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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

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Pull btrfs fixes from Chris Mason:
 "Most of these are fixing extent reservation accounting, or corners
  with tree writeback during commit.

  Josef's set does add a test, which isn't strictly a fix, but it'll
  keep us from making this same mistake again"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix outstanding_extents accounting in DIO
  Btrfs: add sanity test for outstanding_extents accounting
  Btrfs: just free dummy extent buffers
  Btrfs: account merges/splits properly
  Btrfs: prepare block group cache before writing
  Btrfs: fix ASSERT(list_empty(&cur_trans->dirty_bgs_list)
  Btrfs: account for the correct number of extents for delalloc reservations
  Btrfs: fix merge delalloc logic
  Btrfs: fix comp_oper to get right order
  Btrfs: catch transaction abortion after waiting for it
  btrfs: fix sizeof format specifier in btrfs_check_super_valid()
This commit is contained in:
Linus Torvalds
2015-03-21 10:53:37 -07:00
parent 0d122f7430 e1cbbfa5f5
commit 521d474631
8 changed files with 352 additions and 46 deletions
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39
fs/btrfs/transaction.c
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@@ -1023,17 +1023,13 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans,
u64 old_root_bytenr;
u64 old_root_used;
struct btrfs_root *tree_root = root->fs_info->tree_root;
bool extent_root = (root->objectid == BTRFS_EXTENT_TREE_OBJECTID);
old_root_used = btrfs_root_used(&root->root_item);
btrfs_write_dirty_block_groups(trans, root);
while (1) {
old_root_bytenr = btrfs_root_bytenr(&root->root_item);
if (old_root_bytenr == root->node->start &&
old_root_used == btrfs_root_used(&root->root_item) &&
(!extent_root ||
list_empty(&trans->transaction->dirty_bgs)))
old_root_used == btrfs_root_used(&root->root_item))
break;
btrfs_set_root_node(&root->root_item, root->node);
@@ -1044,14 +1040,6 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans,
return ret;
old_root_used = btrfs_root_used(&root->root_item);
if (extent_root) {
ret = btrfs_write_dirty_block_groups(trans, root);
if (ret)
return ret;
}
ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
if (ret)
return ret;
}
return 0;
@@ -1068,6 +1056,7 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct list_head *dirty_bgs = &trans->transaction->dirty_bgs;
struct list_head *next;
struct extent_buffer *eb;
int ret;
@@ -1095,11 +1084,15 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
if (ret)
return ret;
ret = btrfs_setup_space_cache(trans, root);
if (ret)
return ret;
/* run_qgroups might have added some more refs */
ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
if (ret)
return ret;
again:
while (!list_empty(&fs_info->dirty_cowonly_roots)) {
next = fs_info->dirty_cowonly_roots.next;
list_del_init(next);
@@ -1112,8 +1105,23 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
ret = update_cowonly_root(trans, root);
if (ret)
return ret;
ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
if (ret)
return ret;
}
while (!list_empty(dirty_bgs)) {
ret = btrfs_write_dirty_block_groups(trans, root);
if (ret)
return ret;
ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
if (ret)
return ret;
}
if (!list_empty(&fs_info->dirty_cowonly_roots))
goto again;
list_add_tail(&fs_info->extent_root->dirty_list,
&trans->transaction->switch_commits);
btrfs_after_dev_replace_commit(fs_info);
@@ -1811,6 +1819,9 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
wait_for_commit(root, cur_trans);
if (unlikely(cur_trans->aborted))
ret = cur_trans->aborted;
btrfs_put_transaction(cur_trans);
return ret;