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btrfs: remove the logged extents infrastructure

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This is no longer used anywhere, remove all of it.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2018-05-23 11:58:36 -04:00 committed by David Sterba
parent a2120a473a
commit 5636cf7d6d
4 changed files with 3 additions and 157 deletions
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123
fs/btrfs/ordered-data.c
View File

@ -421,129 +421,6 @@ out:
return ret == 0;
}
/* Needs to either be called under a log transaction or the log_mutex */
void btrfs_get_logged_extents(struct btrfs_inode *inode,
struct list_head *logged_list,
const loff_t start,
const loff_t end)
{
struct btrfs_ordered_inode_tree *tree;
struct btrfs_ordered_extent *ordered;
struct rb_node *n;
struct rb_node *prev;
tree = &inode->ordered_tree;
spin_lock_irq(&tree->lock);
n = __tree_search(&tree->tree, end, &prev);
if (!n)
n = prev;
for (; n; n = rb_prev(n)) {
ordered = rb_entry(n, struct btrfs_ordered_extent, rb_node);
if (ordered->file_offset > end)
continue;
if (entry_end(ordered) <= start)
break;
if (test_and_set_bit(BTRFS_ORDERED_LOGGED, &ordered->flags))
continue;
list_add(&ordered->log_list, logged_list);
refcount_inc(&ordered->refs);
}
spin_unlock_irq(&tree->lock);
}
void btrfs_put_logged_extents(struct list_head *logged_list)
{
struct btrfs_ordered_extent *ordered;
while (!list_empty(logged_list)) {
ordered = list_first_entry(logged_list,
struct btrfs_ordered_extent,
log_list);
list_del_init(&ordered->log_list);
btrfs_put_ordered_extent(ordered);
}
}
void btrfs_submit_logged_extents(struct list_head *logged_list,
struct btrfs_root *log)
{
int index = log->log_transid % 2;
spin_lock_irq(&log->log_extents_lock[index]);
list_splice_tail(logged_list, &log->logged_list[index]);
spin_unlock_irq(&log->log_extents_lock[index]);
}
void btrfs_wait_logged_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *log, u64 transid)
{
struct btrfs_ordered_extent *ordered;
int index = transid % 2;
spin_lock_irq(&log->log_extents_lock[index]);
while (!list_empty(&log->logged_list[index])) {
struct inode *inode;
ordered = list_first_entry(&log->logged_list[index],
struct btrfs_ordered_extent,
log_list);
list_del_init(&ordered->log_list);
inode = ordered->inode;
spin_unlock_irq(&log->log_extents_lock[index]);
if (!test_bit(BTRFS_ORDERED_IO_DONE, &ordered->flags) &&
!test_bit(BTRFS_ORDERED_DIRECT, &ordered->flags)) {
u64 start = ordered->file_offset;
u64 end = ordered->file_offset + ordered->len - 1;
WARN_ON(!inode);
filemap_fdatawrite_range(inode->i_mapping, start, end);
}
wait_event(ordered->wait, test_bit(BTRFS_ORDERED_IO_DONE,
&ordered->flags));
/*
* In order to keep us from losing our ordered extent
* information when committing the transaction we have to make
* sure that any logged extents are completed when we go to
* commit the transaction. To do this we simply increase the
* current transactions pending_ordered counter and decrement it
* when the ordered extent completes.
*/
if (!test_bit(BTRFS_ORDERED_COMPLETE, &ordered->flags)) {
struct btrfs_ordered_inode_tree *tree;
tree = &BTRFS_I(inode)->ordered_tree;
spin_lock_irq(&tree->lock);
if (!test_bit(BTRFS_ORDERED_COMPLETE, &ordered->flags)) {
set_bit(BTRFS_ORDERED_PENDING, &ordered->flags);
atomic_inc(&trans->transaction->pending_ordered);
}
spin_unlock_irq(&tree->lock);
}
btrfs_put_ordered_extent(ordered);
spin_lock_irq(&log->log_extents_lock[index]);
}
spin_unlock_irq(&log->log_extents_lock[index]);
}
void btrfs_free_logged_extents(struct btrfs_root *log, u64 transid)
{
struct btrfs_ordered_extent *ordered;
int index = transid % 2;
spin_lock_irq(&log->log_extents_lock[index]);
while (!list_empty(&log->logged_list[index])) {
ordered = list_first_entry(&log->logged_list[index],
struct btrfs_ordered_extent,
log_list);
list_del_init(&ordered->log_list);
spin_unlock_irq(&log->log_extents_lock[index]);
btrfs_put_ordered_extent(ordered);
spin_lock_irq(&log->log_extents_lock[index]);
}
spin_unlock_irq(&log->log_extents_lock[index]);
}
/*
* used to drop a reference on an ordered extent. This will free
* the extent if the last reference is dropped

20
fs/btrfs/ordered-data.h
View File

@ -54,15 +54,11 @@ struct btrfs_ordered_sum {
#define BTRFS_ORDERED_UPDATED_ISIZE 7 /* indicates whether this ordered extent
* has done its due diligence in updating
* the isize. */
#define BTRFS_ORDERED_LOGGED_CSUM 8 /* We've logged the csums on this ordered
ordered extent */
#define BTRFS_ORDERED_TRUNCATED 9 /* Set when we have to truncate an extent */
#define BTRFS_ORDERED_TRUNCATED 8 /* Set when we have to truncate an extent */
#define BTRFS_ORDERED_LOGGED 10 /* Set when we've waited on this ordered extent
* in the logging code. */
#define BTRFS_ORDERED_PENDING 11 /* We are waiting for this ordered extent to
#define BTRFS_ORDERED_PENDING 9 /* We are waiting for this ordered extent to
* complete in the current transaction. */
#define BTRFS_ORDERED_REGULAR 12 /* Regular IO for COW */
#define BTRFS_ORDERED_REGULAR 10 /* Regular IO for COW */
struct btrfs_ordered_extent {
/* logical offset in the file */
@ -193,16 +189,6 @@ u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr,
const u64 range_start, const u64 range_len);
u64 btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr,
const u64 range_start, const u64 range_len);
void btrfs_get_logged_extents(struct btrfs_inode *inode,
struct list_head *logged_list,
const loff_t start,
const loff_t end);
void btrfs_put_logged_extents(struct list_head *logged_list);
void btrfs_submit_logged_extents(struct list_head *logged_list,
struct btrfs_root *log);
void btrfs_wait_logged_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *log, u64 transid);
void btrfs_free_logged_extents(struct btrfs_root *log, u64 transid);
int __init ordered_data_init(void);
void __cold ordered_data_exit(void);

16
fs/btrfs/tree-log.c
View File

@ -2933,7 +2933,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
/* bail out if we need to do a full commit */
if (btrfs_need_log_full_commit(fs_info, trans)) {
ret = -EAGAIN;
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&root->log_mutex);
goto out;
}
@ -2951,7 +2950,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
if (ret) {
blk_finish_plug(&plug);
btrfs_abort_transaction(trans, ret);
btrfs_free_logged_extents(log, log_transid);
btrfs_set_log_full_commit(fs_info, trans);
mutex_unlock(&root->log_mutex);
goto out;
@ -3002,7 +3000,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
goto out;
}
btrfs_wait_tree_log_extents(log, mark);
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&log_root_tree->log_mutex);
ret = -EAGAIN;
goto out;
@ -3020,7 +3017,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
if (atomic_read(&log_root_tree->log_commit[index2])) {
blk_finish_plug(&plug);
ret = btrfs_wait_tree_log_extents(log, mark);
btrfs_wait_logged_extents(trans, log, log_transid);
wait_log_commit(log_root_tree,
root_log_ctx.log_transid);
mutex_unlock(&log_root_tree->log_mutex);
@ -3045,7 +3041,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
if (btrfs_need_log_full_commit(fs_info, trans)) {
blk_finish_plug(&plug);
btrfs_wait_tree_log_extents(log, mark);
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&log_root_tree->log_mutex);
ret = -EAGAIN;
goto out_wake_log_root;
@ -3058,7 +3053,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
if (ret) {
btrfs_set_log_full_commit(fs_info, trans);
btrfs_abort_transaction(trans, ret);
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&log_root_tree->log_mutex);
goto out_wake_log_root;
}
@ -3068,11 +3062,9 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
EXTENT_NEW | EXTENT_DIRTY);
if (ret) {
btrfs_set_log_full_commit(fs_info, trans);
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&log_root_tree->log_mutex);
goto out_wake_log_root;
}
btrfs_wait_logged_extents(trans, log, log_transid);
btrfs_set_super_log_root(fs_info->super_for_commit,
log_root_tree->node->start);
@ -3159,14 +3151,6 @@ static void free_log_tree(struct btrfs_trans_handle *trans,
EXTENT_DIRTY | EXTENT_NEW | EXTENT_NEED_WAIT);
}
/*
* We may have short-circuited the log tree with the full commit logic
* and left ordered extents on our list, so clear these out to keep us
* from leaking inodes and memory.
*/
btrfs_free_logged_extents(log, 0);
btrfs_free_logged_extents(log, 1);
free_extent_buffer(log->node);
kfree(log);
}

1
include/trace/events/btrfs.h
View File

@ -433,7 +433,6 @@ DEFINE_EVENT(
{ (1 << BTRFS_ORDERED_DIRECT), "DIRECT" }, \
{ (1 << BTRFS_ORDERED_IOERR), "IOERR" }, \
{ (1 << BTRFS_ORDERED_UPDATED_ISIZE), "UPDATED_ISIZE" }, \
{ (1 << BTRFS_ORDERED_LOGGED_CSUM), "LOGGED_CSUM" }, \
{ (1 << BTRFS_ORDERED_TRUNCATED), "TRUNCATED" })