xfs: convert log grant heads to atomic variables
Convert the log grant heads to atomic64_t types in preparation for
converting the accounting algorithms to atomic operations. his patch
just converts the variables; the algorithmic changes are in a
separate patch for clarity.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index d118bf8..a1d7d12 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -47,7 +47,7 @@
xfs_buftarg_t *log_target,
xfs_daddr_t blk_offset,
int num_bblks);
-STATIC int xlog_space_left(struct log *log, int64_t *head);
+STATIC int xlog_space_left(struct log *log, atomic64_t *head);
STATIC int xlog_sync(xlog_t *log, xlog_in_core_t *iclog);
STATIC void xlog_dealloc_log(xlog_t *log);
@@ -100,7 +100,7 @@
static void
xlog_grant_sub_space(
struct log *log,
- int64_t *head,
+ atomic64_t *head,
int bytes)
{
int cycle, space;
@@ -119,7 +119,7 @@
static void
xlog_grant_add_space(
struct log *log,
- int64_t *head,
+ atomic64_t *head,
int bytes)
{
int tmp;
@@ -816,7 +816,7 @@
STATIC int
xlog_space_left(
struct log *log,
- int64_t *head)
+ atomic64_t *head)
{
int free_bytes;
int tail_bytes;