[XFS] Add ail pointer into log items

Add an xfs_ail pointer to log items so that the log items can reference
the AIL directly during callbacks without needed a struct xfs_mount.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32352a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 99ba0e2658b7..5163e1216c8e 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -1383,11 +1383,13 @@ xfs_trans_chunk_committed(
         xfs_log_item_desc_t     *lidp;
         xfs_log_item_t          *lip;
         xfs_lsn_t               item_lsn;
-        struct xfs_mount        *mp;
         int                     i;
 
         lidp = licp->lic_descs;
         for (i = 0; i < licp->lic_unused; i++, lidp++) {
+                struct xfs_mount        *mp;
+                struct xfs_ail          *ailp;
+
                 if (xfs_lic_isfree(licp, i)) {
                         continue;
                 }
@@ -1425,7 +1427,8 @@ xfs_trans_chunk_committed(
                  * the test below.
                  */
                 mp = lip->li_mountp;
-                spin_lock(&mp->m_ail->xa_lock);
+                ailp = lip->li_ailp;
+                spin_lock(&ailp->xa_lock);
                 if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) {
                         /*
                          * This will set the item's lsn to item_lsn
@@ -1436,7 +1439,7 @@ xfs_trans_chunk_committed(
                          */
                         xfs_trans_update_ail(mp, lip, item_lsn);
                 } else {
-                        spin_unlock(&mp->m_ail->xa_lock);
+                        spin_unlock(&ailp->xa_lock);
                 }
 
                 /*