Merge git://oss.sgi.com:8090/nathans/xfs-rc-2.6

* git://oss.sgi.com:8090/nathans/xfs-rc-2.6:
  [XFS] Ensure bulkstat from an invalid inode number gets caught always with
  [XFS] Fix a barrier related forced shutdown on mounts with quota enabled.
  [XFS] Fix remount vs no/barrier options by ensuring we clear unwanted
  [XFS] All xfs_disk_dquot_t values are (as the name says) disk endian.

fs/xfs/linux-2.6/xfs_buf.h

@@ -246,8 +246,8 @@ extern void xfs_buf_trace(xfs_buf_t *, char *, void *, void *);
 #define BUF_BUSY		XBF_DONT_BLOCK
 
 #define XFS_BUF_BFLAGS(bp)	((bp)->b_flags)
-#define XFS_BUF_ZEROFLAGS(bp)	\
-	((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI))
+#define XFS_BUF_ZEROFLAGS(bp)	((bp)->b_flags &= \
+		~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED))
 
 #define XFS_BUF_STALE(bp)	((bp)->b_flags |= XFS_B_STALE)
 #define XFS_BUF_UNSTALE(bp)	((bp)->b_flags &= ~XFS_B_STALE)

fs/xfs/linux-2.6/xfs_super.c

@@ -314,6 +314,13 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
 		return;
 	}
 
+	if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
+		xfs_fs_cmn_err(CE_NOTE, mp,
+		  "Disabling barriers, underlying device is readonly");
+		mp->m_flags &= ~XFS_MOUNT_BARRIER;
+		return;
+	}
+
 	error = xfs_barrier_test(mp);
 	if (error) {
 		xfs_fs_cmn_err(CE_NOTE, mp,

fs/xfs/quota/xfs_qm_bhv.c

@@ -217,17 +217,24 @@ xfs_qm_statvfs(
 		return 0;
 	dp = &dqp->q_core;
 
-	limit = dp->d_blk_softlimit ? dp->d_blk_softlimit : dp->d_blk_hardlimit;
+	limit = dp->d_blk_softlimit ?
+		be64_to_cpu(dp->d_blk_softlimit) :
+		be64_to_cpu(dp->d_blk_hardlimit);
 	if (limit && statp->f_blocks > limit) {
 		statp->f_blocks = limit;
-		statp->f_bfree = (statp->f_blocks > dp->d_bcount) ?
-					(statp->f_blocks - dp->d_bcount) : 0;
+		statp->f_bfree =
+			(statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
+			 (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
 	}
-	limit = dp->d_ino_softlimit ? dp->d_ino_softlimit : dp->d_ino_hardlimit;
+
+	limit = dp->d_ino_softlimit ?
+		be64_to_cpu(dp->d_ino_softlimit) :
+		be64_to_cpu(dp->d_ino_hardlimit);
 	if (limit && statp->f_files > limit) {
 		statp->f_files = limit;
-		statp->f_ffree = (statp->f_files > dp->d_icount) ?
-					(statp->f_ffree - dp->d_icount) : 0;
+		statp->f_ffree =
+			(statp->f_files > be64_to_cpu(dp->d_icount)) ?
+			 (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0;
 	}
 
 	xfs_qm_dqput(dqp);

fs/xfs/xfs_inode.c

@@ -334,10 +334,9 @@ xfs_itobp(
 #if !defined(__KERNEL__)
 	ni = 0;
 #elif defined(DEBUG)
-	ni = (imap_flags & XFS_IMAP_BULKSTAT) ? 0 :
-		(BBTOB(imap.im_len) >> mp->m_sb.sb_inodelog);
+	ni = BBTOB(imap.im_len) >> mp->m_sb.sb_inodelog;
 #else	/* usual case */
-	ni = (imap_flags & XFS_IMAP_BULKSTAT) ? 0 : 1;
+	ni = 1;
 #endif
 
 	for (i = 0; i < ni; i++) {
@@ -348,10 +347,14 @@ xfs_itobp(
 					(i << mp->m_sb.sb_inodelog));
 		di_ok = INT_GET(dip->di_core.di_magic, ARCH_CONVERT) == XFS_DINODE_MAGIC &&
 			    XFS_DINODE_GOOD_VERSION(INT_GET(dip->di_core.di_version, ARCH_CONVERT));
-		if (unlikely(XFS_TEST_ERROR(!di_ok, mp, XFS_ERRTAG_ITOBP_INOTOBP,
+		if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
+						XFS_ERRTAG_ITOBP_INOTOBP,
 						XFS_RANDOM_ITOBP_INOTOBP))) {
+			if (imap_flags & XFS_IMAP_BULKSTAT) {
+				xfs_trans_brelse(tp, bp);
+				return XFS_ERROR(EINVAL);
+			}
 #ifdef DEBUG
-			if (!(imap_flags & XFS_IMAP_BULKSTAT))
 			cmn_err(CE_ALERT,
 					"Device %s - bad inode magic/vsn "
 					"daddr %lld #%d (magic=%x)",

fs/xfs/xfs_log.c

@@ -1430,15 +1430,14 @@ xlog_sync(xlog_t		*log,
 	}
 	XFS_BUF_SET_PTR(bp, (xfs_caddr_t) &(iclog->ic_header), count);
 	XFS_BUF_SET_FSPRIVATE(bp, iclog);	/* save for later */
+	XFS_BUF_ZEROFLAGS(bp);
 	XFS_BUF_BUSY(bp);
 	XFS_BUF_ASYNC(bp);
 	/*
 	 * Do an ordered write for the log block.
-	 *
-	 * It may not be needed to flush the first split block in the log wrap
-	 * case, but do it anyways to be safe -AK
+	 * Its unnecessary to flush the first split block in the log wrap case.
 	 */
-	if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
+	if (!split && (log->l_mp->m_flags & XFS_MOUNT_BARRIER))
 		XFS_BUF_ORDERED(bp);
 
 	ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1);
@@ -1468,6 +1467,7 @@ xlog_sync(xlog_t		*log,
 		XFS_BUF_SET_PTR(bp, (xfs_caddr_t)((__psint_t)&(iclog->ic_header)+
 					    (__psint_t)count), split);
 		XFS_BUF_SET_FSPRIVATE(bp, iclog);
+		XFS_BUF_ZEROFLAGS(bp);
 		XFS_BUF_BUSY(bp);
 		XFS_BUF_ASYNC(bp);
 		if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)

fs/xfs/xfs_vfsops.c

@@ -515,7 +515,7 @@ xfs_mount(
 	if (error)
 		goto error2;
 
-	if ((mp->m_flags & XFS_MOUNT_BARRIER) && !(vfsp->vfs_flag & VFS_RDONLY))
+	if (mp->m_flags & XFS_MOUNT_BARRIER)
 		xfs_mountfs_check_barriers(mp);
 
 	error = XFS_IOINIT(vfsp, args, flags);