summaryrefslogtreecommitdiffstats
path: root/fs/jbd2/commit.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/jbd2/commit.c')
-rw-r--r--fs/jbd2/commit.c83
1 files changed, 38 insertions, 45 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 75716d3d2be..7c068c189d8 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -101,7 +101,6 @@ static int journal_submit_commit_record(journal_t *journal,
struct commit_header *tmp;
struct buffer_head *bh;
int ret;
- int barrier_done = 0;
struct timespec now = current_kernel_time();
if (is_journal_aborted(journal))
@@ -136,30 +135,22 @@ static int journal_submit_commit_record(journal_t *journal,
if (journal->j_flags & JBD2_BARRIER &&
!JBD2_HAS_INCOMPAT_FEATURE(journal,
JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
- set_buffer_ordered(bh);
- barrier_done = 1;
- }
- ret = submit_bh(WRITE_SYNC_PLUG, bh);
- if (barrier_done)
- clear_buffer_ordered(bh);
-
- /* is it possible for another commit to fail at roughly
- * the same time as this one? If so, we don't want to
- * trust the barrier flag in the super, but instead want
- * to remember if we sent a barrier request
- */
- if (ret == -EOPNOTSUPP && barrier_done) {
- printk(KERN_WARNING
- "JBD: barrier-based sync failed on %s - "
- "disabling barriers\n", journal->j_devname);
- spin_lock(&journal->j_state_lock);
- journal->j_flags &= ~JBD2_BARRIER;
- spin_unlock(&journal->j_state_lock);
-
- /* And try again, without the barrier */
- lock_buffer(bh);
- set_buffer_uptodate(bh);
- clear_buffer_dirty(bh);
+ ret = submit_bh(WRITE_SYNC_PLUG | WRITE_BARRIER, bh);
+ if (ret == -EOPNOTSUPP) {
+ printk(KERN_WARNING
+ "JBD2: Disabling barriers on %s, "
+ "not supported by device\n", journal->j_devname);
+ write_lock(&journal->j_state_lock);
+ journal->j_flags &= ~JBD2_BARRIER;
+ write_unlock(&journal->j_state_lock);
+
+ /* And try again, without the barrier */
+ lock_buffer(bh);
+ set_buffer_uptodate(bh);
+ clear_buffer_dirty(bh);
+ ret = submit_bh(WRITE_SYNC_PLUG, bh);
+ }
+ } else {
ret = submit_bh(WRITE_SYNC_PLUG, bh);
}
*cbh = bh;
@@ -180,11 +171,11 @@ retry:
wait_on_buffer(bh);
if (buffer_eopnotsupp(bh) && (journal->j_flags & JBD2_BARRIER)) {
printk(KERN_WARNING
- "JBD2: wait_on_commit_record: sync failed on %s - "
- "disabling barriers\n", journal->j_devname);
- spin_lock(&journal->j_state_lock);
+ "JBD2: %s: disabling barries on %s - not supported "
+ "by device\n", __func__, journal->j_devname);
+ write_lock(&journal->j_state_lock);
journal->j_flags &= ~JBD2_BARRIER;
- spin_unlock(&journal->j_state_lock);
+ write_unlock(&journal->j_state_lock);
lock_buffer(bh);
clear_buffer_dirty(bh);
@@ -400,7 +391,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
jbd_debug(1, "JBD: starting commit of transaction %d\n",
commit_transaction->t_tid);
- spin_lock(&journal->j_state_lock);
+ write_lock(&journal->j_state_lock);
commit_transaction->t_state = T_LOCKED;
/*
@@ -417,23 +408,23 @@ void jbd2_journal_commit_transaction(journal_t *journal)
stats.run.rs_locked);
spin_lock(&commit_transaction->t_handle_lock);
- while (commit_transaction->t_updates) {
+ while (atomic_read(&commit_transaction->t_updates)) {
DEFINE_WAIT(wait);
prepare_to_wait(&journal->j_wait_updates, &wait,
TASK_UNINTERRUPTIBLE);
- if (commit_transaction->t_updates) {
+ if (atomic_read(&commit_transaction->t_updates)) {
spin_unlock(&commit_transaction->t_handle_lock);
- spin_unlock(&journal->j_state_lock);
+ write_unlock(&journal->j_state_lock);
schedule();
- spin_lock(&journal->j_state_lock);
+ write_lock(&journal->j_state_lock);
spin_lock(&commit_transaction->t_handle_lock);
}
finish_wait(&journal->j_wait_updates, &wait);
}
spin_unlock(&commit_transaction->t_handle_lock);
- J_ASSERT (commit_transaction->t_outstanding_credits <=
+ J_ASSERT (atomic_read(&commit_transaction->t_outstanding_credits) <=
journal->j_max_transaction_buffers);
/*
@@ -497,7 +488,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
start_time = ktime_get();
commit_transaction->t_log_start = journal->j_head;
wake_up(&journal->j_wait_transaction_locked);
- spin_unlock(&journal->j_state_lock);
+ write_unlock(&journal->j_state_lock);
jbd_debug (3, "JBD: commit phase 2\n");
@@ -519,19 +510,20 @@ void jbd2_journal_commit_transaction(journal_t *journal)
* transaction! Now comes the tricky part: we need to write out
* metadata. Loop over the transaction's entire buffer list:
*/
- spin_lock(&journal->j_state_lock);
+ write_lock(&journal->j_state_lock);
commit_transaction->t_state = T_COMMIT;
- spin_unlock(&journal->j_state_lock);
+ write_unlock(&journal->j_state_lock);
trace_jbd2_commit_logging(journal, commit_transaction);
stats.run.rs_logging = jiffies;
stats.run.rs_flushing = jbd2_time_diff(stats.run.rs_flushing,
stats.run.rs_logging);
- stats.run.rs_blocks = commit_transaction->t_outstanding_credits;
+ stats.run.rs_blocks =
+ atomic_read(&commit_transaction->t_outstanding_credits);
stats.run.rs_blocks_logged = 0;
J_ASSERT(commit_transaction->t_nr_buffers <=
- commit_transaction->t_outstanding_credits);
+ atomic_read(&commit_transaction->t_outstanding_credits));
err = 0;
descriptor = NULL;
@@ -616,7 +608,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
* the free space in the log, but this counter is changed
* by jbd2_journal_next_log_block() also.
*/
- commit_transaction->t_outstanding_credits--;
+ atomic_dec(&commit_transaction->t_outstanding_credits);
/* Bump b_count to prevent truncate from stumbling over
the shadowed buffer! @@@ This can go if we ever get
@@ -977,7 +969,7 @@ restart_loop:
* __jbd2_journal_drop_transaction(). Otherwise we could race with
* other checkpointing code processing the transaction...
*/
- spin_lock(&journal->j_state_lock);
+ write_lock(&journal->j_state_lock);
spin_lock(&journal->j_list_lock);
/*
* Now recheck if some buffers did not get attached to the transaction
@@ -985,7 +977,7 @@ restart_loop:
*/
if (commit_transaction->t_forget) {
spin_unlock(&journal->j_list_lock);
- spin_unlock(&journal->j_state_lock);
+ write_unlock(&journal->j_state_lock);
goto restart_loop;
}
@@ -1003,7 +995,8 @@ restart_loop:
* File the transaction statistics
*/
stats.ts_tid = commit_transaction->t_tid;
- stats.run.rs_handle_count = commit_transaction->t_handle_count;
+ stats.run.rs_handle_count =
+ atomic_read(&commit_transaction->t_handle_count);
trace_jbd2_run_stats(journal->j_fs_dev->bd_dev,
commit_transaction->t_tid, &stats.run);
@@ -1037,7 +1030,7 @@ restart_loop:
journal->j_average_commit_time*3) / 4;
else
journal->j_average_commit_time = commit_time;
- spin_unlock(&journal->j_state_lock);
+ write_unlock(&journal->j_state_lock);
if (commit_transaction->t_checkpoint_list == NULL &&
commit_transaction->t_checkpoint_io_list == NULL) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-13 07:03:06 +0000