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>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index d118bf804480..a1d7d12fc51f 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -47,7 +47,7 @@ STATIC xlog_t *  xlog_alloc_log(xfs_mount_t	*mp,
                                 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 int	xlog_iclogs_empty(xlog_t *log);
 static void
 xlog_grant_sub_space(
         struct log      *log,
-        int64_t         *head,
+        atomic64_t      *head,
         int             bytes)
 {
         int             cycle, space;
@@ -119,7 +119,7 @@ xlog_grant_sub_space(
 static void
 xlog_grant_add_space(
         struct log      *log,
-        int64_t         *head,
+        atomic64_t      *head,
         int             bytes)
 {
         int             tmp;
@@ -816,7 +816,7 @@ xlog_assign_tail_lsn(
 STATIC int
 xlog_space_left(
         struct log      *log,
-        int64_t         *head)
+        atomic64_t      *head)
 {
         int             free_bytes;
         int             tail_bytes;