext4_fsblk_t ext4_block_bitmap(struct ext4_group_desc *bg) +{ + return le32_to_cpu(bg->bg_block_bitmap) | + ((ext4_fsblk_t)le16_to_cpu(bg->bg_block_bitmap_hi) << 32); +} + +ext4_fsblk_t ext4_inode_bitmap(struct ext4_group_desc *bg) +{ + return le32_to_cpu(bg->bg_inode_bitmap) | + ((ext4_fsblk_t)le16_to_cpu(bg->bg_inode_bitmap_hi) << 32); +} + +ext4_fsblk_t ext4_inode_table(struct ext4_group_desc *bg) +{ + return le32_to_cpu(bg->bg_inode_table) | + ((ext4_fsblk_t)le16_to_cpu(bg->bg_inode_table_hi) << 32); +} + +void ext4_block_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk) +{ + bg->bg_block_bitmap = cpu_to_le32((u32)blk); + bg->bg_block_bitmap_hi = cpu_to_le16(blk >> 32); +} + +void ext4_inode_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk) +{ + bg->bg_inode_bitmap = cpu_to_le32((u32)blk); + bg->bg_inode_bitmap_hi = cpu_to_le16(blk >> 32); +} + +void ext4_inode_table_set(struct ext4_group_desc *bg, ext4_fsblk_t blk) +{ + bg->bg_inode_table = cpu_to_le32((u32)blk); + bg->bg_inode_table_hi = cpu_to_le16(blk >> 32); +} + /* * Wrappers for jbd2_journal_start/end. * @@ -1182,6 +1219,9 @@ static int ext4_check_descriptors (struct super_block * sb) struct ext4_sb_info *sbi = EXT4_SB(sb); ext4_fsblk_t first_block = le32_to_cpu(sbi->s_es->s_first_data_block); ext4_fsblk_t last_block; + ext4_fsblk_t block_bitmap; + ext4_fsblk_t inode_bitmap; + ext4_fsblk_t inode_table; struct ext4_group_desc * gdp = NULL; int desc_block = 0; int i; @@ -1191,7 +1231,7 @@ static int ext4_check_descriptors (struct super_block * sb) for (i = 0; i < sbi->s_groups_count; i++) { if (i == sbi->s_groups_count - 1) - last_block = le32_to_cpu(sbi->s_es->s_blocks_count) - 1; + last_block = ext4_blocks_count(sbi->s_es) - 1; else last_block = first_block + (EXT4_BLOCKS_PER_GROUP(sb) - 1); @@ -1199,42 +1239,39 @@ static int ext4_check_descriptors (struct super_block * sb) if ((i % EXT4_DESC_PER_BLOCK(sb)) == 0) gdp = (struct ext4_group_desc *) sbi->s_group_desc[desc_block++]->b_data; - if (le32_to_cpu(gdp->bg_block_bitmap) < first_block || - le32_to_cpu(gdp->bg_block_bitmap) > last_block) + block_bitmap = ext4_block_bitmap(gdp); + if (block_bitmap < first_block || block_bitmap > last_block) { ext4_error (sb, "ext4_check_descriptors", "Block bitmap for group %d" - " not in group (block %lu)!", - i, (unsigned long) - le32_to_cpu(gdp->bg_block_bitmap)); + " not in group (block "E3FSBLK")!", + i, block_bitmap); return 0; } - if (le32_to_cpu(gdp->bg_inode_bitmap) < first_block || - le32_to_cpu(gdp->bg_inode_bitmap) > last_block) + inode_bitmap = ext4_inode_bitmap(gdp); + if (inode_bitmap < first_block || inode_bitmap > last_block) { ext4_error (sb, "ext4_check_descriptors", "Inode bitmap for group %d" - " not in group (block %lu)!", - i, (unsigned long) - le32_to_cpu(gdp->bg_inode_bitmap)); + " not in group (block "E3FSBLK")!", + i, inode_bitmap); return 0; } - if (le32_to_cpu(gdp->bg_inode_table) < first_block || - le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group > - last_block) + inode_table = ext4_inode_table(gdp); + if (inode_table < first_block || + inode_table + sbi->s_itb_per_group > last_block) { ext4_error (sb, "ext4_check_descriptors", "Inode table for group %d" - " not in group (block %lu)!", - i, (unsigned long) - le32_to_cpu(gdp->bg_inode_table)); + " not in group (block "E3FSBLK")!", + i, inode_table); return 0; } first_block += EXT4_BLOCKS_PER_GROUP(sb); gdp++; } - sbi->s_es->s_free_blocks_count=cpu_to_le32(ext4_count_free_blocks(sb)); + ext4_free_blocks_count_set(sbi->s_es, ext4_count_free_blocks(sb)); sbi->s_es->s_free_inodes_count=cpu_to_le32(ext4_count_free_inodes(sb)); return 1; } @@ -1411,6 +1448,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) int i; int needs_recovery; __le32 features; + __u64 blocks_count; sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) @@ -1620,7 +1658,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) goto failed_mount; } - if (le32_to_cpu(es->s_blocks_count) > + if (ext4_blocks_count(es) > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { printk(KERN_ERR "EXT4-fs: filesystem on %s:" " too large to mount safely\n", sb->s_id); @@ -1632,9 +1670,11 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) if (EXT4_BLOCKS_PER_GROUP(sb) == 0) goto cantfind_ext4; - sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) - - le32_to_cpu(es->s_first_data_block) - 1) - / EXT4_BLOCKS_PER_GROUP(sb)) + 1; + blocks_count = (ext4_blocks_count(es) - + le32_to_cpu(es->s_first_data_block) + + EXT4_BLOCKS_PER_GROUP(sb) - 1); + do_div(blocks_count, EXT4_BLOCKS_PER_GROUP(sb)); + sbi->s_groups_count = blocks_count; db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *), @@ -1949,7 +1989,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, goto out_bdev; } - len = le32_to_cpu(es->s_blocks_count); + len = ext4_blocks_count(es); start = sb_block + 1; brelse(bh); /* we're done with the superblock */ @@ -2119,7 +2159,7 @@ static void ext4_commit_super (struct super_block * sb, if (!sbh) return; es->s_wtime = cpu_to_le32(get_seconds()); - es->s_free_blocks_count = cpu_to_le32(ext4_count_free_blocks(sb)); + ext4_free_blocks_count_set(es, ext4_count_free_blocks(sb)); es->s_free_inodes_count = cpu_to_le32(ext4_count_free_inodes(sb)); BUFFER_TRACE(sbh, "marking dirty"); mark_buffer_dirty(sbh); @@ -2312,7 +2352,7 @@ static int ext4_remount (struct super_block * sb, int * flags, char * data) ext4_init_journal_params(sb, sbi->s_journal); if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) || - n_blocks_count > le32_to_cpu(es->s_blocks_count)) { + n_blocks_count > ext4_blocks_count(es)) { if (sbi->s_mount_opt & EXT4_MOUNT_ABORT) { err = -EROFS; goto restore_opts; @@ -2431,10 +2471,10 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) buf->f_type = EXT4_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; - buf->f_blocks = le32_to_cpu(es->s_blocks_count) - overhead; + buf->f_blocks = ext4_blocks_count(es) - overhead; buf->f_bfree = percpu_counter_sum(&sbi->s_freeblocks_counter); - buf->f_bavail = buf->f_bfree - le32_to_cpu(es->s_r_blocks_count); - if (buf->f_bfree < le32_to_cpu(es->s_r_blocks_count)) + buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es); + if (buf->f_bfree < ext4_r_blocks_count(es)) buf->f_bavail = 0; buf->f_files = le32_to_cpu(es->s_inodes_count); buf->f_ffree = percpu_counter_sum(&sbi->s_freeinodes_counter); |