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Diff for /xfs-linux/xfs_inode.c between versions 1.484 and 1.485

version 1.484, 2007/10/19 04:06:50 version 1.485, 2007/11/02 05:12:07
Line 2812  xfs_iunpin( Line 2812  xfs_iunpin(
 {  {
         ASSERT(atomic_read(&ip->i_pincount) > 0);          ASSERT(atomic_read(&ip->i_pincount) > 0);
   
         if (atomic_dec_and_lock(&ip->i_pincount, &ip->i_flags_lock)) {          if (atomic_dec_and_test(&ip->i_pincount))
   
                 /*  
                  * If the inode is currently being reclaimed, the link between  
                  * the bhv_vnode and the xfs_inode will be broken after the  
                  * XFS_IRECLAIM* flag is set. Hence, if these flags are not  
                  * set, then we can move forward and mark the linux inode dirty  
                  * knowing that it is still valid as it won't freed until after  
                  * the bhv_vnode<->xfs_inode link is broken in xfs_reclaim. The  
                  * i_flags_lock is used to synchronise the setting of the  
                  * XFS_IRECLAIM* flags and the breaking of the link, and so we  
                  * can execute atomically w.r.t to reclaim by holding this lock  
                  * here.  
                  *  
                  * However, we still need to issue the unpin wakeup call as the  
                  * inode reclaim may be blocked waiting for the inode to become  
                  * unpinned.  
                  */  
   
                 if (!__xfs_iflags_test(ip, XFS_IRECLAIM|XFS_IRECLAIMABLE)) {  
                         bhv_vnode_t     *vp = XFS_ITOV_NULL(ip);  
                         struct inode *inode = NULL;  
   
                         BUG_ON(vp == NULL);  
                         inode = vn_to_inode(vp);  
                         BUG_ON(inode->i_state & I_CLEAR);  
   
                         /* make sync come back and flush this inode */  
                         if (!(inode->i_state & (I_NEW|I_FREEING)))  
                                 mark_inode_dirty_sync(inode);  
                 }  
                 spin_unlock(&ip->i_flags_lock);  
                 wake_up(&ip->i_ipin_wait);                  wake_up(&ip->i_ipin_wait);
         }  
 }  }
   
 /*  /*
Removed from v.1.484  
changed lines
  Added in v.1.485

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