#else
#include <linux/time.h>
#include <linux/fs.h>
-#include <linux/jbd.h>
+#include <linux/jbd2.h>
#include <linux/errno.h>
#include <linux/slab.h>
#endif
{
int err;
unsigned int max, nbufs, next;
- unsigned long blocknr;
+ unsigned long long blocknr;
struct buffer_head *bh;
struct buffer_head * bufs[MAXBUF];
nbufs = 0;
for (next = start; next < max; next++) {
- err = journal_bmap(journal, next, &blocknr);
+ err = jbd2_journal_bmap(journal, next, &blocknr);
if (err) {
printk (KERN_ERR "JBD: bad block at offset %u\n",
unsigned int offset)
{
int err;
- unsigned long blocknr;
+ unsigned long long blocknr;
struct buffer_head *bh;
*bhp = NULL;
return -EIO;
}
- err = journal_bmap(journal, offset, &blocknr);
+ err = jbd2_journal_bmap(journal, offset, &blocknr);
if (err) {
printk (KERN_ERR "JBD: bad block at offset %u\n",
* Count the number of in-use tags in a journal descriptor block.
*/
-static int count_tags(struct buffer_head *bh, int size)
+static int count_tags(journal_t *journal, struct buffer_head *bh)
{
char * tagp;
journal_block_tag_t * tag;
- int nr = 0;
+ int nr = 0, size = journal->j_blocksize;
+ int tag_bytes = journal_tag_bytes(journal);
tagp = &bh->b_data[sizeof(journal_header_t)];
- while ((tagp - bh->b_data + sizeof(journal_block_tag_t)) <= size) {
+ while ((tagp - bh->b_data + tag_bytes) <= size) {
tag = (journal_block_tag_t *) tagp;
nr++;
- tagp += sizeof(journal_block_tag_t);
- if (!(tag->t_flags & cpu_to_be32(JFS_FLAG_SAME_UUID)))
+ tagp += tag_bytes;
+ if (!(tag->t_flags & cpu_to_be32(JBD2_FLAG_SAME_UUID)))
tagp += 16;
- if (tag->t_flags & cpu_to_be32(JFS_FLAG_LAST_TAG))
+ if (tag->t_flags & cpu_to_be32(JBD2_FLAG_LAST_TAG))
break;
}
} while (0)
/**
- * journal_recover - recovers a on-disk journal
+ * jbd2_journal_recover - recovers a on-disk journal
* @journal: the journal to recover
*
* The primary function for recovering the log contents when mounting a
* blocks. In the third and final pass, we replay any un-revoked blocks
* in the log.
*/
-int journal_recover(journal_t *journal)
+int jbd2_journal_recover(journal_t *journal)
{
int err;
journal_superblock_t * sb;
* any existing commit records in the log. */
journal->j_transaction_sequence = ++info.end_transaction;
- journal_clear_revoke(journal);
+ jbd2_journal_clear_revoke(journal);
sync_blockdev(journal->j_fs_dev);
return err;
}
/**
- * journal_skip_recovery - Start journal and wipe exiting records
+ * jbd2_journal_skip_recovery - Start journal and wipe exiting records
* @journal: journal to startup
*
* Locate any valid recovery information from the journal and set up the
* much recovery information is being erased, and to let us initialise
* the journal transaction sequence numbers to the next unused ID.
*/
-int journal_skip_recovery(journal_t *journal)
+int jbd2_journal_skip_recovery(journal_t *journal)
{
int err;
journal_superblock_t * sb;
return err;
}
+static inline unsigned long long read_tag_block(int tag_bytes, journal_block_tag_t *tag)
+{
+ unsigned long long block = be32_to_cpu(tag->t_blocknr);
+ if (tag_bytes > JBD_TAG_SIZE32)
+ block |= (u64)be32_to_cpu(tag->t_blocknr_high) << 32;
+ return block;
+}
+
static int do_one_pass(journal_t *journal,
struct recovery_info *info, enum passtype pass)
{
struct buffer_head * bh;
unsigned int sequence;
int blocktype;
+ int tag_bytes = journal_tag_bytes(journal);
/* Precompute the maximum metadata descriptors in a descriptor block */
int MAX_BLOCKS_PER_DESC;
MAX_BLOCKS_PER_DESC = ((journal->j_blocksize-sizeof(journal_header_t))
- / sizeof(journal_block_tag_t));
+ / tag_bytes);
/*
* First thing is to establish what we expect to find in the log
tmp = (journal_header_t *)bh->b_data;
- if (tmp->h_magic != cpu_to_be32(JFS_MAGIC_NUMBER)) {
+ if (tmp->h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER)) {
brelse(bh);
break;
}
* to do with it? That depends on the pass... */
switch(blocktype) {
- case JFS_DESCRIPTOR_BLOCK:
+ case JBD2_DESCRIPTOR_BLOCK:
/* If it is a valid descriptor block, replay it
* in pass REPLAY; otherwise, just skip over the
* blocks it describes. */
if (pass != PASS_REPLAY) {
- next_log_block +=
- count_tags(bh, journal->j_blocksize);
+ next_log_block += count_tags(journal, bh);
wrap(journal, next_log_block);
brelse(bh);
continue;
* getting done here! */
tagp = &bh->b_data[sizeof(journal_header_t)];
- while ((tagp - bh->b_data +sizeof(journal_block_tag_t))
+ while ((tagp - bh->b_data + tag_bytes)
<= journal->j_blocksize) {
unsigned long io_block;
"block %ld in log\n",
err, io_block);
} else {
- unsigned long blocknr;
+ unsigned long long blocknr;
J_ASSERT(obh != NULL);
- blocknr = be32_to_cpu(tag->t_blocknr);
+ blocknr = read_tag_block(tag_bytes,
+ tag);
/* If the block has been
* revoked, then we're all done
* here. */
- if (journal_test_revoke
+ if (jbd2_journal_test_revoke
(journal, blocknr,
next_commit_ID)) {
brelse(obh);
lock_buffer(nbh);
memcpy(nbh->b_data, obh->b_data,
journal->j_blocksize);
- if (flags & JFS_FLAG_ESCAPE) {
+ if (flags & JBD2_FLAG_ESCAPE) {
*((__be32 *)bh->b_data) =
- cpu_to_be32(JFS_MAGIC_NUMBER);
+ cpu_to_be32(JBD2_MAGIC_NUMBER);
}
BUFFER_TRACE(nbh, "marking dirty");
}
skip_write:
- tagp += sizeof(journal_block_tag_t);
- if (!(flags & JFS_FLAG_SAME_UUID))
+ tagp += tag_bytes;
+ if (!(flags & JBD2_FLAG_SAME_UUID))
tagp += 16;
- if (flags & JFS_FLAG_LAST_TAG)
+ if (flags & JBD2_FLAG_LAST_TAG)
break;
}
brelse(bh);
continue;
- case JFS_COMMIT_BLOCK:
+ case JBD2_COMMIT_BLOCK:
/* Found an expected commit block: not much to
* do other than move on to the next sequence
* number. */
next_commit_ID++;
continue;
- case JFS_REVOKE_BLOCK:
+ case JBD2_REVOKE_BLOCK:
/* If we aren't in the REVOKE pass, then we can
* just skip over this block. */
if (pass != PASS_REVOKE) {
static int scan_revoke_records(journal_t *journal, struct buffer_head *bh,
tid_t sequence, struct recovery_info *info)
{
- journal_revoke_header_t *header;
+ jbd2_journal_revoke_header_t *header;
int offset, max;
+ int record_len = 4;
- header = (journal_revoke_header_t *) bh->b_data;
- offset = sizeof(journal_revoke_header_t);
+ header = (jbd2_journal_revoke_header_t *) bh->b_data;
+ offset = sizeof(jbd2_journal_revoke_header_t);
max = be32_to_cpu(header->r_count);
- while (offset < max) {
- unsigned long blocknr;
+ if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
+ record_len = 8;
+
+ while (offset + record_len <= max) {
+ unsigned long long blocknr;
int err;
- blocknr = be32_to_cpu(* ((__be32 *) (bh->b_data+offset)));
- offset += 4;
- err = journal_set_revoke(journal, blocknr, sequence);
+ if (record_len == 4)
+ blocknr = be32_to_cpu(* ((__be32 *) (bh->b_data+offset)));
+ else
+ blocknr = be64_to_cpu(* ((__be64 *) (bh->b_data+offset)));
+ offset += record_len;
+ err = jbd2_journal_set_revoke(journal, blocknr, sequence);
if (err)
return err;
++info->nr_revokes;