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[PATCH 51/50] xfs: add xfs sb v4 support for dirent filetype field

To: <xfs@xxxxxxxxxxx>
Subject: [PATCH 51/50] xfs: add xfs sb v4 support for dirent filetype field
From: Mark Tinguely <tinguely@xxxxxxx>
Date: Mon, 19 Aug 2013 15:19:36 -0500
Delivered-to: xfs@xxxxxxxxxxx
References: <1376304611-22994-1-git-send-email-david@xxxxxxxxxxxxx>
User-agent: quilt/0.51-1
Add XFS superblock v4 support for the file type field in the
directory entry feature.

This support adds a feature bit for version 4 superblocks and
leaves the original superblock 5 incompatibility bit.

Signed-off-by: Mark Tinguely <tinguely@xxxxxxx>
---
 fs/xfs/xfs_sb.h |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Index: b/fs/xfs/xfs_sb.h
===================================================================
--- a/fs/xfs/xfs_sb.h
+++ b/fs/xfs/xfs_sb.h
@@ -84,11 +84,13 @@ struct xfs_trans;
 #define XFS_SB_VERSION2_PARENTBIT      0x00000010      /* parent pointers */
 #define XFS_SB_VERSION2_PROJID32BIT    0x00000080      /* 32 bit project id */
 #define XFS_SB_VERSION2_CRCBIT         0x00000100      /* metadata CRCs */
+#define XFS_SB_VERSION2_FTYPE          0x00000200      /* inode type in dir */
 
 #define        XFS_SB_VERSION2_OKREALFBITS     \
        (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
         XFS_SB_VERSION2_ATTR2BIT       | \
-        XFS_SB_VERSION2_PROJID32BIT)
+        XFS_SB_VERSION2_PROJID32BIT    | \
+        XFS_SB_VERSION2_FTYPE)
 #define        XFS_SB_VERSION2_OKSASHFBITS     \
        (0)
 #define XFS_SB_VERSION2_OKREALBITS     \
@@ -631,8 +633,10 @@ static inline int xfs_sb_version_has_pqu
 
 static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp)
 {
-       return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
-               xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE);
+       return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
+               xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) ||
+              (xfs_sb_version_hasmorebits(sbp) &&
+                (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE));
 }
 
 /*


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