xfs: clean up xlog_write_adv_cnt

Replace the awkward xlog_write_adv_cnt with an inline helper that makes
it more obvious that it's modifying it's paramters, and replace the use
of an integer type for "ptr" with a real void pointer.  Also move
xlog_write_adv_cnt to xfs_log_priv.h as it will be used outside of
xfs_log.c in the delayed logging series.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

1 files changed, 19 insertions, 27 deletions

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 2e6f3b82e4b7..9edbd67b5a9d 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -44,11 +44,6 @@
 
 kmem_zone_t     *xfs_log_ticket_zone;
 
-#define xlog_write_adv_cnt(ptr, len, off, bytes) \
-        { (ptr) += (bytes); \
-          (len) -= (bytes); \
-          (off) += (bytes);}
-
 /* Local miscellaneous function prototypes */
 STATIC int       xlog_commit_record(struct log *log, struct xlog_ticket *ticket,
                                     xlog_in_core_t **, xfs_lsn_t *);
@@ -100,7 +95,7 @@ STATIC xlog_ticket_t	*xlog_ticket_alloc(xlog_t *log,
                                          uint   flags);
 
 #if defined(DEBUG)
-STATIC void     xlog_verify_dest_ptr(xlog_t *log, __psint_t ptr);
+STATIC void     xlog_verify_dest_ptr(xlog_t *log, char *ptr);
 STATIC void     xlog_verify_grant_head(xlog_t *log, int equals);
 STATIC void     xlog_verify_iclog(xlog_t *log, xlog_in_core_t *iclog,
                                   int count, boolean_t syncing);
@@ -1683,11 +1678,9 @@ xlog_write_calc_vec_length(
  */
 static int
 xlog_write_start_rec(
-        __psint_t               ptr,
+        struct xlog_op_header   *ophdr,
         struct xlog_ticket      *ticket)
 {
-        struct xlog_op_header   *ophdr = (struct xlog_op_header *)ptr;
-
         if (!(ticket->t_flags & XLOG_TIC_INITED))
                 return 0;
 
@@ -1705,12 +1698,10 @@ xlog_write_start_rec(
 static xlog_op_header_t *
 xlog_write_setup_ophdr(
         struct log              *log,
-        __psint_t               ptr,
+        struct xlog_op_header   *ophdr,
         struct xlog_ticket      *ticket,
         uint                    flags)
 {
-        struct xlog_op_header   *ophdr = (struct xlog_op_header *)ptr;
-
         ophdr->oh_tid = cpu_to_be32(ticket->t_tid);
         ophdr->oh_clientid = ticket->t_clientid;
         ophdr->oh_res2 = 0;
@@ -1917,7 +1908,7 @@ xlog_write(
         lv = log_vector;
         vecp = lv->lv_iovecp;
         while (lv && index < lv->lv_niovecs) {
-                __psint_t       ptr;
+                void            *ptr;
                 int             log_offset;
 
                 error = xlog_state_get_iclog_space(log, len, &iclog, ticket,
@@ -1926,7 +1917,7 @@ xlog_write(
                         return error;
 
                 ASSERT(log_offset <= iclog->ic_size - 1);
-                ptr = (__psint_t)((char *)iclog->ic_datap + log_offset);
+                ptr = iclog->ic_datap + log_offset;
 
                 /* start_lsn is the first lsn written to. That's all we need. */
                 if (!*start_lsn)
@@ -1944,12 +1935,12 @@ xlog_write(
                         int                     copy_off;
 
                         ASSERT(reg->i_len % sizeof(__int32_t) == 0);
-                        ASSERT((__psint_t)ptr % sizeof(__int32_t) == 0);
+                        ASSERT((unsigned long)ptr % sizeof(__int32_t) == 0);
 
                         start_rec_copy = xlog_write_start_rec(ptr, ticket);
                         if (start_rec_copy) {
                                 record_cnt++;
-                                xlog_write_adv_cnt(ptr, len, log_offset,
+                                xlog_write_adv_cnt(&ptr, &len, &log_offset,
                                                    start_rec_copy);
                         }
 
@@ -1957,7 +1948,7 @@ xlog_write(
                         if (!ophdr)
                                 return XFS_ERROR(EIO);
 
-                        xlog_write_adv_cnt(ptr, len, log_offset,
+                        xlog_write_adv_cnt(&ptr, &len, &log_offset,
                                            sizeof(struct xlog_op_header));
 
                         len += xlog_write_setup_copy(ticket, ophdr,
@@ -1970,9 +1961,8 @@ xlog_write(
 
                         /* copy region */
                         ASSERT(copy_len >= 0);
-                        memcpy((xfs_caddr_t)ptr, reg->i_addr + copy_off,
-                               copy_len);
-                        xlog_write_adv_cnt(ptr, len, log_offset, copy_len);
+                        memcpy(ptr, reg->i_addr + copy_off, copy_len);
+                        xlog_write_adv_cnt(&ptr, &len, &log_offset, copy_len);
 
                         copy_len += start_rec_copy + sizeof(xlog_op_header_t);
                         record_cnt++;
@@ -3454,20 +3444,22 @@ xlog_ticket_alloc(
  * part of the log in case we trash the log structure.
  */
 void
-xlog_verify_dest_ptr(xlog_t     *log,
-                     __psint_t  ptr)
+xlog_verify_dest_ptr(
+        struct log      *log,
+        char            *ptr)
 {
         int i;
         int good_ptr = 0;
 
-        for (i=0; i < log->l_iclog_bufs; i++) {
-                if (ptr >= (__psint_t)log->l_iclog_bak[i] &&
-                    ptr <= (__psint_t)log->l_iclog_bak[i]+log->l_iclog_size)
+        for (i = 0; i < log->l_iclog_bufs; i++) {
+                if (ptr >= log->l_iclog_bak[i] &&
+                    ptr <= log->l_iclog_bak[i] + log->l_iclog_size)
                         good_ptr++;
         }
-        if (! good_ptr)
+
+        if (!good_ptr)
                 xlog_panic("xlog_verify_dest_ptr: invalid ptr");
-}       /* xlog_verify_dest_ptr */
+}
 
 STATIC void
 xlog_verify_grant_head(xlog_t *log, int equals)