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authorMiao Xie <miaox@cn.fujitsu.com>2014-02-20 18:08:56 +0800
committerJosef Bacik <jbacik@fb.com>2014-03-10 15:16:42 -0400
commitbb14a59b619d3a9993c3fa04bb10347db35ca550 (patch)
tree5c2af85d47ef6eab469a4e33eb4f5a2820bdf077 /fs/btrfs/tree-log.c
parent7483e1a4464999c72b231af0efe39cb31fd73f14 (diff)
Btrfs: use signed integer instead of unsigned long integer for log transid
The log trans id is initialized to be 0 every time we create a log tree, and the log tree need be re-created after a new transaction is started, it means the log trans id is unlikely to be a huge number, so we can use signed integer instead of unsigned long integer to save a bit space. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/tree-log.c')
-rw-r--r--fs/btrfs/tree-log.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 285c168391f3..128a904ceac0 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2362,7 +2362,7 @@ static int update_log_root(struct btrfs_trans_handle *trans,
}
static int wait_log_commit(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, unsigned long transid)
+ struct btrfs_root *root, int transid)
{
DEFINE_WAIT(wait);
int index = transid % 2;
@@ -2434,7 +2434,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
int ret;
struct btrfs_root *log = root->log_root;
struct btrfs_root *log_root_tree = root->fs_info->log_root_tree;
- unsigned long log_transid = 0;
+ int log_transid = 0;
struct blk_plug plug;
mutex_lock(&root->log_mutex);