xfs: unpin stale inodes directly in IOP_COMMITTED

[~andy/linux] / fs / xfs / xfs_inode_item.c

diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 576fdfe81d603176abb31cf35c1b90901ca1ca5c..b1e88d56069caea9016cf907e6f4a0fd040b999b 100644 (file)
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -681,15 +681,15 @@ xfs_inode_item_unlock(
  * where the cluster buffer may be unpinned before the inode is inserted into
  * the AIL during transaction committed processing. If the buffer is unpinned
  * before the inode item has been committed and inserted, then it is possible
- * for the buffer to be written and IO completions before the inode is inserted
+ * for the buffer to be written and IO completes before the inode is inserted
  * into the AIL. In that case, we'd be inserting a clean, stale inode into the
  * AIL which will never get removed. It will, however, get reclaimed which
  * triggers an assert in xfs_inode_free() complaining about freein an inode
  * still in the AIL.
  *
- * To avoid this, return a lower LSN than the one passed in so that the
- * transaction committed code will not move the inode forward in the AIL but
- * will still unpin it properly.
+ * To avoid this, just unpin the inode directly and return a LSN of -1 so the
+ * transaction committed code knows that it does not need to do any further
+ * processing on the item.
  */
 STATIC xfs_lsn_t
 xfs_inode_item_committed(
@@ -699,8 +699,10 @@ xfs_inode_item_committed(
        struct xfs_inode_log_item *iip = INODE_ITEM(lip);
        struct xfs_inode        *ip = iip->ili_inode;
 
-       if (xfs_iflags_test(ip, XFS_ISTALE))
-               return lsn - 1;
+       if (xfs_iflags_test(ip, XFS_ISTALE)) {
+               xfs_inode_item_unpin(lip, 0);
+               return -1;
+       }
        return lsn;
 }
 
@@ -970,7 +972,6 @@ xfs_iflush_abort(
 {
        xfs_inode_log_item_t    *iip = ip->i_itemp;
 
-       iip = ip->i_itemp;
        if (iip) {
                struct xfs_ail  *ailp = iip->ili_item.li_ailp;
                if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {