[XFS] Reverse the sense of COMPAT_ATTR and ATTR2, keeps it simple and

consistent.

SGI-PV: 941645
SGI-Modid: xfs-linux-melb:xfs-kern:202961a
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/xfs_attr_leaf.c

@@ -128,7 +128,7 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
 		return (offset >= minforkoff) ? minforkoff : 0;
 	}
 
-	if (unlikely(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) {
+	if (!(mp->m_flags & XFS_MOUNT_ATTR2)) {
 		if (bytes <= XFS_IFORK_ASIZE(dp))
 			return mp->m_attroffset >> 3;
 		return 0;
@@ -157,7 +157,7 @@ xfs_sbversion_add_attr2(xfs_mount_t *mp, xfs_trans_t *tp)
 {
 	unsigned long s;
 
-	if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR) &&
+	if ((mp->m_flags & XFS_MOUNT_ATTR2) &&
 	    !(XFS_SB_VERSION_HASATTR2(&mp->m_sb))) {
 		s = XFS_SB_LOCK(mp);
 		if (!XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
@@ -311,7 +311,7 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
 	 */
 	totsize -= size;
 	if (totsize == sizeof(xfs_attr_sf_hdr_t) && !args->addname &&
-	    !(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) {
+	    (mp->m_flags & XFS_MOUNT_ATTR2)) {
 		/*
 		 * Last attribute now removed, revert to original
 		 * inode format making all literal area available
@@ -330,7 +330,7 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
 		dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize);
 		ASSERT(dp->i_d.di_forkoff);
 		ASSERT(totsize > sizeof(xfs_attr_sf_hdr_t) || args->addname ||
-			(mp->m_flags & XFS_MOUNT_COMPAT_ATTR));
+			!(mp->m_flags & XFS_MOUNT_ATTR2));
 		dp->i_afp->if_ext_max =
 			XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
 		dp->i_df.if_ext_max =
@@ -739,7 +739,7 @@ xfs_attr_shortform_allfit(xfs_dabuf_t *bp, xfs_inode_t *dp)
 				+ name_loc->namelen
 				+ INT_GET(name_loc->valuelen, ARCH_CONVERT);
 	}
-	if (!(dp->i_mount->m_flags & XFS_MOUNT_COMPAT_ATTR) &&
+	if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) &&
 	    (bytes == sizeof(struct xfs_attr_sf_hdr)))
 		return(-1);
 	return(xfs_attr_shortform_bytesfit(dp, bytes));
@@ -778,7 +778,7 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff)
 		goto out;
 
 	if (forkoff == -1) {
-		ASSERT(!(dp->i_mount->m_flags & XFS_MOUNT_COMPAT_ATTR));
+		ASSERT(dp->i_mount->m_flags & XFS_MOUNT_ATTR2);
 
 		/*
 		 * Last attribute was removed, revert to original

fs/xfs/xfs_bmap.c

@@ -3948,7 +3948,7 @@ xfs_bmap_add_attrfork(
 		ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
 		if (!ip->i_d.di_forkoff)
 			ip->i_d.di_forkoff = mp->m_attroffset >> 3;
-		else if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR))
+		else if (mp->m_flags & XFS_MOUNT_ATTR2)
 			version = 2;
 		break;
 	default:
@@ -4096,13 +4096,13 @@ xfs_bmap_compute_maxlevels(
 	 */
 	if (whichfork == XFS_DATA_FORK) {
 		maxleafents = MAXEXTNUM;
-		sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ?
-			mp->m_attroffset : XFS_BMDR_SPACE_CALC(MINDBTPTRS);
+		sz = (mp->m_flags & XFS_MOUNT_ATTR2) ?
+			XFS_BMDR_SPACE_CALC(MINDBTPTRS) : mp->m_attroffset;
 	} else {
 		maxleafents = MAXAEXTNUM;
-		sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ?
-			mp->m_sb.sb_inodesize - mp->m_attroffset :
-			XFS_BMDR_SPACE_CALC(MINABTPTRS);
+		sz = (mp->m_flags & XFS_MOUNT_ATTR2) ?
+			XFS_BMDR_SPACE_CALC(MINABTPTRS) :
+			mp->m_sb.sb_inodesize - mp->m_attroffset;
 	}
 	maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
 	minleafrecs = mp->m_bmap_dmnr[0];

fs/xfs/xfs_clnt.h

@@ -57,7 +57,7 @@ struct xfs_mount_args {
 /*
  * XFS mount option flags -- args->flags1
  */
-#define	XFSMNT_COMPAT_ATTR	0x00000001	/* do not use ATTR2 format */
+#define	XFSMNT_ATTR2		0x00000001	/* allow ATTR2 EA format */
 #define	XFSMNT_WSYNC		0x00000002	/* safe mode nfs mount
 						 * compatible */
 #define	XFSMNT_INO64		0x00000004	/* move inode numbers up

fs/xfs/xfs_dir.c

@@ -176,7 +176,7 @@ xfs_dir_mount(xfs_mount_t *mp)
 	uint shortcount, leafcount, count;
 
 	mp->m_dirversion = 1;
-	if (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) {
+	if (!(mp->m_flags & XFS_MOUNT_ATTR2)) {
 		shortcount = (mp->m_attroffset -
 				(uint)sizeof(xfs_dir_sf_hdr_t)) /
 				 (uint)sizeof(xfs_dir_sf_entry_t);

fs/xfs/xfs_mount.h

@@ -393,7 +393,7 @@ typedef struct xfs_mount {
 						   user */
 #define XFS_MOUNT_NOALIGN	(1ULL << 7)	/* turn off stripe alignment
 						   allocations */
-#define XFS_MOUNT_COMPAT_ATTR	(1ULL << 8)	/* do not use attr2 format */
+#define XFS_MOUNT_ATTR2		(1ULL << 8)	/* allow use of attr2 format */
 			     /*	(1ULL << 9)	-- currently unused */
 #define XFS_MOUNT_NORECOVERY	(1ULL << 10)	/* no recovery - dirty fs */
 #define XFS_MOUNT_SHARED	(1ULL << 11)	/* shared mount */

fs/xfs/xfs_vfsops.c

@@ -291,8 +291,8 @@ xfs_start_flags(
 		mp->m_flags |= XFS_MOUNT_IDELETE;
 	if (ap->flags & XFSMNT_DIRSYNC)
 		mp->m_flags |= XFS_MOUNT_DIRSYNC;
-	if (ap->flags & XFSMNT_COMPAT_ATTR)
-		mp->m_flags |= XFS_MOUNT_COMPAT_ATTR;
+	if (ap->flags & XFSMNT_ATTR2)
+		mp->m_flags |= XFS_MOUNT_ATTR2;
 
 	if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
 		mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
@@ -350,6 +350,10 @@ xfs_finish_flags(
 		}
 	}
 
+	if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
+		mp->m_flags |= XFS_MOUNT_ATTR2;
+	}
+
 	/*
 	 * prohibit r/w mounts of read-only filesystems
 	 */
@@ -385,10 +389,6 @@ xfs_finish_flags(
 			return XFS_ERROR(EINVAL);
 	}
 
-	if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
-		mp->m_flags &= ~XFS_MOUNT_COMPAT_ATTR;
-	}
-
 	return 0;
 }
 
@@ -1690,7 +1690,6 @@ xfs_parseargs(
 	int			iosize;
 
 	args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
-	args->flags |= XFSMNT_COMPAT_ATTR;
 	args->flags |= XFSMNT_BARRIER;
 
 #if 0	/* XXX: off by default, until some remaining issues ironed out */
@@ -1828,9 +1827,9 @@ xfs_parseargs(
 		} else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
 			args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
 		} else if (!strcmp(this_char, MNTOPT_ATTR2)) {
-			args->flags &= ~XFSMNT_COMPAT_ATTR;
+			args->flags |= XFSMNT_ATTR2;
 		} else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
-			args->flags |= XFSMNT_COMPAT_ATTR;
+			args->flags &= ~XFSMNT_ATTR2;
 		} else if (!strcmp(this_char, "osyncisdsync")) {
 			/* no-op, this is now the default */
 printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
@@ -1941,8 +1940,6 @@ xfs_showargs(
 		seq_printf(m, "," MNTOPT_SWIDTH "=%d",
 				(int)XFS_FSB_TO_BB(mp, mp->m_swidth));
 
-	if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR))
-		seq_printf(m, "," MNTOPT_ATTR2);
 	if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE))
 		seq_printf(m, "," MNTOPT_LARGEIO);
 	if (!(mp->m_flags & XFS_MOUNT_BARRIER))