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Diffstat (limited to 'fs/btrfs/transaction.c')
-rw-r--r--fs/btrfs/transaction.c138
1 files changed, 87 insertions, 51 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 06c0a958d114..0bec10740ad3 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -10,6 +10,7 @@
#include <linux/pagemap.h>
#include <linux/blkdev.h>
#include <linux/uuid.h>
+#include <linux/timekeeping.h>
#include "misc.h"
#include "ctree.h"
#include "disk-io.h"
@@ -23,7 +24,7 @@
#include "space-info.h"
#include "zoned.h"
-#define BTRFS_ROOT_TRANS_TAG XA_MARK_0
+#define BTRFS_ROOT_TRANS_TAG 0
/*
* Transaction states and transitions
@@ -437,15 +438,15 @@ static int record_root_in_trans(struct btrfs_trans_handle *trans,
*/
smp_wmb();
- spin_lock(&fs_info->fs_roots_lock);
+ spin_lock(&fs_info->fs_roots_radix_lock);
if (root->last_trans == trans->transid && !force) {
- spin_unlock(&fs_info->fs_roots_lock);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
return 0;
}
- xa_set_mark(&fs_info->fs_roots,
- (unsigned long)root->root_key.objectid,
- BTRFS_ROOT_TRANS_TAG);
- spin_unlock(&fs_info->fs_roots_lock);
+ radix_tree_tag_set(&fs_info->fs_roots_radix,
+ (unsigned long)root->root_key.objectid,
+ BTRFS_ROOT_TRANS_TAG);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
root->last_trans = trans->transid;
/* this is pretty tricky. We don't want to
@@ -487,9 +488,11 @@ void btrfs_add_dropped_root(struct btrfs_trans_handle *trans,
spin_unlock(&cur_trans->dropped_roots_lock);
/* Make sure we don't try to update the root at commit time */
- xa_clear_mark(&fs_info->fs_roots,
- (unsigned long)root->root_key.objectid,
- BTRFS_ROOT_TRANS_TAG);
+ spin_lock(&fs_info->fs_roots_radix_lock);
+ radix_tree_tag_clear(&fs_info->fs_roots_radix,
+ (unsigned long)root->root_key.objectid,
+ BTRFS_ROOT_TRANS_TAG);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
}
int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
@@ -1402,8 +1405,9 @@ void btrfs_add_dead_root(struct btrfs_root *root)
static noinline int commit_fs_roots(struct btrfs_trans_handle *trans)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *root;
- unsigned long index;
+ struct btrfs_root *gang[8];
+ int i;
+ int ret;
/*
* At this point no one can be using this transaction to modify any tree
@@ -1411,46 +1415,57 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans)
*/
ASSERT(trans->transaction->state == TRANS_STATE_COMMIT_DOING);
- spin_lock(&fs_info->fs_roots_lock);
- xa_for_each_marked(&fs_info->fs_roots, index, root, BTRFS_ROOT_TRANS_TAG) {
- int ret;
-
- /*
- * At this point we can neither have tasks logging inodes
- * from a root nor trying to commit a log tree.
- */
- ASSERT(atomic_read(&root->log_writers) == 0);
- ASSERT(atomic_read(&root->log_commit[0]) == 0);
- ASSERT(atomic_read(&root->log_commit[1]) == 0);
-
- xa_clear_mark(&fs_info->fs_roots,
- (unsigned long)root->root_key.objectid,
- BTRFS_ROOT_TRANS_TAG);
- spin_unlock(&fs_info->fs_roots_lock);
-
- btrfs_free_log(trans, root);
- ret = btrfs_update_reloc_root(trans, root);
- if (ret)
- return ret;
-
- /* See comments in should_cow_block() */
- clear_bit(BTRFS_ROOT_FORCE_COW, &root->state);
- smp_mb__after_atomic();
+ spin_lock(&fs_info->fs_roots_radix_lock);
+ while (1) {
+ ret = radix_tree_gang_lookup_tag(&fs_info->fs_roots_radix,
+ (void **)gang, 0,
+ ARRAY_SIZE(gang),
+ BTRFS_ROOT_TRANS_TAG);
+ if (ret == 0)
+ break;
+ for (i = 0; i < ret; i++) {
+ struct btrfs_root *root = gang[i];
+ int ret2;
+
+ /*
+ * At this point we can neither have tasks logging inodes
+ * from a root nor trying to commit a log tree.
+ */
+ ASSERT(atomic_read(&root->log_writers) == 0);
+ ASSERT(atomic_read(&root->log_commit[0]) == 0);
+ ASSERT(atomic_read(&root->log_commit[1]) == 0);
+
+ radix_tree_tag_clear(&fs_info->fs_roots_radix,
+ (unsigned long)root->root_key.objectid,
+ BTRFS_ROOT_TRANS_TAG);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
+
+ btrfs_free_log(trans, root);
+ ret2 = btrfs_update_reloc_root(trans, root);
+ if (ret2)
+ return ret2;
+
+ /* see comments in should_cow_block() */
+ clear_bit(BTRFS_ROOT_FORCE_COW, &root->state);
+ smp_mb__after_atomic();
+
+ if (root->commit_root != root->node) {
+ list_add_tail(&root->dirty_list,
+ &trans->transaction->switch_commits);
+ btrfs_set_root_node(&root->root_item,
+ root->node);
+ }
- if (root->commit_root != root->node) {
- list_add_tail(&root->dirty_list,
- &trans->transaction->switch_commits);
- btrfs_set_root_node(&root->root_item, root->node);
+ ret2 = btrfs_update_root(trans, fs_info->tree_root,
+ &root->root_key,
+ &root->root_item);
+ if (ret2)
+ return ret2;
+ spin_lock(&fs_info->fs_roots_radix_lock);
+ btrfs_qgroup_free_meta_all_pertrans(root);
}
-
- ret = btrfs_update_root(trans, fs_info->tree_root,
- &root->root_key, &root->root_item);
- if (ret)
- return ret;
- spin_lock(&fs_info->fs_roots_lock);
- btrfs_qgroup_free_meta_all_pertrans(root);
}
- spin_unlock(&fs_info->fs_roots_lock);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
return 0;
}
@@ -1817,8 +1832,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
btrfs_i_size_write(BTRFS_I(parent_inode), parent_inode->i_size +
dentry->d_name.len * 2);
- parent_inode->i_mtime = parent_inode->i_ctime =
- current_time(parent_inode);
+ parent_inode->i_mtime = current_time(parent_inode);
+ parent_inode->i_ctime = parent_inode->i_mtime;
ret = btrfs_update_inode_fallback(trans, parent_root, BTRFS_I(parent_inode));
if (ret) {
btrfs_abort_transaction(trans, ret);
@@ -2084,12 +2099,23 @@ static void add_pending_snapshot(struct btrfs_trans_handle *trans)
list_add(&trans->pending_snapshot->list, &cur_trans->pending_snapshots);
}
+static void update_commit_stats(struct btrfs_fs_info *fs_info, ktime_t interval)
+{
+ fs_info->commit_stats.commit_count++;
+ fs_info->commit_stats.last_commit_dur = interval;
+ fs_info->commit_stats.max_commit_dur =
+ max_t(u64, fs_info->commit_stats.max_commit_dur, interval);
+ fs_info->commit_stats.total_commit_dur += interval;
+}
+
int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_transaction *cur_trans = trans->transaction;
struct btrfs_transaction *prev_trans = NULL;
int ret;
+ ktime_t start_time;
+ ktime_t interval;
ASSERT(refcount_read(&trans->use_count) == 1);
@@ -2214,6 +2240,12 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
}
}
+ /*
+ * Get the time spent on the work done by the commit thread and not
+ * the time spent waiting on a previous commit
+ */
+ start_time = ktime_get_ns();
+
extwriter_counter_dec(cur_trans, trans->type);
ret = btrfs_start_delalloc_flush(fs_info);
@@ -2455,6 +2487,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
trace_btrfs_transaction_commit(fs_info);
+ interval = ktime_get_ns() - start_time;
+
btrfs_scrub_continue(fs_info);
if (current->journal_info == trans)
@@ -2462,6 +2496,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
kmem_cache_free(btrfs_trans_handle_cachep, trans);
+ update_commit_stats(fs_info, interval);
+
return ret;
unlock_reloc:
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-04 17:03:26 +0000