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-rw-r--r--fs/jbd/checkpoint.c6
-rw-r--r--fs/jbd/commit.c2
-rw-r--r--fs/jbd/journal.c54
-rw-r--r--fs/jbd/recovery.c18
-rw-r--r--fs/jbd/revoke.c16
-rw-r--r--fs/jbd/transaction.c77
6 files changed, 92 insertions, 81 deletions
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 61f32f3868c..b0435dd0654 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -456,7 +456,7 @@ int cleanup_journal_tail(journal_t *journal)
{
transaction_t * transaction;
tid_t first_tid;
- unsigned long blocknr, freed;
+ unsigned int blocknr, freed;
if (is_journal_aborted(journal))
return 1;
@@ -502,8 +502,8 @@ int cleanup_journal_tail(journal_t *journal)
freed = freed + journal->j_last - journal->j_first;
jbd_debug(1,
- "Cleaning journal tail from %d to %d (offset %lu), "
- "freeing %lu\n",
+ "Cleaning journal tail from %d to %d (offset %u), "
+ "freeing %u\n",
journal->j_tail_sequence, first_tid, blocknr, freed);
journal->j_free += freed;
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 618e21c0b7a..4bd882548c4 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -308,7 +308,7 @@ void journal_commit_transaction(journal_t *journal)
int bufs;
int flags;
int err;
- unsigned long blocknr;
+ unsigned int blocknr;
ktime_t start_time;
u64 commit_time;
char *tagp = NULL;
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 737f7246a4b..bd3c073b485 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -276,7 +276,7 @@ static void journal_kill_thread(journal_t *journal)
int journal_write_metadata_buffer(transaction_t *transaction,
struct journal_head *jh_in,
struct journal_head **jh_out,
- unsigned long blocknr)
+ unsigned int blocknr)
{
int need_copy_out = 0;
int done_copy_out = 0;
@@ -287,6 +287,7 @@ int journal_write_metadata_buffer(transaction_t *transaction,
struct page *new_page;
unsigned int new_offset;
struct buffer_head *bh_in = jh2bh(jh_in);
+ journal_t *journal = transaction->t_journal;
/*
* The buffer really shouldn't be locked: only the current committing
@@ -300,6 +301,11 @@ int journal_write_metadata_buffer(transaction_t *transaction,
J_ASSERT_BH(bh_in, buffer_jbddirty(bh_in));
new_bh = alloc_buffer_head(GFP_NOFS|__GFP_NOFAIL);
+ /* keep subsequent assertions sane */
+ new_bh->b_state = 0;
+ init_buffer(new_bh, NULL, NULL);
+ atomic_set(&new_bh->b_count, 1);
+ new_jh = journal_add_journal_head(new_bh); /* This sleeps */
/*
* If a new transaction has already done a buffer copy-out, then
@@ -361,14 +367,6 @@ repeat:
kunmap_atomic(mapped_data, KM_USER0);
}
- /* keep subsequent assertions sane */
- new_bh->b_state = 0;
- init_buffer(new_bh, NULL, NULL);
- atomic_set(&new_bh->b_count, 1);
- jbd_unlock_bh_state(bh_in);
-
- new_jh = journal_add_journal_head(new_bh); /* This sleeps */
-
set_bh_page(new_bh, new_page, new_offset);
new_jh->b_transaction = NULL;
new_bh->b_size = jh2bh(jh_in)->b_size;
@@ -385,7 +383,11 @@ repeat:
* copying is moved to the transaction's shadow queue.
*/
JBUFFER_TRACE(jh_in, "file as BJ_Shadow");
- journal_file_buffer(jh_in, transaction, BJ_Shadow);
+ spin_lock(&journal->j_list_lock);
+ __journal_file_buffer(jh_in, transaction, BJ_Shadow);
+ spin_unlock(&journal->j_list_lock);
+ jbd_unlock_bh_state(bh_in);
+
JBUFFER_TRACE(new_jh, "file as BJ_IO");
journal_file_buffer(new_jh, transaction, BJ_IO);
@@ -565,9 +567,9 @@ int log_wait_commit(journal_t *journal, tid_t tid)
* Log buffer allocation routines:
*/
-int journal_next_log_block(journal_t *journal, unsigned long *retp)
+int journal_next_log_block(journal_t *journal, unsigned int *retp)
{
- unsigned long blocknr;
+ unsigned int blocknr;
spin_lock(&journal->j_state_lock);
J_ASSERT(journal->j_free > 1);
@@ -588,11 +590,11 @@ int journal_next_log_block(journal_t *journal, unsigned long *retp)
* this is a no-op. If needed, we can use j_blk_offset - everything is
* ready.
*/
-int journal_bmap(journal_t *journal, unsigned long blocknr,
- unsigned long *retp)
+int journal_bmap(journal_t *journal, unsigned int blocknr,
+ unsigned int *retp)
{
int err = 0;
- unsigned long ret;
+ unsigned int ret;
if (journal->j_inode) {
ret = bmap(journal->j_inode, blocknr);
@@ -602,7 +604,7 @@ int journal_bmap(journal_t *journal, unsigned long blocknr,
char b[BDEVNAME_SIZE];
printk(KERN_ALERT "%s: journal block not found "
- "at offset %lu on %s\n",
+ "at offset %u on %s\n",
__func__,
blocknr,
bdevname(journal->j_dev, b));
@@ -628,7 +630,7 @@ int journal_bmap(journal_t *journal, unsigned long blocknr,
struct journal_head *journal_get_descriptor_buffer(journal_t *journal)
{
struct buffer_head *bh;
- unsigned long blocknr;
+ unsigned int blocknr;
int err;
err = journal_next_log_block(journal, &blocknr);
@@ -772,7 +774,7 @@ journal_t * journal_init_inode (struct inode *inode)
journal_t *journal = journal_init_common();
int err;
int n;
- unsigned long blocknr;
+ unsigned int blocknr;
if (!journal)
return NULL;
@@ -844,10 +846,16 @@ static void journal_fail_superblock (journal_t *journal)
static int journal_reset(journal_t *journal)
{
journal_superblock_t *sb = journal->j_superblock;
- unsigned long first, last;
+ unsigned int first, last;
first = be32_to_cpu(sb->s_first);
last = be32_to_cpu(sb->s_maxlen);
+ if (first + JFS_MIN_JOURNAL_BLOCKS > last + 1) {
+ printk(KERN_ERR "JBD: Journal too short (blocks %u-%u).\n",
+ first, last);
+ journal_fail_superblock(journal);
+ return -EINVAL;
+ }
journal->j_first = first;
journal->j_last = last;
@@ -877,7 +885,7 @@ static int journal_reset(journal_t *journal)
**/
int journal_create(journal_t *journal)
{
- unsigned long blocknr;
+ unsigned int blocknr;
struct buffer_head *bh;
journal_superblock_t *sb;
int i, err;
@@ -961,14 +969,14 @@ void journal_update_superblock(journal_t *journal, int wait)
if (sb->s_start == 0 && journal->j_tail_sequence ==
journal->j_transaction_sequence) {
jbd_debug(1,"JBD: Skipping superblock update on recovered sb "
- "(start %ld, seq %d, errno %d)\n",
+ "(start %u, seq %d, errno %d)\n",
journal->j_tail, journal->j_tail_sequence,
journal->j_errno);
goto out;
}
spin_lock(&journal->j_state_lock);
- jbd_debug(1,"JBD: updating superblock (start %ld, seq %d, errno %d)\n",
+ jbd_debug(1,"JBD: updating superblock (start %u, seq %d, errno %d)\n",
journal->j_tail, journal->j_tail_sequence, journal->j_errno);
sb->s_sequence = cpu_to_be32(journal->j_tail_sequence);
@@ -1363,7 +1371,7 @@ int journal_flush(journal_t *journal)
{
int err = 0;
transaction_t *transaction = NULL;
- unsigned long old_tail;
+ unsigned int old_tail;
spin_lock(&journal->j_state_lock);
diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c
index db5e982c5dd..cb1a49ae605 100644
--- a/fs/jbd/recovery.c
+++ b/fs/jbd/recovery.c
@@ -70,7 +70,7 @@ static int do_readahead(journal_t *journal, unsigned int start)
{
int err;
unsigned int max, nbufs, next;
- unsigned long blocknr;
+ unsigned int blocknr;
struct buffer_head *bh;
struct buffer_head * bufs[MAXBUF];
@@ -132,7 +132,7 @@ static int jread(struct buffer_head **bhp, journal_t *journal,
unsigned int offset)
{
int err;
- unsigned long blocknr;
+ unsigned int blocknr;
struct buffer_head *bh;
*bhp = NULL;
@@ -314,7 +314,7 @@ static int do_one_pass(journal_t *journal,
struct recovery_info *info, enum passtype pass)
{
unsigned int first_commit_ID, next_commit_ID;
- unsigned long next_log_block;
+ unsigned int next_log_block;
int err, success = 0;
journal_superblock_t * sb;
journal_header_t * tmp;
@@ -367,14 +367,14 @@ static int do_one_pass(journal_t *journal,
if (tid_geq(next_commit_ID, info->end_transaction))
break;
- jbd_debug(2, "Scanning for sequence ID %u at %lu/%lu\n",
+ jbd_debug(2, "Scanning for sequence ID %u at %u/%u\n",
next_commit_ID, next_log_block, journal->j_last);
/* Skip over each chunk of the transaction looking
* either the next descriptor block or the final commit
* record. */
- jbd_debug(3, "JBD: checking block %ld\n", next_log_block);
+ jbd_debug(3, "JBD: checking block %u\n", next_log_block);
err = jread(&bh, journal, next_log_block);
if (err)
goto failed;
@@ -429,7 +429,7 @@ static int do_one_pass(journal_t *journal,
tagp = &bh->b_data[sizeof(journal_header_t)];
while ((tagp - bh->b_data +sizeof(journal_block_tag_t))
<= journal->j_blocksize) {
- unsigned long io_block;
+ unsigned int io_block;
tag = (journal_block_tag_t *) tagp;
flags = be32_to_cpu(tag->t_flags);
@@ -443,10 +443,10 @@ static int do_one_pass(journal_t *journal,
success = err;
printk (KERN_ERR
"JBD: IO error %d recovering "
- "block %ld in log\n",
+ "block %u in log\n",
err, io_block);
} else {
- unsigned long blocknr;
+ unsigned int blocknr;
J_ASSERT(obh != NULL);
blocknr = be32_to_cpu(tag->t_blocknr);
@@ -581,7 +581,7 @@ static int scan_revoke_records(journal_t *journal, struct buffer_head *bh,
max = be32_to_cpu(header->r_count);
while (offset < max) {
- unsigned long blocknr;
+ unsigned int blocknr;
int err;
blocknr = be32_to_cpu(* ((__be32 *) (bh->b_data+offset)));
diff --git a/fs/jbd/revoke.c b/fs/jbd/revoke.c
index da6cd9bdaab..ad717328343 100644
--- a/fs/jbd/revoke.c
+++ b/fs/jbd/revoke.c
@@ -101,7 +101,7 @@ struct jbd_revoke_record_s
{
struct list_head hash;
tid_t sequence; /* Used for recovery only */
- unsigned long blocknr;
+ unsigned int blocknr;
};
@@ -126,7 +126,7 @@ static void flush_descriptor(journal_t *, struct journal_head *, int, int);
/* 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, unsigned int block)
{
struct jbd_revoke_table_s *table = journal->j_revoke;
int hash_shift = table->hash_shift;
@@ -136,7 +136,7 @@ static inline int hash(journal_t *journal, unsigned long block)
(block << (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, unsigned int blocknr,
tid_t seq)
{
struct list_head *hash_list;
@@ -166,7 +166,7 @@ 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)
+ unsigned int blocknr)
{
struct list_head *hash_list;
struct jbd_revoke_record_s *record;
@@ -332,7 +332,7 @@ void journal_destroy_revoke(journal_t *journal)
* by one.
*/
-int journal_revoke(handle_t *handle, unsigned long blocknr,
+int journal_revoke(handle_t *handle, unsigned int blocknr,
struct buffer_head *bh_in)
{
struct buffer_head *bh = NULL;
@@ -401,7 +401,7 @@ int journal_revoke(handle_t *handle, unsigned long blocknr,
}
}
- jbd_debug(2, "insert revoke for block %lu, bh_in=%p\n", blocknr, bh_in);
+ jbd_debug(2, "insert revoke for block %u, bh_in=%p\n", blocknr, bh_in);
err = insert_revoke_hash(journal, blocknr,
handle->h_transaction->t_tid);
BUFFER_TRACE(bh_in, "exit");
@@ -644,7 +644,7 @@ static void flush_descriptor(journal_t *journal,
*/
int journal_set_revoke(journal_t *journal,
- unsigned long blocknr,
+ unsigned int blocknr,
tid_t sequence)
{
struct jbd_revoke_record_s *record;
@@ -668,7 +668,7 @@ int journal_set_revoke(journal_t *journal,
*/
int journal_test_revoke(journal_t *journal,
- unsigned long blocknr,
+ unsigned int blocknr,
tid_t sequence)
{
struct jbd_revoke_record_s *record;
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 73242ba7c7b..006f9ad838a 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -56,7 +56,8 @@ get_transaction(journal_t *journal, transaction_t *transaction)
spin_lock_init(&transaction->t_handle_lock);
/* Set up the commit timer for the new transaction. */
- journal->j_commit_timer.expires = round_jiffies(transaction->t_expires);
+ journal->j_commit_timer.expires =
+ round_jiffies_up(transaction->t_expires);
add_timer(&journal->j_commit_timer);
J_ASSERT(journal->j_running_transaction == NULL);
@@ -228,6 +229,8 @@ repeat_locked:
__log_space_left(journal));
spin_unlock(&transaction->t_handle_lock);
spin_unlock(&journal->j_state_lock);
+
+ lock_map_acquire(&handle->h_lockdep_map);
out:
if (unlikely(new_transaction)) /* It's usually NULL */
kfree(new_transaction);
@@ -292,9 +295,6 @@ handle_t *journal_start(journal_t *journal, int nblocks)
handle = ERR_PTR(err);
goto out;
}
-
- lock_map_acquire(&handle->h_lockdep_map);
-
out:
return handle;
}
@@ -416,6 +416,7 @@ int journal_restart(handle_t *handle, int nblocks)
__log_start_commit(journal, transaction->t_tid);
spin_unlock(&journal->j_state_lock);
+ lock_map_release(&handle->h_lockdep_map);
handle->h_buffer_credits = nblocks;
ret = start_this_handle(journal, handle);
return ret;
@@ -489,34 +490,15 @@ void journal_unlock_updates (journal_t *journal)
wake_up(&journal->j_wait_transaction_locked);
}
-/*
- * Report any unexpected dirty buffers which turn up. Normally those
- * indicate an error, but they can occur if the user is running (say)
- * tune2fs to modify the live filesystem, so we need the option of
- * continuing as gracefully as possible. #
- *
- * The caller should already hold the journal lock and
- * j_list_lock spinlock: most callers will need those anyway
- * in order to probe the buffer's journaling state safely.
- */
-static void jbd_unexpected_dirty_buffer(struct journal_head *jh)
+static void warn_dirty_buffer(struct buffer_head *bh)
{
- int jlist;
-
- /* If this buffer is one which might reasonably be dirty
- * --- ie. data, or not part of this journal --- then
- * we're OK to leave it alone, but otherwise we need to
- * move the dirty bit to the journal's own internal
- * JBDDirty bit. */
- jlist = jh->b_jlist;
-
- if (jlist == BJ_Metadata || jlist == BJ_Reserved ||
- jlist == BJ_Shadow || jlist == BJ_Forget) {
- struct buffer_head *bh = jh2bh(jh);
+ char b[BDEVNAME_SIZE];
- if (test_clear_buffer_dirty(bh))
- set_buffer_jbddirty(bh);
- }
+ printk(KERN_WARNING
+ "JBD: Spotted dirty metadata buffer (dev = %s, blocknr = %llu). "
+ "There's a risk of filesystem corruption in case of system "
+ "crash.\n",
+ bdevname(bh->b_bdev, b), (unsigned long long)bh->b_blocknr);
}
/*
@@ -583,14 +565,16 @@ repeat:
if (jh->b_next_transaction)
J_ASSERT_JH(jh, jh->b_next_transaction ==
transaction);
+ warn_dirty_buffer(bh);
}
/*
* In any case we need to clean the dirty flag and we must
* do it under the buffer lock to be sure we don't race
* with running write-out.
*/
- JBUFFER_TRACE(jh, "Unexpected dirty buffer");
- jbd_unexpected_dirty_buffer(jh);
+ JBUFFER_TRACE(jh, "Journalling dirty buffer");
+ clear_buffer_dirty(bh);
+ set_buffer_jbddirty(bh);
}
unlock_buffer(bh);
@@ -826,6 +810,15 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh)
J_ASSERT_JH(jh, buffer_locked(jh2bh(jh)));
if (jh->b_transaction == NULL) {
+ /*
+ * Previous journal_forget() could have left the buffer
+ * with jbddirty bit set because it was being committed. When
+ * the commit finished, we've filed the buffer for
+ * checkpointing and marked it dirty. Now we are reallocating
+ * the buffer so the transaction freeing it must have
+ * committed and so it's safe to clear the dirty bit.
+ */
+ clear_buffer_dirty(jh2bh(jh));
jh->b_transaction = transaction;
/* first access by this transaction */
@@ -1782,8 +1775,13 @@ static int __dispose_buffer(struct journal_head *jh, transaction_t *transaction)
if (jh->b_cp_transaction) {
JBUFFER_TRACE(jh, "on running+cp transaction");
+ /*
+ * We don't want to write the buffer anymore, clear the
+ * bit so that we don't confuse checks in
+ * __journal_file_buffer
+ */
+ clear_buffer_dirty(bh);
__journal_file_buffer(jh, transaction, BJ_Forget);
- clear_buffer_jbddirty(bh);
may_free = 0;
} else {
JBUFFER_TRACE(jh, "on running transaction");
@@ -2041,12 +2039,17 @@ void __journal_file_buffer(struct journal_head *jh,
if (jh->b_transaction && jh->b_jlist == jlist)
return;
- /* The following list of buffer states needs to be consistent
- * with __jbd_unexpected_dirty_buffer()'s handling of dirty
- * state. */
-
if (jlist == BJ_Metadata || jlist == BJ_Reserved ||
jlist == BJ_Shadow || jlist == BJ_Forget) {
+ /*
+ * For metadata buffers, we track dirty bit in buffer_jbddirty
+ * instead of buffer_dirty. We should not see a dirty bit set
+ * here because we clear it in do_get_write_access but e.g.
+ * tune2fs can modify the sb and set the dirty bit at any time
+ * so we try to gracefully handle that.
+ */
+ if (buffer_dirty(bh))
+ warn_dirty_buffer(bh);
if (test_clear_buffer_dirty(bh) ||
test_clear_buffer_jbddirty(bh))
was_dirty = 1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 20:13:14 +0000