AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

Btrfs: fix wrong return value of btrfs_wait_for_commit()

Browse Source 
If the id of the existed transaction is more than the one we specified, it
means the specified transaction was commited, so we should return 0, not
EINVAL.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Miao Xie 2012-11-26 08:42:07 +00:00 committed by Chris Mason
parent ff7c1d3355
commit 8cd2807f79
1 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
fs/btrfs/transaction.c
View File

@ -456,28 +456,31 @@ static noinline void wait_for_commit(struct btrfs_root *root,
int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid)
{
struct btrfs_transaction *cur_trans = NULL, *t;
int ret;
int ret = 0;
ret = 0;
if (transid) {
if (transid <= root->fs_info->last_trans_committed)
goto out;
ret = -EINVAL;
/* find specified transaction */
spin_lock(&root->fs_info->trans_lock);
list_for_each_entry(t, &root->fs_info->trans_list, list) {
if (t->transid == transid) {
cur_trans = t;
atomic_inc(&cur_trans->use_count);
ret = 0;
break;
}
if (t->transid > transid)
if (t->transid > transid) {
ret = 0;
break;
}
}
spin_unlock(&root->fs_info->trans_lock);
ret = -EINVAL;
/* The specified transaction doesn't exist */
if (!cur_trans)
goto out; /* bad transid */
goto out;
} else {
/* find newest transaction that is committing | committed */
spin_lock(&root->fs_info->trans_lock);
@ -497,9 +500,7 @@ int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid)
}
wait_for_commit(root, cur_trans);
put_transaction(cur_trans);
ret = 0;
out:
return ret;
}