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Subject[RFC 8/13] extents and 48bit ext3: JBD layer in-kernel block variables type fixes
From
Date

JBD layer in-kernel block varibles type fixes to support >32 bit block number
and convert to sector_t type.

Signed-Off-By: Mingming Cao <cmm@us.ibm.com>


---

linux-2.6.16-ming/fs/jbd/commit.c | 2 +-
linux-2.6.16-ming/fs/jbd/journal.c | 16 ++++++++--------
linux-2.6.16-ming/fs/jbd/recovery.c | 8 ++++----
linux-2.6.16-ming/fs/jbd/revoke.c | 24 +++++++++++++-----------
linux-2.6.16-ming/include/linux/ext3_jbd.h | 2 +-
linux-2.6.16-ming/include/linux/jbd.h | 17 ++++++++---------
6 files changed, 35 insertions(+), 34 deletions(-)

diff -puN fs/jbd/commit.c~sector_t-jbd fs/jbd/commit.c
--- linux-2.6.16/fs/jbd/commit.c~sector_t-jbd 2006-06-08 16:29:53.194280561 -0700
+++ linux-2.6.16-ming/fs/jbd/commit.c 2006-06-08 16:29:53.214278280 -0700
@@ -180,7 +180,7 @@ void journal_commit_transaction(journal_
int bufs;
int flags;
int err;
- unsigned long blocknr;
+ sector_t blocknr;
char *tagp = NULL;
journal_header_t *header;
journal_block_tag_t *tag = NULL;
diff -puN fs/jbd/recovery.c~sector_t-jbd fs/jbd/recovery.c
--- linux-2.6.16/fs/jbd/recovery.c~sector_t-jbd 2006-06-08 16:29:53.197280218 -0700
+++ linux-2.6.16-ming/fs/jbd/recovery.c 2006-06-08 16:29:53.215278166 -0700
@@ -70,7 +70,7 @@ static int do_readahead(journal_t *journ
{
int err;
unsigned int max, nbufs, next;
- unsigned long blocknr;
+ sector_t blocknr;
struct buffer_head *bh;

struct buffer_head * bufs[MAXBUF];
@@ -132,7 +132,7 @@ static int jread(struct buffer_head **bh
unsigned int offset)
{
int err;
- unsigned long blocknr;
+ sector_t blocknr;
struct buffer_head *bh;

*bhp = NULL;
@@ -451,7 +451,7 @@ static int do_one_pass(journal_t *journa
"block %ld in log\n",
err, io_block);
} else {
- unsigned long blocknr;
+ sector_t blocknr;

J_ASSERT(obh != NULL);
blocknr = read_split_be64(&tag->t_blocknr_high,
@@ -590,7 +590,7 @@ static int scan_revoke_records(journal_t
record_len = 8;

while (offset + record_len < max) {
- unsigned long blocknr;
+ sector_t blocknr;
int err;

if (record_len == 4)
diff -puN fs/jbd/revoke.c~sector_t-jbd fs/jbd/revoke.c
--- linux-2.6.16/fs/jbd/revoke.c~sector_t-jbd 2006-06-08 16:29:53.200279876 -0700
+++ linux-2.6.16-ming/fs/jbd/revoke.c 2006-06-08 16:29:53.217277937 -0700
@@ -81,7 +81,7 @@ struct jbd_revoke_record_s
{
struct list_head hash;
tid_t sequence; /* Used for recovery only */
- unsigned long blocknr;
+ sector_t blocknr;
};


@@ -106,17 +106,18 @@ static void flush_descriptor(journal_t *
/* Utility functions to maintain the revoke table */

/* Borrowed from buffer.c: this is a tried and tested block hash function */
-static inline int hash(journal_t *journal, unsigned long block)
+static inline int hash(journal_t *journal, sector_t block)
{
struct jbd_revoke_table_s *table = journal->j_revoke;
int hash_shift = table->hash_shift;
+ int hash = (int)block ^ (int)(block >> 32);

- return ((block << (hash_shift - 6)) ^
- (block >> 13) ^
- (block << (hash_shift - 12))) & (table->hash_size - 1);
+ return ((hash << (hash_shift - 6)) ^
+ (hash >> 13) ^
+ (hash << (hash_shift - 12))) & (table->hash_size - 1);
}

-static int insert_revoke_hash(journal_t *journal, unsigned long blocknr,
+static int insert_revoke_hash(journal_t *journal, sector_t blocknr,
tid_t seq)
{
struct list_head *hash_list;
@@ -146,7 +147,7 @@ oom:
/* Find a revoke record in the journal's hash table. */

static struct jbd_revoke_record_s *find_revoke_record(journal_t *journal,
- unsigned long blocknr)
+ sector_t blocknr)
{
struct list_head *hash_list;
struct jbd_revoke_record_s *record;
@@ -325,7 +326,7 @@ void journal_destroy_revoke(journal_t *j
* by one.
*/

-int journal_revoke(handle_t *handle, unsigned long blocknr,
+int journal_revoke(handle_t *handle, sector_t blocknr,
struct buffer_head *bh_in)
{
struct buffer_head *bh = NULL;
@@ -394,7 +395,8 @@ int journal_revoke(handle_t *handle, uns
}
}

- jbd_debug(2, "insert revoke for block %lu, bh_in=%p\n", blocknr, bh_in);
+ jbd_debug(2, "insert revoke for block %llu, bh_in=%p\n",
+ blocknr, bh_in);
err = insert_revoke_hash(journal, blocknr,
handle->h_transaction->t_tid);
BUFFER_TRACE(bh_in, "exit");
@@ -649,7 +651,7 @@ static void flush_descriptor(journal_t *
*/

int journal_set_revoke(journal_t *journal,
- unsigned long blocknr,
+ sector_t blocknr,
tid_t sequence)
{
struct jbd_revoke_record_s *record;
@@ -673,7 +675,7 @@ int journal_set_revoke(journal_t *journa
*/

int journal_test_revoke(journal_t *journal,
- unsigned long blocknr,
+ sector_t blocknr,
tid_t sequence)
{
struct jbd_revoke_record_s *record;
diff -puN include/linux/ext3_jbd.h~sector_t-jbd include/linux/ext3_jbd.h
--- linux-2.6.16/include/linux/ext3_jbd.h~sector_t-jbd 2006-06-08 16:29:53.203279534 -0700
+++ linux-2.6.16-ming/include/linux/ext3_jbd.h 2006-06-08 16:49:48.802939972 -0700
@@ -149,7 +149,7 @@ __ext3_journal_forget(const char *where,

static inline int
__ext3_journal_revoke(const char *where, handle_t *handle,
- unsigned long blocknr, struct buffer_head *bh)
+ ext3_fsblk_t blocknr, struct buffer_head *bh)
{
int err = journal_revoke(handle, blocknr, bh);
if (err)
diff -puN include/linux/jbd.h~sector_t-jbd include/linux/jbd.h
--- linux-2.6.16/include/linux/jbd.h~sector_t-jbd 2006-06-08 16:29:53.207279078 -0700
+++ linux-2.6.16-ming/include/linux/jbd.h 2006-06-08 16:29:53.220277595 -0700
@@ -729,7 +729,7 @@ struct journal_s
*/
struct block_device *j_dev;
int j_blocksize;
- unsigned int j_blk_offset;
+ sector_t j_blk_offset;

/*
* Device which holds the client fs. For internal journal this will be
@@ -848,7 +848,7 @@ extern void __journal_clean_data_list(tr

/* Log buffer allocation */
extern struct journal_head * journal_get_descriptor_buffer(journal_t *);
-int journal_next_log_block(journal_t *, unsigned long *);
+int journal_next_log_block(journal_t *, sector_t *);

/* Commit management */
extern void journal_commit_transaction(journal_t *);
@@ -863,7 +863,7 @@ extern int
journal_write_metadata_buffer(transaction_t *transaction,
struct journal_head *jh_in,
struct journal_head **jh_out,
- int blocknr);
+ sector_t blocknr);

/* Transaction locking */
extern void __wait_on_journal (journal_t *);
@@ -911,7 +911,7 @@ extern void journal_unlock_updates (jou

extern journal_t * journal_init_dev(struct block_device *bdev,
struct block_device *fs_dev,
- int start, int len, int bsize);
+ sector_t start, int len, int bsize);
extern journal_t * journal_init_inode (struct inode *);
extern int journal_update_format (journal_t *);
extern int journal_check_used_features
@@ -932,7 +932,7 @@ extern void journal_abort (journ
extern int journal_errno (journal_t *);
extern void journal_ack_err (journal_t *);
extern int journal_clear_err (journal_t *);
-extern int journal_bmap(journal_t *, unsigned long, unsigned long *);
+extern int journal_bmap(journal_t *, unsigned long, sector_t *);
extern int journal_force_commit(journal_t *);

/*
@@ -965,14 +965,13 @@ extern void journal_destroy_revoke_ca
extern int journal_init_revoke_caches(void);

extern void journal_destroy_revoke(journal_t *);
-extern int journal_revoke (handle_t *,
- unsigned long, struct buffer_head *);
+extern int journal_revoke (handle_t *, sector_t, struct buffer_head *);
extern int journal_cancel_revoke(handle_t *, struct journal_head *);
extern void journal_write_revoke_records(journal_t *, transaction_t *);

/* Recovery revoke support */
-extern int journal_set_revoke(journal_t *, unsigned long, tid_t);
-extern int journal_test_revoke(journal_t *, unsigned long, tid_t);
+extern int journal_set_revoke(journal_t *, sector_t, tid_t);
+extern int journal_test_revoke(journal_t *, sector_t, tid_t);
extern void journal_clear_revoke(journal_t *);
extern void journal_brelse_array(struct buffer_head *b[], int n);
extern void journal_switch_revoke_table(journal_t *journal);
diff -puN fs/jbd/journal.c~sector_t-jbd fs/jbd/journal.c
--- linux-2.6.16/fs/jbd/journal.c~sector_t-jbd 2006-06-08 16:29:53.210278736 -0700
+++ linux-2.6.16-ming/fs/jbd/journal.c 2006-06-08 16:29:53.223277253 -0700
@@ -269,7 +269,7 @@ static void journal_kill_thread(journal_
int journal_write_metadata_buffer(transaction_t *transaction,
struct journal_head *jh_in,
struct journal_head **jh_out,
- int blocknr)
+ sector_t blocknr)
{
int need_copy_out = 0;
int done_copy_out = 0;
@@ -553,7 +553,7 @@ int log_wait_commit(journal_t *journal,
* Log buffer allocation routines:
*/

-int journal_next_log_block(journal_t *journal, unsigned long *retp)
+int journal_next_log_block(journal_t *journal, sector_t *retp)
{
unsigned long blocknr;

@@ -577,10 +577,10 @@ int journal_next_log_block(journal_t *jo
* ready.
*/
int journal_bmap(journal_t *journal, unsigned long blocknr,
- unsigned long *retp)
+ sector_t *retp)
{
int err = 0;
- unsigned long ret;
+ sector_t ret;

if (journal->j_inode) {
ret = bmap(journal->j_inode, blocknr);
@@ -616,7 +616,7 @@ int journal_bmap(journal_t *journal, uns
struct journal_head *journal_get_descriptor_buffer(journal_t *journal)
{
struct buffer_head *bh;
- unsigned long blocknr;
+ sector_t blocknr;
int err;

err = journal_next_log_block(journal, &blocknr);
@@ -704,7 +704,7 @@ fail:
*/
journal_t * journal_init_dev(struct block_device *bdev,
struct block_device *fs_dev,
- int start, int len, int blocksize)
+ sector_t start, int len, int blocksize)
{
journal_t *journal = journal_init_common();
struct buffer_head *bh;
@@ -752,7 +752,7 @@ journal_t * journal_init_inode (struct i
journal_t *journal = journal_init_common();
int err;
int n;
- unsigned long blocknr;
+ sector_t blocknr;

if (!journal)
return NULL;
@@ -852,7 +852,7 @@ static int journal_reset(journal_t *jour
**/
int journal_create(journal_t *journal)
{
- unsigned long blocknr;
+ sector_t blocknr;
struct buffer_head *bh;
journal_superblock_t *sb;
int i, err;
_


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