/*
- * linux/fs/ext3/resize.c
+ * linux/fs/ext4/resize.c
*
- * Support for resizing an ext3 filesystem while it is mounted.
+ * Support for resizing an ext4 filesystem while it is mounted.
*
* Copyright (C) 2001, 2002 Andreas Dilger <adilger@clusterfs.com>
*
*/
-#define EXT3FS_DEBUG
+#define EXT4FS_DEBUG
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
-#include <linux/ext3_jbd.h>
+#include <linux/ext4_jbd2.h>
#include <linux/errno.h>
#include <linux/slab.h>
+#include "group.h"
#define outside(b, first, last) ((b) < (first) || (b) >= (last))
#define inside(b, first, last) ((b) >= (first) && (b) < (last))
static int verify_group_input(struct super_block *sb,
- struct ext3_new_group_data *input)
+ struct ext4_new_group_data *input)
{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- struct ext3_super_block *es = sbi->s_es;
- ext3_fsblk_t start = le32_to_cpu(es->s_blocks_count);
- ext3_fsblk_t end = start + input->blocks_count;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_super_block *es = sbi->s_es;
+ ext4_fsblk_t start = ext4_blocks_count(es);
+ ext4_fsblk_t end = start + input->blocks_count;
unsigned group = input->group;
- ext3_fsblk_t itend = input->inode_table + sbi->s_itb_per_group;
- unsigned overhead = ext3_bg_has_super(sb, group) ?
- (1 + ext3_bg_num_gdb(sb, group) +
+ ext4_fsblk_t itend = input->inode_table + sbi->s_itb_per_group;
+ unsigned overhead = ext4_bg_has_super(sb, group) ?
+ (1 + ext4_bg_num_gdb(sb, group) +
le16_to_cpu(es->s_reserved_gdt_blocks)) : 0;
- ext3_fsblk_t metaend = start + overhead;
+ ext4_fsblk_t metaend = start + overhead;
struct buffer_head *bh = NULL;
- ext3_grpblk_t free_blocks_count;
+ ext4_grpblk_t free_blocks_count, offset;
int err = -EINVAL;
input->free_blocks_count = free_blocks_count =
input->blocks_count - 2 - overhead - sbi->s_itb_per_group;
if (test_opt(sb, DEBUG))
- printk(KERN_DEBUG "EXT3-fs: adding %s group %u: %u blocks "
+ printk(KERN_DEBUG "EXT4-fs: adding %s group %u: %u blocks "
"(%d free, %u reserved)\n",
- ext3_bg_has_super(sb, input->group) ? "normal" :
+ ext4_bg_has_super(sb, input->group) ? "normal" :
"no-super", input->group, input->blocks_count,
free_blocks_count, input->reserved_blocks);
+ ext4_get_group_no_and_offset(sb, start, NULL, &offset);
if (group != sbi->s_groups_count)
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"Cannot add at group %u (only %lu groups)",
input->group, sbi->s_groups_count);
- else if ((start - le32_to_cpu(es->s_first_data_block)) %
- EXT3_BLOCKS_PER_GROUP(sb))
- ext3_warning(sb, __FUNCTION__, "Last group not full");
+ else if (offset != 0)
+ ext4_warning(sb, __FUNCTION__, "Last group not full");
else if (input->reserved_blocks > input->blocks_count / 5)
- ext3_warning(sb, __FUNCTION__, "Reserved blocks too high (%u)",
+ ext4_warning(sb, __FUNCTION__, "Reserved blocks too high (%u)",
input->reserved_blocks);
else if (free_blocks_count < 0)
- ext3_warning(sb, __FUNCTION__, "Bad blocks count %u",
+ ext4_warning(sb, __FUNCTION__, "Bad blocks count %u",
input->blocks_count);
else if (!(bh = sb_bread(sb, end - 1)))
- ext3_warning(sb, __FUNCTION__,
- "Cannot read last block ("E3FSBLK")",
+ ext4_warning(sb, __FUNCTION__,
+ "Cannot read last block (%llu)",
end - 1);
else if (outside(input->block_bitmap, start, end))
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap not in group (block %u)",
- input->block_bitmap);
+ ext4_warning(sb, __FUNCTION__,
+ "Block bitmap not in group (block %llu)",
+ (unsigned long long)input->block_bitmap);
else if (outside(input->inode_bitmap, start, end))
- ext3_warning(sb, __FUNCTION__,
- "Inode bitmap not in group (block %u)",
- input->inode_bitmap);
+ ext4_warning(sb, __FUNCTION__,
+ "Inode bitmap not in group (block %llu)",
+ (unsigned long long)input->inode_bitmap);
else if (outside(input->inode_table, start, end) ||
outside(itend - 1, start, end))
- ext3_warning(sb, __FUNCTION__,
- "Inode table not in group (blocks %u-"E3FSBLK")",
- input->inode_table, itend - 1);
+ ext4_warning(sb, __FUNCTION__,
+ "Inode table not in group (blocks %llu-%llu)",
+ (unsigned long long)input->inode_table, itend - 1);
else if (input->inode_bitmap == input->block_bitmap)
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap same as inode bitmap (%u)",
- input->block_bitmap);
+ ext4_warning(sb, __FUNCTION__,
+ "Block bitmap same as inode bitmap (%llu)",
+ (unsigned long long)input->block_bitmap);
else if (inside(input->block_bitmap, input->inode_table, itend))
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap (%u) in inode table (%u-"E3FSBLK")",
- input->block_bitmap, input->inode_table, itend-1);
+ ext4_warning(sb, __FUNCTION__,
+ "Block bitmap (%llu) in inode table (%llu-%llu)",
+ (unsigned long long)input->block_bitmap,
+ (unsigned long long)input->inode_table, itend - 1);
else if (inside(input->inode_bitmap, input->inode_table, itend))
- ext3_warning(sb, __FUNCTION__,
- "Inode bitmap (%u) in inode table (%u-"E3FSBLK")",
- input->inode_bitmap, input->inode_table, itend-1);
+ ext4_warning(sb, __FUNCTION__,
+ "Inode bitmap (%llu) in inode table (%llu-%llu)",
+ (unsigned long long)input->inode_bitmap,
+ (unsigned long long)input->inode_table, itend - 1);
else if (inside(input->block_bitmap, start, metaend))
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap (%u) in GDT table"
- " ("E3FSBLK"-"E3FSBLK")",
- input->block_bitmap, start, metaend - 1);
+ ext4_warning(sb, __FUNCTION__,
+ "Block bitmap (%llu) in GDT table"
+ " (%llu-%llu)",
+ (unsigned long long)input->block_bitmap,
+ start, metaend - 1);
else if (inside(input->inode_bitmap, start, metaend))
- ext3_warning(sb, __FUNCTION__,
- "Inode bitmap (%u) in GDT table"
- " ("E3FSBLK"-"E3FSBLK")",
- input->inode_bitmap, start, metaend - 1);
+ ext4_warning(sb, __FUNCTION__,
+ "Inode bitmap (%llu) in GDT table"
+ " (%llu-%llu)",
+ (unsigned long long)input->inode_bitmap,
+ start, metaend - 1);
else if (inside(input->inode_table, start, metaend) ||
inside(itend - 1, start, metaend))
- ext3_warning(sb, __FUNCTION__,
- "Inode table (%u-"E3FSBLK") overlaps"
- "GDT table ("E3FSBLK"-"E3FSBLK")",
- input->inode_table, itend - 1, start, metaend - 1);
+ ext4_warning(sb, __FUNCTION__,
+ "Inode table (%llu-%llu) overlaps"
+ "GDT table (%llu-%llu)",
+ (unsigned long long)input->inode_table,
+ itend - 1, start, metaend - 1);
else
err = 0;
brelse(bh);
}
static struct buffer_head *bclean(handle_t *handle, struct super_block *sb,
- ext3_fsblk_t blk)
+ ext4_fsblk_t blk)
{
struct buffer_head *bh;
int err;
bh = sb_getblk(sb, blk);
if (!bh)
return ERR_PTR(-EIO);
- if ((err = ext3_journal_get_write_access(handle, bh))) {
+ if ((err = ext4_journal_get_write_access(handle, bh))) {
brelse(bh);
bh = ERR_PTR(err);
} else {
return bh;
}
-/*
- * To avoid calling the atomic setbit hundreds or thousands of times, we only
- * need to use it within a single byte (to ensure we get endianness right).
- * We can use memset for the rest of the bitmap as there are no other users.
- */
-static void mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
-{
- int i;
-
- if (start_bit >= end_bit)
- return;
-
- ext3_debug("mark end bits +%d through +%d used\n", start_bit, end_bit);
- for (i = start_bit; i < ((start_bit + 7) & ~7UL); i++)
- ext3_set_bit(i, bitmap);
- if (i < end_bit)
- memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
-}
-
/*
* Set up the block and inode bitmaps, and the inode table for the new group.
* This doesn't need to be part of the main transaction, since we are only
* If any part of this fails, we simply abort the resize.
*/
static int setup_new_group_blocks(struct super_block *sb,
- struct ext3_new_group_data *input)
+ struct ext4_new_group_data *input)
{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- ext3_fsblk_t start = ext3_group_first_block_no(sb, input->group);
- int reserved_gdb = ext3_bg_has_super(sb, input->group) ?
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ ext4_fsblk_t start = ext4_group_first_block_no(sb, input->group);
+ int reserved_gdb = ext4_bg_has_super(sb, input->group) ?
le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) : 0;
- unsigned long gdblocks = ext3_bg_num_gdb(sb, input->group);
+ unsigned long gdblocks = ext4_bg_num_gdb(sb, input->group);
struct buffer_head *bh;
handle_t *handle;
- ext3_fsblk_t block;
- ext3_grpblk_t bit;
+ ext4_fsblk_t block;
+ ext4_grpblk_t bit;
int i;
int err = 0, err2;
- handle = ext3_journal_start_sb(sb, reserved_gdb + gdblocks +
+ handle = ext4_journal_start_sb(sb, reserved_gdb + gdblocks +
2 + sbi->s_itb_per_group);
if (IS_ERR(handle))
return PTR_ERR(handle);
goto exit_journal;
}
- if (ext3_bg_has_super(sb, input->group)) {
- ext3_debug("mark backup superblock %#04lx (+0)\n", start);
- ext3_set_bit(0, bh->b_data);
+ if (ext4_bg_has_super(sb, input->group)) {
+ ext4_debug("mark backup superblock %#04lx (+0)\n", start);
+ ext4_set_bit(0, bh->b_data);
}
/* Copy all of the GDT blocks into the backup in this group */
i < gdblocks; i++, block++, bit++) {
struct buffer_head *gdb;
- ext3_debug("update backup group %#04lx (+%d)\n", block, bit);
+ ext4_debug("update backup group %#04lx (+%d)\n", block, bit);
gdb = sb_getblk(sb, block);
if (!gdb) {
err = -EIO;
goto exit_bh;
}
- if ((err = ext3_journal_get_write_access(handle, gdb))) {
+ if ((err = ext4_journal_get_write_access(handle, gdb))) {
brelse(gdb);
goto exit_bh;
}
memcpy(gdb->b_data, sbi->s_group_desc[i]->b_data, bh->b_size);
set_buffer_uptodate(gdb);
unlock_buffer(bh);
- ext3_journal_dirty_metadata(handle, gdb);
- ext3_set_bit(bit, bh->b_data);
+ ext4_journal_dirty_metadata(handle, gdb);
+ ext4_set_bit(bit, bh->b_data);
brelse(gdb);
}
i < reserved_gdb; i++, block++, bit++) {
struct buffer_head *gdb;
- ext3_debug("clear reserved block %#04lx (+%d)\n", block, bit);
+ ext4_debug("clear reserved block %#04lx (+%d)\n", block, bit);
if (IS_ERR(gdb = bclean(handle, sb, block))) {
err = PTR_ERR(bh);
goto exit_bh;
}
- ext3_journal_dirty_metadata(handle, gdb);
- ext3_set_bit(bit, bh->b_data);
+ ext4_journal_dirty_metadata(handle, gdb);
+ ext4_set_bit(bit, bh->b_data);
brelse(gdb);
}
- ext3_debug("mark block bitmap %#04x (+%ld)\n", input->block_bitmap,
+ ext4_debug("mark block bitmap %#04x (+%ld)\n", input->block_bitmap,
input->block_bitmap - start);
- ext3_set_bit(input->block_bitmap - start, bh->b_data);
- ext3_debug("mark inode bitmap %#04x (+%ld)\n", input->inode_bitmap,
+ ext4_set_bit(input->block_bitmap - start, bh->b_data);
+ ext4_debug("mark inode bitmap %#04x (+%ld)\n", input->inode_bitmap,
input->inode_bitmap - start);
- ext3_set_bit(input->inode_bitmap - start, bh->b_data);
+ ext4_set_bit(input->inode_bitmap - start, bh->b_data);
/* Zero out all of the inode table blocks */
for (i = 0, block = input->inode_table, bit = block - start;
i < sbi->s_itb_per_group; i++, bit++, block++) {
struct buffer_head *it;
- ext3_debug("clear inode block %#04lx (+%d)\n", block, bit);
+ ext4_debug("clear inode block %#04lx (+%d)\n", block, bit);
if (IS_ERR(it = bclean(handle, sb, block))) {
err = PTR_ERR(it);
goto exit_bh;
}
- ext3_journal_dirty_metadata(handle, it);
+ ext4_journal_dirty_metadata(handle, it);
brelse(it);
- ext3_set_bit(bit, bh->b_data);
+ ext4_set_bit(bit, bh->b_data);
}
- mark_bitmap_end(input->blocks_count, EXT3_BLOCKS_PER_GROUP(sb),
+ mark_bitmap_end(input->blocks_count, EXT4_BLOCKS_PER_GROUP(sb),
bh->b_data);
- ext3_journal_dirty_metadata(handle, bh);
+ ext4_journal_dirty_metadata(handle, bh);
brelse(bh);
/* Mark unused entries in inode bitmap used */
- ext3_debug("clear inode bitmap %#04x (+%ld)\n",
+ ext4_debug("clear inode bitmap %#04x (+%ld)\n",
input->inode_bitmap, input->inode_bitmap - start);
if (IS_ERR(bh = bclean(handle, sb, input->inode_bitmap))) {
err = PTR_ERR(bh);
goto exit_journal;
}
- mark_bitmap_end(EXT3_INODES_PER_GROUP(sb), EXT3_BLOCKS_PER_GROUP(sb),
+ mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), EXT4_BLOCKS_PER_GROUP(sb),
bh->b_data);
- ext3_journal_dirty_metadata(handle, bh);
+ ext4_journal_dirty_metadata(handle, bh);
exit_bh:
brelse(bh);
exit_journal:
unlock_super(sb);
- if ((err2 = ext3_journal_stop(handle)) && !err)
+ if ((err2 = ext4_journal_stop(handle)) && !err)
err = err2;
return err;
}
+
/*
* Iterate through the groups which hold BACKUP superblock/GDT copies in an
- * ext3 filesystem. The counters should be initialized to 1, 5, and 7 before
+ * ext4 filesystem. The counters should be initialized to 1, 5, and 7 before
* calling this for the first time. In a sparse filesystem it will be the
* sequence of powers of 3, 5, and 7: 1, 3, 5, 7, 9, 25, 27, 49, 81, ...
* For a non-sparse filesystem it will be every group: 1, 2, 3, 4, ...
*/
-static unsigned ext3_list_backups(struct super_block *sb, unsigned *three,
+static unsigned ext4_list_backups(struct super_block *sb, unsigned *three,
unsigned *five, unsigned *seven)
{
unsigned *min = three;
int mult = 3;
unsigned ret;
- if (!EXT3_HAS_RO_COMPAT_FEATURE(sb,
- EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
+ if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
ret = *min;
*min += 1;
return ret;
static int verify_reserved_gdb(struct super_block *sb,
struct buffer_head *primary)
{
- const ext3_fsblk_t blk = primary->b_blocknr;
- const unsigned long end = EXT3_SB(sb)->s_groups_count;
+ const ext4_fsblk_t blk = primary->b_blocknr;
+ const unsigned long end = EXT4_SB(sb)->s_groups_count;
unsigned three = 1;
unsigned five = 5;
unsigned seven = 7;
__le32 *p = (__le32 *)primary->b_data;
int gdbackups = 0;
- while ((grp = ext3_list_backups(sb, &three, &five, &seven)) < end) {
- if (le32_to_cpu(*p++) != grp * EXT3_BLOCKS_PER_GROUP(sb) + blk){
- ext3_warning(sb, __FUNCTION__,
- "reserved GDT "E3FSBLK
- " missing grp %d ("E3FSBLK")",
+ while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) {
+ if (le32_to_cpu(*p++) !=
+ grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){
+ ext4_warning(sb, __FUNCTION__,
+ "reserved GDT %llu"
+ " missing grp %d (%llu)",
blk, grp,
- grp * EXT3_BLOCKS_PER_GROUP(sb) + blk);
+ grp *
+ (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) +
+ blk);
return -EINVAL;
}
- if (++gdbackups > EXT3_ADDR_PER_BLOCK(sb))
+ if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb))
return -EFBIG;
}
* fail once we start modifying the data on disk, because JBD has no rollback.
*/
static int add_new_gdb(handle_t *handle, struct inode *inode,
- struct ext3_new_group_data *input,
+ struct ext4_new_group_data *input,
struct buffer_head **primary)
{
struct super_block *sb = inode->i_sb;
- struct ext3_super_block *es = EXT3_SB(sb)->s_es;
- unsigned long gdb_num = input->group / EXT3_DESC_PER_BLOCK(sb);
- ext3_fsblk_t gdblock = EXT3_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num;
+ struct ext4_super_block *es = EXT4_SB(sb)->s_es;
+ unsigned long gdb_num = input->group / EXT4_DESC_PER_BLOCK(sb);
+ ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num;
struct buffer_head **o_group_desc, **n_group_desc;
struct buffer_head *dind;
int gdbackups;
- struct ext3_iloc iloc;
+ struct ext4_iloc iloc;
__le32 *data;
int err;
if (test_opt(sb, DEBUG))
printk(KERN_DEBUG
- "EXT3-fs: ext3_add_new_gdb: adding group block %lu\n",
+ "EXT4-fs: ext4_add_new_gdb: adding group block %lu\n",
gdb_num);
/*
* because the user tools have no way of handling this. Probably a
* bad time to do it anyways.
*/
- if (EXT3_SB(sb)->s_sbh->b_blocknr !=
- le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block)) {
- ext3_warning(sb, __FUNCTION__,
+ if (EXT4_SB(sb)->s_sbh->b_blocknr !=
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) {
+ ext4_warning(sb, __FUNCTION__,
"won't resize using backup superblock at %llu",
- (unsigned long long)EXT3_SB(sb)->s_sbh->b_blocknr);
+ (unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr);
return -EPERM;
}
goto exit_bh;
}
- data = EXT3_I(inode)->i_data + EXT3_DIND_BLOCK;
+ data = EXT4_I(inode)->i_data + EXT4_DIND_BLOCK;
dind = sb_bread(sb, le32_to_cpu(*data));
if (!dind) {
err = -EIO;
}
data = (__le32 *)dind->b_data;
- if (le32_to_cpu(data[gdb_num % EXT3_ADDR_PER_BLOCK(sb)]) != gdblock) {
- ext3_warning(sb, __FUNCTION__,
- "new group %u GDT block "E3FSBLK" not reserved",
+ if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) {
+ ext4_warning(sb, __FUNCTION__,
+ "new group %u GDT block %llu not reserved",
input->group, gdblock);
err = -EINVAL;
goto exit_dind;
}
- if ((err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh)))
+ if ((err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh)))
goto exit_dind;
- if ((err = ext3_journal_get_write_access(handle, *primary)))
+ if ((err = ext4_journal_get_write_access(handle, *primary)))
goto exit_sbh;
- if ((err = ext3_journal_get_write_access(handle, dind)))
+ if ((err = ext4_journal_get_write_access(handle, dind)))
goto exit_primary;
- /* ext3_reserve_inode_write() gets a reference on the iloc */
- if ((err = ext3_reserve_inode_write(handle, inode, &iloc)))
+ /* ext4_reserve_inode_write() gets a reference on the iloc */
+ if ((err = ext4_reserve_inode_write(handle, inode, &iloc)))
goto exit_dindj;
n_group_desc = kmalloc((gdb_num + 1) * sizeof(struct buffer_head *),
GFP_KERNEL);
if (!n_group_desc) {
err = -ENOMEM;
- ext3_warning (sb, __FUNCTION__,
+ ext4_warning (sb, __FUNCTION__,
"not enough memory for %lu groups", gdb_num + 1);
goto exit_inode;
}
* these blocks, because they are marked as in-use from being in the
* reserved inode, and will become GDT blocks (primary and backup).
*/
- data[gdb_num % EXT3_ADDR_PER_BLOCK(sb)] = 0;
- ext3_journal_dirty_metadata(handle, dind);
+ data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0;
+ ext4_journal_dirty_metadata(handle, dind);
brelse(dind);
inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> 9;
- ext3_mark_iloc_dirty(handle, inode, &iloc);
+ ext4_mark_iloc_dirty(handle, inode, &iloc);
memset((*primary)->b_data, 0, sb->s_blocksize);
- ext3_journal_dirty_metadata(handle, *primary);
+ ext4_journal_dirty_metadata(handle, *primary);
- o_group_desc = EXT3_SB(sb)->s_group_desc;
+ o_group_desc = EXT4_SB(sb)->s_group_desc;
memcpy(n_group_desc, o_group_desc,
- EXT3_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
+ EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
n_group_desc[gdb_num] = *primary;
- EXT3_SB(sb)->s_group_desc = n_group_desc;
- EXT3_SB(sb)->s_gdb_count++;
+ EXT4_SB(sb)->s_group_desc = n_group_desc;
+ EXT4_SB(sb)->s_gdb_count++;
kfree(o_group_desc);
es->s_reserved_gdt_blocks =
cpu_to_le16(le16_to_cpu(es->s_reserved_gdt_blocks) - 1);
- ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
+ ext4_journal_dirty_metadata(handle, EXT4_SB(sb)->s_sbh);
return 0;
exit_inode:
- //ext3_journal_release_buffer(handle, iloc.bh);
+ //ext4_journal_release_buffer(handle, iloc.bh);
brelse(iloc.bh);
exit_dindj:
- //ext3_journal_release_buffer(handle, dind);
+ //ext4_journal_release_buffer(handle, dind);
exit_primary:
- //ext3_journal_release_buffer(handle, *primary);
+ //ext4_journal_release_buffer(handle, *primary);
exit_sbh:
- //ext3_journal_release_buffer(handle, *primary);
+ //ext4_journal_release_buffer(handle, *primary);
exit_dind:
brelse(dind);
exit_bh:
brelse(*primary);
- ext3_debug("leaving with error %d\n", err);
+ ext4_debug("leaving with error %d\n", err);
return err;
}
* backup GDT blocks are stored in their reserved primary GDT block.
*/
static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
- struct ext3_new_group_data *input)
+ struct ext4_new_group_data *input)
{
struct super_block *sb = inode->i_sb;
- int reserved_gdb =le16_to_cpu(EXT3_SB(sb)->s_es->s_reserved_gdt_blocks);
+ int reserved_gdb =le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks);
struct buffer_head **primary;
struct buffer_head *dind;
- struct ext3_iloc iloc;
- ext3_fsblk_t blk;
+ struct ext4_iloc iloc;
+ ext4_fsblk_t blk;
__le32 *data, *end;
int gdbackups = 0;
int res, i;
if (!primary)
return -ENOMEM;
- data = EXT3_I(inode)->i_data + EXT3_DIND_BLOCK;
+ data = EXT4_I(inode)->i_data + EXT4_DIND_BLOCK;
dind = sb_bread(sb, le32_to_cpu(*data));
if (!dind) {
err = -EIO;
goto exit_free;
}
- blk = EXT3_SB(sb)->s_sbh->b_blocknr + 1 + EXT3_SB(sb)->s_gdb_count;
- data = (__le32 *)dind->b_data + EXT3_SB(sb)->s_gdb_count;
- end = (__le32 *)dind->b_data + EXT3_ADDR_PER_BLOCK(sb);
+ blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count;
+ data = (__le32 *)dind->b_data + EXT4_SB(sb)->s_gdb_count;
+ end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb);
/* Get each reserved primary GDT block and verify it holds backups */
for (res = 0; res < reserved_gdb; res++, blk++) {
if (le32_to_cpu(*data) != blk) {
- ext3_warning(sb, __FUNCTION__,
- "reserved block "E3FSBLK
+ ext4_warning(sb, __FUNCTION__,
+ "reserved block %llu"
" not at offset %ld",
blk,
(long)(data - (__le32 *)dind->b_data));
}
for (i = 0; i < reserved_gdb; i++) {
- if ((err = ext3_journal_get_write_access(handle, primary[i]))) {
+ if ((err = ext4_journal_get_write_access(handle, primary[i]))) {
/*
int j;
for (j = 0; j < i; j++)
- ext3_journal_release_buffer(handle, primary[j]);
+ ext4_journal_release_buffer(handle, primary[j]);
*/
goto exit_bh;
}
}
- if ((err = ext3_reserve_inode_write(handle, inode, &iloc)))
+ if ((err = ext4_reserve_inode_write(handle, inode, &iloc)))
goto exit_bh;
/*
* Finally we can add each of the reserved backup GDT blocks from
* the new group to its reserved primary GDT block.
*/
- blk = input->group * EXT3_BLOCKS_PER_GROUP(sb);
+ blk = input->group * EXT4_BLOCKS_PER_GROUP(sb);
for (i = 0; i < reserved_gdb; i++) {
int err2;
data = (__le32 *)primary[i]->b_data;
primary[i]->b_blocknr, gdbackups,
blk + primary[i]->b_blocknr); */
data[gdbackups] = cpu_to_le32(blk + primary[i]->b_blocknr);
- err2 = ext3_journal_dirty_metadata(handle, primary[i]);
+ err2 = ext4_journal_dirty_metadata(handle, primary[i]);
if (!err)
err = err2;
}
inode->i_blocks += reserved_gdb * sb->s_blocksize >> 9;
- ext3_mark_iloc_dirty(handle, inode, &iloc);
+ ext4_mark_iloc_dirty(handle, inode, &iloc);
exit_bh:
while (--res >= 0)
}
/*
- * Update the backup copies of the ext3 metadata. These don't need to be part
+ * Update the backup copies of the ext4 metadata. These don't need to be part
* of the main resize transaction, because e2fsck will re-write them if there
* is a problem (basically only OOM will cause a problem). However, we
* _should_ update the backups if possible, in case the primary gets trashed
static void update_backups(struct super_block *sb,
int blk_off, char *data, int size)
{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
const unsigned long last = sbi->s_groups_count;
- const int bpg = EXT3_BLOCKS_PER_GROUP(sb);
+ const int bpg = EXT4_BLOCKS_PER_GROUP(sb);
unsigned three = 1;
unsigned five = 5;
unsigned seven = 7;
handle_t *handle;
int err = 0, err2;
- handle = ext3_journal_start_sb(sb, EXT3_MAX_TRANS_DATA);
+ handle = ext4_journal_start_sb(sb, EXT4_MAX_TRANS_DATA);
if (IS_ERR(handle)) {
group = 1;
err = PTR_ERR(handle);
goto exit_err;
}
- while ((group = ext3_list_backups(sb, &three, &five, &seven)) < last) {
+ while ((group = ext4_list_backups(sb, &three, &five, &seven)) < last) {
struct buffer_head *bh;
/* Out of journal space, and can't get more - abort - so sad */
if (handle->h_buffer_credits == 0 &&
- ext3_journal_extend(handle, EXT3_MAX_TRANS_DATA) &&
- (err = ext3_journal_restart(handle, EXT3_MAX_TRANS_DATA)))
+ ext4_journal_extend(handle, EXT4_MAX_TRANS_DATA) &&
+ (err = ext4_journal_restart(handle, EXT4_MAX_TRANS_DATA)))
break;
bh = sb_getblk(sb, group * bpg + blk_off);
err = -EIO;
break;
}
- ext3_debug("update metadata backup %#04lx\n",
+ ext4_debug("update metadata backup %#04lx\n",
(unsigned long)bh->b_blocknr);
- if ((err = ext3_journal_get_write_access(handle, bh)))
+ if ((err = ext4_journal_get_write_access(handle, bh)))
break;
lock_buffer(bh);
memcpy(bh->b_data, data, size);
memset(bh->b_data + size, 0, rest);
set_buffer_uptodate(bh);
unlock_buffer(bh);
- ext3_journal_dirty_metadata(handle, bh);
+ ext4_journal_dirty_metadata(handle, bh);
brelse(bh);
}
- if ((err2 = ext3_journal_stop(handle)) && !err)
+ if ((err2 = ext4_journal_stop(handle)) && !err)
err = err2;
/*
*/
exit_err:
if (err) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"can't update backup for group %d (err %d), "
"forcing fsck on next reboot", group, err);
- sbi->s_mount_state &= ~EXT3_VALID_FS;
- sbi->s_es->s_state &= cpu_to_le16(~EXT3_VALID_FS);
+ sbi->s_mount_state &= ~EXT4_VALID_FS;
+ sbi->s_es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
mark_buffer_dirty(sbi->s_sbh);
}
}
* not really "added" the group at all. We re-check that we are still
* adding in the last group in case things have changed since verifying.
*/
-int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
+int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- struct ext3_super_block *es = sbi->s_es;
- int reserved_gdb = ext3_bg_has_super(sb, input->group) ?
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_super_block *es = sbi->s_es;
+ int reserved_gdb = ext4_bg_has_super(sb, input->group) ?
le16_to_cpu(es->s_reserved_gdt_blocks) : 0;
struct buffer_head *primary = NULL;
- struct ext3_group_desc *gdp;
+ struct ext4_group_desc *gdp;
struct inode *inode = NULL;
handle_t *handle;
int gdb_off, gdb_num;
int err, err2;
- gdb_num = input->group / EXT3_DESC_PER_BLOCK(sb);
- gdb_off = input->group % EXT3_DESC_PER_BLOCK(sb);
+ gdb_num = input->group / EXT4_DESC_PER_BLOCK(sb);
+ gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb);
- if (gdb_off == 0 && !EXT3_HAS_RO_COMPAT_FEATURE(sb,
- EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- ext3_warning(sb, __FUNCTION__,
+ if (gdb_off == 0 && !EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
+ ext4_warning(sb, __FUNCTION__,
"Can't resize non-sparse filesystem further");
return -EPERM;
}
- if (le32_to_cpu(es->s_blocks_count) + input->blocks_count <
- le32_to_cpu(es->s_blocks_count)) {
- ext3_warning(sb, __FUNCTION__, "blocks_count overflow\n");
+ if (ext4_blocks_count(es) + input->blocks_count <
+ ext4_blocks_count(es)) {
+ ext4_warning(sb, __FUNCTION__, "blocks_count overflow\n");
return -EINVAL;
}
- if (le32_to_cpu(es->s_inodes_count) + EXT3_INODES_PER_GROUP(sb) <
+ if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) <
le32_to_cpu(es->s_inodes_count)) {
- ext3_warning(sb, __FUNCTION__, "inodes_count overflow\n");
+ ext4_warning(sb, __FUNCTION__, "inodes_count overflow\n");
return -EINVAL;
}
if (reserved_gdb || gdb_off == 0) {
- if (!EXT3_HAS_COMPAT_FEATURE(sb,
- EXT3_FEATURE_COMPAT_RESIZE_INODE)){
- ext3_warning(sb, __FUNCTION__,
+ if (!EXT4_HAS_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_COMPAT_RESIZE_INODE)){
+ ext4_warning(sb, __FUNCTION__,
"No reserved GDT blocks, can't resize");
return -EPERM;
}
- inode = iget(sb, EXT3_RESIZE_INO);
+ inode = iget(sb, EXT4_RESIZE_INO);
if (!inode || is_bad_inode(inode)) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"Error opening resize inode");
iput(inode);
return -ENOENT;
* are adding a group with superblock/GDT backups we will also
* modify each of the reserved GDT dindirect blocks.
*/
- handle = ext3_journal_start_sb(sb,
- ext3_bg_has_super(sb, input->group) ?
+ handle = ext4_journal_start_sb(sb,
+ ext4_bg_has_super(sb, input->group) ?
3 + reserved_gdb : 4);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
lock_super(sb);
if (input->group != sbi->s_groups_count) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"multiple resizers run on filesystem!");
err = -EBUSY;
goto exit_journal;
}
- if ((err = ext3_journal_get_write_access(handle, sbi->s_sbh)))
+ if ((err = ext4_journal_get_write_access(handle, sbi->s_sbh)))
goto exit_journal;
/*
*/
if (gdb_off) {
primary = sbi->s_group_desc[gdb_num];
- if ((err = ext3_journal_get_write_access(handle, primary)))
+ if ((err = ext4_journal_get_write_access(handle, primary)))
goto exit_journal;
- if (reserved_gdb && ext3_bg_num_gdb(sb, input->group) &&
+ if (reserved_gdb && ext4_bg_num_gdb(sb, input->group) &&
(err = reserve_backup_gdb(handle, inode, input)))
goto exit_journal;
} else if ((err = add_new_gdb(handle, inode, input, &primary)))
*/
/* Update group descriptor block for new group */
- gdp = (struct ext3_group_desc *)primary->b_data + gdb_off;
+ 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(sb, gdp, input->block_bitmap); /* LV FIXME */
+ ext4_inode_bitmap_set(sb, gdp, input->inode_bitmap); /* LV FIXME */
+ ext4_inode_table_set(sb, 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(EXT3_INODES_PER_GROUP(sb));
+ gdp->bg_free_inodes_count = cpu_to_le16(EXT4_INODES_PER_GROUP(sb));
+ gdp->bg_checksum = ext4_group_desc_csum(sbi, input->group, gdp);
/*
* Make the new blocks and inodes valid next. We do this before
* 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) +
- EXT3_INODES_PER_GROUP(sb));
+ EXT4_INODES_PER_GROUP(sb));
/*
* We need to protect s_groups_count against other CPUs seeing
/* Update the global fs size fields */
sbi->s_groups_count++;
- ext3_journal_dirty_metadata(handle, primary);
+ ext4_journal_dirty_metadata(handle, primary);
/* 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 */
- percpu_counter_mod(&sbi->s_freeblocks_counter,
+ percpu_counter_add(&sbi->s_freeblocks_counter,
input->free_blocks_count);
- percpu_counter_mod(&sbi->s_freeinodes_counter,
- EXT3_INODES_PER_GROUP(sb));
+ percpu_counter_add(&sbi->s_freeinodes_counter,
+ EXT4_INODES_PER_GROUP(sb));
- ext3_journal_dirty_metadata(handle, sbi->s_sbh);
+ ext4_journal_dirty_metadata(handle, sbi->s_sbh);
sb->s_dirt = 1;
exit_journal:
unlock_super(sb);
- if ((err2 = ext3_journal_stop(handle)) && !err)
+ if ((err2 = ext4_journal_stop(handle)) && !err)
err = err2;
if (!err) {
update_backups(sb, sbi->s_sbh->b_blocknr, (char *)es,
- sizeof(struct ext3_super_block));
+ sizeof(struct ext4_super_block));
update_backups(sb, primary->b_blocknr, primary->b_data,
primary->b_size);
}
exit_put:
iput(inode);
return err;
-} /* ext3_group_add */
+} /* ext4_group_add */
/* Extend the filesystem to the new number of blocks specified. This entry
* point is only used to extend the current filesystem to the end of the last
* existing group. It can be accessed via ioctl, or by "remount,resize=<size>"
* for emergencies (because it has no dependencies on reserved blocks).
*
- * If we _really_ wanted, we could use default values to call ext3_group_add()
+ * If we _really_ wanted, we could use default values to call ext4_group_add()
* allow the "remount" trick to work for arbitrary resizing, assuming enough
* GDT blocks are reserved to grow to the desired size.
*/
-int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
- ext3_fsblk_t n_blocks_count)
+int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
+ ext4_fsblk_t n_blocks_count)
{
- ext3_fsblk_t o_blocks_count;
+ ext4_fsblk_t o_blocks_count;
unsigned long o_groups_count;
- ext3_grpblk_t last;
- ext3_grpblk_t add;
+ ext4_grpblk_t last;
+ ext4_grpblk_t add;
struct buffer_head * bh;
handle_t *handle;
int err;
/* 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_groups_count = EXT3_SB(sb)->s_groups_count;
+ o_blocks_count = ext4_blocks_count(es);
+ o_groups_count = EXT4_SB(sb)->s_groups_count;
if (test_opt(sb, DEBUG))
- printk(KERN_DEBUG "EXT3-fs: extending last group from "E3FSBLK" uto "E3FSBLK" blocks\n",
+ printk(KERN_DEBUG "EXT4-fs: extending last group from %llu uto %llu blocks\n",
o_blocks_count, n_blocks_count);
if (n_blocks_count == 0 || n_blocks_count == o_blocks_count)
return 0;
if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) {
- printk(KERN_ERR "EXT3-fs: filesystem on %s:"
- " too large to resize to %lu blocks safely\n",
+ printk(KERN_ERR "EXT4-fs: filesystem on %s:"
+ " too large to resize to %llu blocks safely\n",
sb->s_id, n_blocks_count);
if (sizeof(sector_t) < 8)
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"CONFIG_LBD not enabled\n");
return -EINVAL;
}
if (n_blocks_count < o_blocks_count) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"can't shrink FS - resize aborted");
return -EBUSY;
}
/* Handle the remaining blocks in the last group only. */
- last = (o_blocks_count - le32_to_cpu(es->s_first_data_block)) %
- EXT3_BLOCKS_PER_GROUP(sb);
+ ext4_get_group_no_and_offset(sb, o_blocks_count, NULL, &last);
if (last == 0) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"need to use ext2online to resize further");
return -EPERM;
}
- add = EXT3_BLOCKS_PER_GROUP(sb) - last;
+ add = EXT4_BLOCKS_PER_GROUP(sb) - last;
if (o_blocks_count + add < o_blocks_count) {
- ext3_warning(sb, __FUNCTION__, "blocks_count overflow");
+ ext4_warning(sb, __FUNCTION__, "blocks_count overflow");
return -EINVAL;
}
add = n_blocks_count - o_blocks_count;
if (o_blocks_count + add < n_blocks_count)
- ext3_warning(sb, __FUNCTION__,
- "will only finish group ("E3FSBLK
+ ext4_warning(sb, __FUNCTION__,
+ "will only finish group (%llu"
" blocks, %u new)",
o_blocks_count + add, add);
/* See if the device is actually as big as what was requested */
bh = sb_bread(sb, o_blocks_count + add -1);
if (!bh) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"can't read last block, resize aborted");
return -ENOSPC;
}
brelse(bh);
/* We will update the superblock, one block bitmap, and
- * one group descriptor via ext3_free_blocks().
+ * one group descriptor via ext4_free_blocks().
*/
- handle = ext3_journal_start_sb(sb, 3);
+ handle = ext4_journal_start_sb(sb, 3);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
- ext3_warning(sb, __FUNCTION__, "error %d on journal start",err);
+ ext4_warning(sb, __FUNCTION__, "error %d on journal start",err);
goto exit_put;
}
lock_super(sb);
- if (o_blocks_count != le32_to_cpu(es->s_blocks_count)) {
- ext3_warning(sb, __FUNCTION__,
+ if (o_blocks_count != ext4_blocks_count(es)) {
+ ext4_warning(sb, __FUNCTION__,
"multiple resizers run on filesystem!");
unlock_super(sb);
err = -EBUSY;
goto exit_put;
}
- if ((err = ext3_journal_get_write_access(handle,
- EXT3_SB(sb)->s_sbh))) {
- ext3_warning(sb, __FUNCTION__,
+ if ((err = ext4_journal_get_write_access(handle,
+ EXT4_SB(sb)->s_sbh))) {
+ ext4_warning(sb, __FUNCTION__,
"error %d on journal write access", err);
unlock_super(sb);
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
goto exit_put;
}
- es->s_blocks_count = cpu_to_le32(o_blocks_count + add);
- ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
+ 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);
- ext3_debug("freeing blocks %lu through "E3FSBLK"\n", o_blocks_count,
+ ext4_debug("freeing blocks %lu through %llu\n", o_blocks_count,
o_blocks_count + add);
- ext3_free_blocks_sb(handle, sb, o_blocks_count, add, &freed_blocks);
- ext3_debug("freed blocks "E3FSBLK" through "E3FSBLK"\n", o_blocks_count,
+ ext4_free_blocks_sb(handle, sb, o_blocks_count, add, &freed_blocks);
+ ext4_debug("freed blocks %llu through %llu\n", o_blocks_count,
o_blocks_count + add);
- if ((err = ext3_journal_stop(handle)))
+ if ((err = ext4_journal_stop(handle)))
goto exit_put;
if (test_opt(sb, DEBUG))
- printk(KERN_DEBUG "EXT3-fs: extended group to %u blocks\n",
- le32_to_cpu(es->s_blocks_count));
- update_backups(sb, EXT3_SB(sb)->s_sbh->b_blocknr, (char *)es,
- sizeof(struct ext3_super_block));
+ 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:
return err;
-} /* ext3_group_extend */
+} /* ext4_group_extend */
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff