[XFS] Document ikeep mount option

SGI Modid: 2.5.x-xfs:slinx:159536b

diff --git a/Documentation/filesystems/xfs.txt b/Documentation/filesystems/xfs.txt
index 947a56bd63322fcdcadb9fde2be8b804646f41eb..d43148104ab58c092bfb073a33f598b3ff0fb0de 100644 (file)
--- a/Documentation/filesystems/xfs.txt
+++ b/Documentation/filesystems/xfs.txt
@@ -29,6 +29,11 @@ When mounting an XFS filesystem, the following options are accepted.
        The preferred buffered I/O size can also be altered on an
        individual file basis using the ioctl(2) system call.
 
+  ikeep
+       When inode clusters are emptied of inodes, keep them around
+       on the disk, this is the old XFS behavior. Default is now to
+       return the inode cluster to the free space pool.
+
   logbufs=value
        Set the number of in-memory log buffers.  Valid numbers range
        from 2-8 inclusive.