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-rw-r--r--fs/jbd2/commit.c104
1 files changed, 53 insertions, 51 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index cf2fc0594063..b73e0215baa7 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -43,7 +43,7 @@ static void journal_end_buffer_io_sync(struct buffer_head *bh, int uptodate)
clear_buffer_uptodate(bh);
if (orig_bh) {
clear_bit_unlock(BH_Shadow, &orig_bh->b_state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
wake_up_bit(&orig_bh->b_state, BH_Shadow);
}
unlock_buffer(bh);
@@ -97,7 +97,7 @@ static void jbd2_commit_block_csum_set(journal_t *j, struct buffer_head *bh)
struct commit_header *h;
__u32 csum;
- if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2))
+ if (!jbd2_journal_has_csum_v2or3(j))
return;
h = (struct commit_header *)(bh->b_data);
@@ -239,7 +239,7 @@ static int journal_submit_data_buffers(journal_t *journal,
spin_lock(&journal->j_list_lock);
J_ASSERT(jinode->i_transaction == commit_transaction);
clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
}
spin_unlock(&journal->j_list_lock);
@@ -277,7 +277,7 @@ static int journal_finish_inode_data_buffers(journal_t *journal,
}
spin_lock(&journal->j_list_lock);
clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
}
@@ -313,11 +313,11 @@ static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh)
return checksum;
}
-static void write_tag_block(int tag_bytes, journal_block_tag_t *tag,
+static void write_tag_block(journal_t *j, journal_block_tag_t *tag,
unsigned long long block)
{
tag->t_blocknr = cpu_to_be32(block & (u32)~0);
- if (tag_bytes > JBD2_TAG_SIZE32)
+ if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_64BIT))
tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1);
}
@@ -327,7 +327,7 @@ static void jbd2_descr_block_csum_set(journal_t *j,
struct jbd2_journal_block_tail *tail;
__u32 csum;
- if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2))
+ if (!jbd2_journal_has_csum_v2or3(j))
return;
tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize -
@@ -340,12 +340,13 @@ static void jbd2_descr_block_csum_set(journal_t *j,
static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
struct buffer_head *bh, __u32 sequence)
{
+ journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag;
struct page *page = bh->b_page;
__u8 *addr;
__u32 csum32;
__be32 seq;
- if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2))
+ if (!jbd2_journal_has_csum_v2or3(j))
return;
seq = cpu_to_be32(sequence);
@@ -355,8 +356,10 @@ static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
bh->b_size);
kunmap_atomic(addr);
- /* We only have space to store the lower 16 bits of the crc32c. */
- tag->t_checksum = cpu_to_be16(csum32);
+ if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3))
+ tag3->t_checksum = cpu_to_be32(csum32);
+ else
+ tag->t_checksum = cpu_to_be16(csum32);
}
/*
* jbd2_journal_commit_transaction
@@ -396,7 +399,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
LIST_HEAD(io_bufs);
LIST_HEAD(log_bufs);
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2))
+ if (jbd2_journal_has_csum_v2or3(journal))
csum_size = sizeof(struct jbd2_journal_block_tail);
/*
@@ -555,7 +558,6 @@ void jbd2_journal_commit_transaction(journal_t *journal)
blk_start_plug(&plug);
jbd2_journal_write_revoke_records(journal, commit_transaction,
&log_bufs, WRITE_SYNC);
- blk_finish_plug(&plug);
jbd_debug(3, "JBD2: commit phase 2b\n");
@@ -582,7 +584,6 @@ void jbd2_journal_commit_transaction(journal_t *journal)
err = 0;
bufs = 0;
descriptor = NULL;
- blk_start_plug(&plug);
while (commit_transaction->t_buffers) {
/* Find the next buffer to be journaled... */
@@ -692,7 +693,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
tag_flag |= JBD2_FLAG_SAME_UUID;
tag = (journal_block_tag_t *) tagp;
- write_tag_block(tag_bytes, tag, jh2bh(jh)->b_blocknr);
+ write_tag_block(journal, tag, jh2bh(jh)->b_blocknr);
tag->t_flags = cpu_to_be16(tag_flag);
jbd2_block_tag_csum_set(journal, tag, wbuf[bufs],
commit_transaction->t_tid);
@@ -1067,6 +1068,25 @@ restart_loop:
goto restart_loop;
}
+ /* Add the transaction to the checkpoint list
+ * __journal_remove_checkpoint() can not destroy transaction
+ * under us because it is not marked as T_FINISHED yet */
+ if (journal->j_checkpoint_transactions == NULL) {
+ journal->j_checkpoint_transactions = commit_transaction;
+ commit_transaction->t_cpnext = commit_transaction;
+ commit_transaction->t_cpprev = commit_transaction;
+ } else {
+ commit_transaction->t_cpnext =
+ journal->j_checkpoint_transactions;
+ commit_transaction->t_cpprev =
+ commit_transaction->t_cpnext->t_cpprev;
+ commit_transaction->t_cpnext->t_cpprev =
+ commit_transaction;
+ commit_transaction->t_cpprev->t_cpnext =
+ commit_transaction;
+ }
+ spin_unlock(&journal->j_list_lock);
+
/* Done with this transaction! */
jbd_debug(3, "JBD2: commit phase 7\n");
@@ -1085,24 +1105,7 @@ restart_loop:
atomic_read(&commit_transaction->t_handle_count);
trace_jbd2_run_stats(journal->j_fs_dev->bd_dev,
commit_transaction->t_tid, &stats.run);
-
- /*
- * Calculate overall stats
- */
- spin_lock(&journal->j_history_lock);
- journal->j_stats.ts_tid++;
- if (commit_transaction->t_requested)
- journal->j_stats.ts_requested++;
- journal->j_stats.run.rs_wait += stats.run.rs_wait;
- journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay;
- journal->j_stats.run.rs_running += stats.run.rs_running;
- journal->j_stats.run.rs_locked += stats.run.rs_locked;
- journal->j_stats.run.rs_flushing += stats.run.rs_flushing;
- journal->j_stats.run.rs_logging += stats.run.rs_logging;
- journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count;
- journal->j_stats.run.rs_blocks += stats.run.rs_blocks;
- journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged;
- spin_unlock(&journal->j_history_lock);
+ stats.ts_requested = (commit_transaction->t_requested) ? 1 : 0;
commit_transaction->t_state = T_COMMIT_CALLBACK;
J_ASSERT(commit_transaction == journal->j_committing_transaction);
@@ -1122,24 +1125,6 @@ restart_loop:
write_unlock(&journal->j_state_lock);
- if (journal->j_checkpoint_transactions == NULL) {
- journal->j_checkpoint_transactions = commit_transaction;
- commit_transaction->t_cpnext = commit_transaction;
- commit_transaction->t_cpprev = commit_transaction;
- } else {
- commit_transaction->t_cpnext =
- journal->j_checkpoint_transactions;
- commit_transaction->t_cpprev =
- commit_transaction->t_cpnext->t_cpprev;
- commit_transaction->t_cpnext->t_cpprev =
- commit_transaction;
- commit_transaction->t_cpprev->t_cpnext =
- commit_transaction;
- }
- spin_unlock(&journal->j_list_lock);
- /* Drop all spin_locks because commit_callback may be block.
- * __journal_remove_checkpoint() can not destroy transaction
- * under us because it is not marked as T_FINISHED yet */
if (journal->j_commit_callback)
journal->j_commit_callback(journal, commit_transaction);
@@ -1150,7 +1135,7 @@ restart_loop:
write_lock(&journal->j_state_lock);
spin_lock(&journal->j_list_lock);
commit_transaction->t_state = T_FINISHED;
- /* Recheck checkpoint lists after j_list_lock was dropped */
+ /* Check if the transaction can be dropped now that we are finished */
if (commit_transaction->t_checkpoint_list == NULL &&
commit_transaction->t_checkpoint_io_list == NULL) {
__jbd2_journal_drop_transaction(journal, commit_transaction);
@@ -1159,4 +1144,21 @@ restart_loop:
spin_unlock(&journal->j_list_lock);
write_unlock(&journal->j_state_lock);
wake_up(&journal->j_wait_done_commit);
+
+ /*
+ * Calculate overall stats
+ */
+ spin_lock(&journal->j_history_lock);
+ journal->j_stats.ts_tid++;
+ journal->j_stats.ts_requested += stats.ts_requested;
+ journal->j_stats.run.rs_wait += stats.run.rs_wait;
+ journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay;
+ journal->j_stats.run.rs_running += stats.run.rs_running;
+ journal->j_stats.run.rs_locked += stats.run.rs_locked;
+ journal->j_stats.run.rs_flushing += stats.run.rs_flushing;
+ journal->j_stats.run.rs_logging += stats.run.rs_logging;
+ journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count;
+ journal->j_stats.run.rs_blocks += stats.run.rs_blocks;
+ journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged;
+ spin_unlock(&journal->j_history_lock);
}
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