xfs: remove the deprecated nodelaylog option

The delaylog mode has been the default for a long time, and the nodelaylog
option has been scheduled for removal in Linux 3.3.  Remove it and code
only used by it now that we have opened the 3.3 window.

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

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 3eca58f..0e76348 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -199,7 +199,6 @@
 	mp->m_flags |= XFS_MOUNT_BARRIER;
 	mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
 	mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
-	mp->m_flags |= XFS_MOUNT_DELAYLOG;
 
 	/*
 	 * These can be overridden by the mount option parsing.
@@ -353,11 +352,11 @@
 			mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
 			mp->m_qflags &= ~XFS_OQUOTA_ENFD;
 		} else if (!strcmp(this_char, MNTOPT_DELAYLOG)) {
-			mp->m_flags |= XFS_MOUNT_DELAYLOG;
-		} else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
-			mp->m_flags &= ~XFS_MOUNT_DELAYLOG;
 			xfs_warn(mp,
-	"nodelaylog is deprecated and will be removed in Linux 3.3");
+	"delaylog is the default now, option is deprecated.");
+		} else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
+			xfs_warn(mp,
+	"nodelaylog support has been removed, option is deprecated.");
 		} else if (!strcmp(this_char, MNTOPT_DISCARD)) {
 			mp->m_flags |= XFS_MOUNT_DISCARD;
 		} else if (!strcmp(this_char, MNTOPT_NODISCARD)) {
@@ -395,13 +394,6 @@
 		return EINVAL;
 	}
 
-	if ((mp->m_flags & XFS_MOUNT_DISCARD) &&
-	    !(mp->m_flags & XFS_MOUNT_DELAYLOG)) {
-		xfs_warn(mp,
-	"the discard option is incompatible with the nodelaylog option");
-		return EINVAL;
-	}
-
 #ifndef CONFIG_XFS_QUOTA
 	if (XFS_IS_QUOTA_RUNNING(mp)) {
 		xfs_warn(mp, "quota support not available in this kernel.");
@@ -501,7 +493,6 @@
 		{ XFS_MOUNT_ATTR2,		"," MNTOPT_ATTR2 },
 		{ XFS_MOUNT_FILESTREAMS,	"," MNTOPT_FILESTREAM },
 		{ XFS_MOUNT_GRPID,		"," MNTOPT_GRPID },
-		{ XFS_MOUNT_DELAYLOG,		"," MNTOPT_DELAYLOG },
 		{ XFS_MOUNT_DISCARD,		"," MNTOPT_DISCARD },
 		{ 0, NULL }
 	};