Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  Long btree pointers are still 64 bit on disk
  [XFS] Remove the rest of the macro-to-function indirections.
  xfs: sanity check attr fork size
  xfs: fix bad_features2 fixups for the root filesystem
  xfs: add a lock class for group/project dquots
  xfs: lockdep annotations for xfs_dqlock2
  xfs: add a separate lock class for the per-mount list of dquots
  xfs: use mnt_want_write in compat_attrmulti ioctl
  xfs: fix dentry aliasing issues in open_by_handle

fs/xfs/Kconfig

 config XFS_FS
 	tristate "XFS filesystem support"
 	depends on BLOCK
+	select EXPORTFS
 	help
 	  XFS is a high performance journaling filesystem which originated
 	  on the SGI IRIX platform.  It is completely multi-threaded, can

fs/xfs/linux-2.6/xfs_ioctl.h

@@ -34,16 +34,13 @@ xfs_find_handle(
 
 extern int
 xfs_open_by_handle(
-	xfs_mount_t		*mp,
-	xfs_fsop_handlereq_t	*hreq,
 	struct file		*parfilp,
-	struct inode		*parinode);
+	xfs_fsop_handlereq_t	*hreq);
 
 extern int
 xfs_readlink_by_handle(
-	xfs_mount_t		*mp,
-	xfs_fsop_handlereq_t	*hreq,
-	struct inode		*parinode);
+	struct file		*parfilp,
+	xfs_fsop_handlereq_t	*hreq);
 
 extern int
 xfs_attrmulti_attr_get(
@@ -67,6 +64,12 @@ xfs_attrmulti_attr_remove(
 	char			*name,
 	__uint32_t		flags);
 
+extern struct dentry *
+xfs_handle_to_dentry(
+	struct file		*parfilp,
+	void __user		*uhandle,
+	u32			hlen);
+
 extern long
 xfs_file_ioctl(
 	struct file		*filp,

fs/xfs/linux-2.6/xfs_ioctl32.c

@@ -17,6 +17,7 @@
  */
 #include <linux/compat.h>
 #include <linux/ioctl.h>
+#include <linux/mount.h>
 #include <asm/uaccess.h>
 #include "xfs.h"
 #include "xfs_fs.h"
@@ -340,96 +341,24 @@ xfs_compat_handlereq_copyin(
 	return 0;
 }
 
-/*
- * Convert userspace handle data into inode.
- *
- * We use the fact that all the fsop_handlereq ioctl calls have a data
- * structure argument whose first component is always a xfs_fsop_handlereq_t,
- * so we can pass that sub structure into this handy, shared routine.
- *
- * If no error, caller must always iput the returned inode.
- */
-STATIC int
-xfs_vget_fsop_handlereq_compat(
-	xfs_mount_t		*mp,
-	struct inode		*parinode,	/* parent inode pointer    */
-	compat_xfs_fsop_handlereq_t	*hreq,
-	struct inode		**inode)
+STATIC struct dentry *
+xfs_compat_handlereq_to_dentry(
+	struct file		*parfilp,
+	compat_xfs_fsop_handlereq_t *hreq)
 {
-	void			__user *hanp;
-	size_t			hlen;
-	xfs_fid_t		*xfid;
-	xfs_handle_t		*handlep;
-	xfs_handle_t		handle;
-	xfs_inode_t		*ip;
-	xfs_ino_t		ino;
-	__u32			igen;
-	int			error;
-
-	/*
-	 * Only allow handle opens under a directory.
-	 */
-	if (!S_ISDIR(parinode->i_mode))
-		return XFS_ERROR(ENOTDIR);
-
-	hanp = compat_ptr(hreq->ihandle);
-	hlen = hreq->ihandlen;
-	handlep = &handle;
-
-	if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep))
-		return XFS_ERROR(EINVAL);
-	if (copy_from_user(handlep, hanp, hlen))
-		return XFS_ERROR(EFAULT);
-	if (hlen < sizeof(*handlep))
-		memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
-	if (hlen > sizeof(handlep->ha_fsid)) {
-		if (handlep->ha_fid.fid_len !=
-		    (hlen - sizeof(handlep->ha_fsid) -
-			    sizeof(handlep->ha_fid.fid_len)) ||
-		    handlep->ha_fid.fid_pad)
-			return XFS_ERROR(EINVAL);
-	}
-
-	/*
-	 * Crack the handle, obtain the inode # & generation #
-	 */
-	xfid = (struct xfs_fid *)&handlep->ha_fid;
-	if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) {
-		ino  = xfid->fid_ino;
-		igen = xfid->fid_gen;
-	} else {
-		return XFS_ERROR(EINVAL);
-	}
-
-	/*
-	 * Get the XFS inode, building a Linux inode to go with it.
-	 */
-	error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
-	if (error)
-		return error;
-	if (ip == NULL)
-		return XFS_ERROR(EIO);
-	if (ip->i_d.di_gen != igen) {
-		xfs_iput_new(ip, XFS_ILOCK_SHARED);
-		return XFS_ERROR(ENOENT);
-	}
-
-	xfs_iunlock(ip, XFS_ILOCK_SHARED);
-
-	*inode = VFS_I(ip);
-	return 0;
+	return xfs_handle_to_dentry(parfilp,
+			compat_ptr(hreq->ihandle), hreq->ihandlen);
 }
 
 STATIC int
 xfs_compat_attrlist_by_handle(
-	xfs_mount_t		*mp,
-	void			__user *arg,
-	struct inode		*parinode)
+	struct file		*parfilp,
+	void			__user *arg)
 {
 	int			error;
 	attrlist_cursor_kern_t	*cursor;
 	compat_xfs_fsop_attrlist_handlereq_t al_hreq;
-	struct inode		*inode;
+	struct dentry		*dentry;
 	char			*kbuf;
 
 	if (!capable(CAP_SYS_ADMIN))
@@ -446,17 +375,17 @@ xfs_compat_attrlist_by_handle(
 	if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
 		return -XFS_ERROR(EINVAL);
 
-	error = xfs_vget_fsop_handlereq_compat(mp, parinode, &al_hreq.hreq,
-					       &inode);
-	if (error)
-		goto out;
+	dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
+	if (IS_ERR(dentry))
+		return PTR_ERR(dentry);
 
+	error = -ENOMEM;
 	kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
 	if (!kbuf)
-		goto out_vn_rele;
+		goto out_dput;
 
 	cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
-	error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen,
+	error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
 					al_hreq.flags, cursor);
 	if (error)
 		goto out_kfree;
@@ -466,22 +395,20 @@ xfs_compat_attrlist_by_handle(
 
  out_kfree:
 	kfree(kbuf);
- out_vn_rele:
-	iput(inode);
- out:
-	return -error;
+ out_dput:
+	dput(dentry);
+	return error;
 }
 
 STATIC int
 xfs_compat_attrmulti_by_handle(
-	xfs_mount_t				*mp,
-	void					__user *arg,
-	struct inode				*parinode)
+	struct file				*parfilp,
+	void					__user *arg)
 {
 	int					error;
 	compat_xfs_attr_multiop_t		*ops;
 	compat_xfs_fsop_attrmulti_handlereq_t	am_hreq;
-	struct inode				*inode;
+	struct dentry				*dentry;
 	unsigned int				i, size;
 	char					*attr_name;
 
@@ -491,20 +418,19 @@ xfs_compat_attrmulti_by_handle(
 			   sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
 		return -XFS_ERROR(EFAULT);
 
-	error = xfs_vget_fsop_handlereq_compat(mp, parinode, &am_hreq.hreq,
-					       &inode);
-	if (error)
-		goto out;
+	dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
+	if (IS_ERR(dentry))
+		return PTR_ERR(dentry);
 
 	error = E2BIG;
 	size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
 	if (!size || size > 16 * PAGE_SIZE)
-		goto out_vn_rele;
+		goto out_dput;
 
 	error = ENOMEM;
 	ops = kmalloc(size, GFP_KERNEL);
 	if (!ops)
-		goto out_vn_rele;
+		goto out_dput;
 
 	error = EFAULT;
 	if (copy_from_user(ops, compat_ptr(am_hreq.ops), size))
@@ -527,20 +453,29 @@ xfs_compat_attrmulti_by_handle(
 
 		switch (ops[i].am_opcode) {
 		case ATTR_OP_GET:
-			ops[i].am_error = xfs_attrmulti_attr_get(inode,
-					attr_name,
+			ops[i].am_error = xfs_attrmulti_attr_get(
+					dentry->d_inode, attr_name,
 					compat_ptr(ops[i].am_attrvalue),
 					&ops[i].am_length, ops[i].am_flags);
 			break;
 		case ATTR_OP_SET:
-			ops[i].am_error = xfs_attrmulti_attr_set(inode,
-					attr_name,
+			ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
+			if (ops[i].am_error)
+				break;
+			ops[i].am_error = xfs_attrmulti_attr_set(
+					dentry->d_inode, attr_name,
 					compat_ptr(ops[i].am_attrvalue),
 					ops[i].am_length, ops[i].am_flags);
+			mnt_drop_write(parfilp->f_path.mnt);
 			break;
 		case ATTR_OP_REMOVE:
-			ops[i].am_error = xfs_attrmulti_attr_remove(inode,
-					attr_name, ops[i].am_flags);
+			ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
+			if (ops[i].am_error)
+				break;
+			ops[i].am_error = xfs_attrmulti_attr_remove(
+					dentry->d_inode, attr_name,
+					ops[i].am_flags);
+			mnt_drop_write(parfilp->f_path.mnt);
 			break;
 		default:
 			ops[i].am_error = EINVAL;
@@ -553,22 +488,20 @@ xfs_compat_attrmulti_by_handle(
 	kfree(attr_name);
  out_kfree_ops:
 	kfree(ops);
- out_vn_rele:
-	iput(inode);
- out:
+ out_dput:
+	dput(dentry);
 	return -error;
 }
 
 STATIC int
 xfs_compat_fssetdm_by_handle(
-	xfs_mount_t		*mp,
-	void			__user *arg,
-	struct inode		*parinode)
+	struct file		*parfilp,
+	void			__user *arg)
 {
 	int			error;
 	struct fsdmidata	fsd;
 	compat_xfs_fsop_setdm_handlereq_t dmhreq;
-	struct inode		*inode;
+	struct dentry		*dentry;
 
 	if (!capable(CAP_MKNOD))
 		return -XFS_ERROR(EPERM);
@@ -576,12 +509,11 @@ xfs_compat_fssetdm_by_handle(
 			   sizeof(compat_xfs_fsop_setdm_handlereq_t)))
 		return -XFS_ERROR(EFAULT);
 
-	error = xfs_vget_fsop_handlereq_compat(mp, parinode, &dmhreq.hreq,
-					       &inode);
-	if (error)
-		return -error;
+	dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
+	if (IS_ERR(dentry))
+		return PTR_ERR(dentry);
 
-	if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
+	if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
 		error = -XFS_ERROR(EPERM);
 		goto out;
 	}
@@ -591,11 +523,11 @@ xfs_compat_fssetdm_by_handle(
 		goto out;
 	}
 
-	error = -xfs_set_dmattrs(XFS_I(inode), fsd.fsd_dmevmask,
+	error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
 				 fsd.fsd_dmstate);
 
 out:
-	iput(inode);
+	dput(dentry);
 	return error;
 }
 
@@ -722,21 +654,21 @@ xfs_file_compat_ioctl(
 
 		if (xfs_compat_handlereq_copyin(&hreq, arg))
 			return -XFS_ERROR(EFAULT);
-		return xfs_open_by_handle(mp, &hreq, filp, inode);
+		return xfs_open_by_handle(filp, &hreq);
 	}
 	case XFS_IOC_READLINK_BY_HANDLE_32: {
 		struct xfs_fsop_handlereq	hreq;
 
 		if (xfs_compat_handlereq_copyin(&hreq, arg))
 			return -XFS_ERROR(EFAULT);
-		return xfs_readlink_by_handle(mp, &hreq, inode);
+		return xfs_readlink_by_handle(filp, &hreq);
 	}
 	case XFS_IOC_ATTRLIST_BY_HANDLE_32:
-		return xfs_compat_attrlist_by_handle(mp, arg, inode);
+		return xfs_compat_attrlist_by_handle(filp, arg);
 	case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
-		return xfs_compat_attrmulti_by_handle(mp, arg, inode);
+		return xfs_compat_attrmulti_by_handle(filp, arg);
 	case XFS_IOC_FSSETDM_BY_HANDLE_32:
-		return xfs_compat_fssetdm_by_handle(mp, arg, inode);
+		return xfs_compat_fssetdm_by_handle(filp, arg);
 	default:
 		return -XFS_ERROR(ENOIOCTLCMD);
 	}

fs/xfs/linux-2.6/xfs_super.c

@@ -1197,6 +1197,7 @@ xfs_fs_remount(
 	struct xfs_mount	*mp = XFS_M(sb);
 	substring_t		args[MAX_OPT_ARGS];
 	char			*p;
+	int			error;
 
 	while ((p = strsep(&options, ",")) != NULL) {
 		int token;
@@ -1247,11 +1248,25 @@ xfs_fs_remount(
 		}
 	}
 
-	/* rw/ro -> rw */
+	/* ro -> rw */
 	if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) {
 		mp->m_flags &= ~XFS_MOUNT_RDONLY;
 		if (mp->m_flags & XFS_MOUNT_BARRIER)
 			xfs_mountfs_check_barriers(mp);
+
+		/*
+		 * If this is the first remount to writeable state we
+		 * might have some superblock changes to update.
+		 */
+		if (mp->m_update_flags) {
+			error = xfs_mount_log_sb(mp, mp->m_update_flags);
+			if (error) {
+				cmn_err(CE_WARN,
+					"XFS: failed to write sb changes");
+				return error;
+			}
+			mp->m_update_flags = 0;
+		}
 	}
 
 	/* rw -> ro */

fs/xfs/quota/xfs_dquot.c

@@ -73,6 +73,8 @@ int xfs_dqreq_num;
 int xfs_dqerror_mod = 33;
 #endif
 
+static struct lock_class_key xfs_dquot_other_class;
+
 /*
  * Allocate and initialize a dquot. We don't always allocate fresh memory;
  * we try to reclaim a free dquot if the number of incore dquots are above
@@ -139,7 +141,15 @@ xfs_qm_dqinit(
 		 ASSERT(dqp->q_trace);
 		 xfs_dqtrace_entry(dqp, "DQRECLAIMED_INIT");
 #endif
-	 }
+	}
+
+	/*
+	 * In either case we need to make sure group quotas have a different
+	 * lock class than user quotas, to make sure lockdep knows we can
+	 * locks of one of each at the same time.
+	 */
+	if (!(type & XFS_DQ_USER))
+		lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class);
 
 	/*
 	 * log item gets initialized later
@@ -421,7 +431,7 @@ xfs_qm_dqalloc(
 	/*
 	 * Initialize the bmap freelist prior to calling bmapi code.
 	 */
-	XFS_BMAP_INIT(&flist, &firstblock);
+	xfs_bmap_init(&flist, &firstblock);
 	xfs_ilock(quotip, XFS_ILOCK_EXCL);
 	/*
 	 * Return if this type of quotas is turned off while we didn't
@@ -1383,6 +1393,12 @@ xfs_dqunlock_nonotify(
 	mutex_unlock(&(dqp->q_qlock));
 }
 
+/*
+ * Lock two xfs_dquot structures.
+ *
+ * To avoid deadlocks we always lock the quota structure with
+ * the lowerd id first.
+ */
 void
 xfs_dqlock2(
 	xfs_dquot_t	*d1,
@@ -1392,18 +1408,16 @@ xfs_dqlock2(
 		ASSERT(d1 != d2);
 		if (be32_to_cpu(d1->q_core.d_id) >
 		    be32_to_cpu(d2->q_core.d_id)) {
-			xfs_dqlock(d2);
-			xfs_dqlock(d1);
+			mutex_lock(&d2->q_qlock);
+			mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED);
 		} else {
-			xfs_dqlock(d1);
-			xfs_dqlock(d2);
-		}
-	} else {
-		if (d1) {
-			xfs_dqlock(d1);
-		} else if (d2) {
-			xfs_dqlock(d2);
+			mutex_lock(&d1->q_qlock);
+			mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED);
 		}
+	} else if (d1) {
+		mutex_lock(&d1->q_qlock);
+	} else if (d2) {
+		mutex_lock(&d2->q_qlock);
 	}
 }
 

fs/xfs/quota/xfs_dquot.h

@@ -97,6 +97,16 @@ typedef struct xfs_dquot {
 #define dq_hashlist	q_lists.dqm_hashlist
 #define dq_flags	q_lists.dqm_flags
 
+/*
+ * Lock hierachy for q_qlock:
+ *	XFS_QLOCK_NORMAL is the implicit default,
+ * 	XFS_QLOCK_NESTED is the dquot with the higher id in xfs_dqlock2
+ */
+enum {
+	XFS_QLOCK_NORMAL = 0,
+	XFS_QLOCK_NESTED,
+};
+
 #define XFS_DQHOLD(dqp)		((dqp)->q_nrefs++)
 
 #ifdef DEBUG

fs/xfs/quota/xfs_qm.c

@@ -1070,6 +1070,13 @@ xfs_qm_sync(
 	return 0;
 }
 
+/*
+ * The hash chains and the mplist use the same xfs_dqhash structure as
+ * their list head, but we can take the mplist qh_lock and one of the
+ * hash qh_locks at the same time without any problem as they aren't
+ * related.
+ */
+static struct lock_class_key xfs_quota_mplist_class;
 
 /*
  * This initializes all the quota information that's kept in the
@@ -1105,6 +1112,8 @@ xfs_qm_init_quotainfo(
 	}
 
 	xfs_qm_list_init(&qinf->qi_dqlist, "mpdqlist", 0);
+	lockdep_set_class(&qinf->qi_dqlist.qh_lock, &xfs_quota_mplist_class);
+
 	qinf->qi_dqreclaims = 0;
 
 	/* mutex used to serialize quotaoffs */

fs/xfs/xfs_ag.h

@@ -244,8 +244,8 @@ typedef struct xfs_perag
 #define	XFS_AG_CHECK_DADDR(mp,d,len)	\
 	((len) == 1 ? \
 	    ASSERT((d) == XFS_SB_DADDR || \
-		   XFS_DADDR_TO_AGBNO(mp, d) != XFS_SB_DADDR) : \
-	    ASSERT(XFS_DADDR_TO_AGNO(mp, d) == \
-		   XFS_DADDR_TO_AGNO(mp, (d) + (len) - 1)))
+		   xfs_daddr_to_agbno(mp, d) != XFS_SB_DADDR) : \
+	    ASSERT(xfs_daddr_to_agno(mp, d) == \
+		   xfs_daddr_to_agno(mp, (d) + (len) - 1)))
 
 #endif	/* __XFS_AG_H__ */

fs/xfs/xfs_alloc_btree.c

@@ -115,7 +115,7 @@ xfs_allocbt_free_block(
 	xfs_agblock_t		bno;
 	int			error;
 
-	bno = XFS_DADDR_TO_AGBNO(cur->bc_mp, XFS_BUF_ADDR(bp));
+	bno = xfs_daddr_to_agbno(cur->bc_mp, XFS_BUF_ADDR(bp));
 	error = xfs_alloc_put_freelist(cur->bc_tp, agbp, NULL, bno, 1);
 	if (error)
 		return error;

fs/xfs/xfs_attr.c

@@ -374,7 +374,7 @@ xfs_attr_set_int(xfs_inode_t *dp, struct xfs_name *name,
 		 * It won't fit in the shortform, transform to a leaf block.
 		 * GROT: another possible req'mt for a double-split btree op.
 		 */
-		XFS_BMAP_INIT(args.flist, args.firstblock);
+		xfs_bmap_init(args.flist, args.firstblock);
 		error = xfs_attr_shortform_to_leaf(&args);
 		if (!error) {
 			error = xfs_bmap_finish(&args.trans, args.flist,
@@ -956,7 +956,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		 * Commit that transaction so that the node_addname() call
 		 * can manage its own transactions.
 		 */
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		error = xfs_attr_leaf_to_node(args);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
@@ -1057,7 +1057,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		 * If the result is small enough, shrink it all into the inode.
 		 */
 		if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
-			XFS_BMAP_INIT(args->flist, args->firstblock);
+			xfs_bmap_init(args->flist, args->firstblock);
 			error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
 			/* bp is gone due to xfs_da_shrink_inode */
 			if (!error) {
@@ -1135,7 +1135,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
 	 * If the result is small enough, shrink it all into the inode.
 	 */
 	if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
 		/* bp is gone due to xfs_da_shrink_inode */
 		if (!error) {
@@ -1290,7 +1290,7 @@ restart:
 			 * have been a b-tree.
 			 */
 			xfs_da_state_free(state);
-			XFS_BMAP_INIT(args->flist, args->firstblock);
+			xfs_bmap_init(args->flist, args->firstblock);
 			error = xfs_attr_leaf_to_node(args);
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
@@ -1331,7 +1331,7 @@ restart:
 		 * in the index/blkno/rmtblkno/rmtblkcnt fields and
 		 * in the index2/blkno2/rmtblkno2/rmtblkcnt2 fields.
 		 */
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		error = xfs_da_split(state);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
@@ -1443,7 +1443,7 @@ restart:
 		 * Check to see if the tree needs to be collapsed.
 		 */
 		if (retval && (state->path.active > 1)) {
-			XFS_BMAP_INIT(args->flist, args->firstblock);
+			xfs_bmap_init(args->flist, args->firstblock);
 			error = xfs_da_join(state);
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
@@ -1579,7 +1579,7 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 	 * Check to see if the tree needs to be collapsed.
 	 */
 	if (retval && (state->path.active > 1)) {
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		error = xfs_da_join(state);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
@@ -1630,7 +1630,7 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 						       == XFS_ATTR_LEAF_MAGIC);
 
 		if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
-			XFS_BMAP_INIT(args->flist, args->firstblock);
+			xfs_bmap_init(args->flist, args->firstblock);
 			error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
 			/* bp is gone due to xfs_da_shrink_inode */
 			if (!error) {
@@ -2069,7 +2069,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
 		/*
 		 * Allocate a single extent, up to the size of the value.
 		 */
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		nmap = 1;
 		error = xfs_bmapi(args->trans, dp, (xfs_fileoff_t)lblkno,
 				  blkcnt,
@@ -2123,7 +2123,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
 		/*
 		 * Try to remember where we decided to put the value.
 		 */
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		nmap = 1;
 		error = xfs_bmapi(NULL, dp, (xfs_fileoff_t)lblkno,
 				  args->rmtblkcnt,
@@ -2188,7 +2188,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args)
 		/*
 		 * Try to remember where we decided to put the value.
 		 */
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		nmap = 1;
 		error = xfs_bmapi(NULL, args->dp, (xfs_fileoff_t)lblkno,
 					args->rmtblkcnt,
@@ -2229,7 +2229,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args)
 	blkcnt = args->rmtblkcnt;
 	done = 0;
 	while (!done) {
-		XFS_BMAP_INIT(args->flist, args->firstblock);
+		xfs_bmap_init(args->flist, args->firstblock);
 		error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt,
 				    XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
 				    1, args->firstblock, args->flist,

fs/xfs/xfs_bmap.h

@@ -95,7 +95,6 @@ typedef	struct xfs_bmap_free
 					/* need write cache flushing and no */
 					/* additional allocation alignments */
 
-#define	XFS_BMAPI_AFLAG(w)	xfs_bmapi_aflag(w)
 static inline int xfs_bmapi_aflag(int w)
 {
 	return (w == XFS_ATTR_FORK ? XFS_BMAPI_ATTRFORK : 0);
@@ -107,7 +106,6 @@ static inline int xfs_bmapi_aflag(int w)
 #define	DELAYSTARTBLOCK		((xfs_fsblock_t)-1LL)
 #define	HOLESTARTBLOCK		((xfs_fsblock_t)-2LL)
 
-#define	XFS_BMAP_INIT(flp,fbp)	xfs_bmap_init(flp,fbp)
 static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp)
 {
 	((flp)->xbf_first = NULL, (flp)->xbf_count = 0, \

fs/xfs/xfs_bmap_btree.c

@@ -121,7 +121,7 @@ __xfs_bmbt_get_all(
 
 		b = (((xfs_dfsbno_t)l0 & xfs_mask64lo(9)) << 43) |
 		    (((xfs_dfsbno_t)l1) >> 21);
-		ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b));
+		ASSERT((b >> 32) == 0 || isnulldstartblock(b));
 		s->br_startblock = (xfs_fsblock_t)b;
 	}
 #else	/* !DEBUG */
@@ -172,7 +172,7 @@ xfs_bmbt_get_startblock(
 
 	b = (((xfs_dfsbno_t)r->l0 & xfs_mask64lo(9)) << 43) |
 	    (((xfs_dfsbno_t)r->l1) >> 21);
-	ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b));
+	ASSERT((b >> 32) == 0 || isnulldstartblock(b));
 	return (xfs_fsblock_t)b;
 #else	/* !DEBUG */
 	return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21);
@@ -261,7 +261,7 @@ xfs_bmbt_set_allf(
 		((xfs_bmbt_rec_base_t)blockcount &
 		(xfs_bmbt_rec_base_t)xfs_mask64lo(21));
 #else	/* !XFS_BIG_BLKNOS */
-	if (ISNULLSTARTBLOCK(startblock)) {
+	if (isnullstartblock(startblock)) {
 		r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) |
 			((xfs_bmbt_rec_base_t)startoff << 9) |
 			 (xfs_bmbt_rec_base_t)xfs_mask64lo(9);
@@ -321,7 +321,7 @@ xfs_bmbt_disk_set_allf(
 		 ((xfs_bmbt_rec_base_t)blockcount &
 		  (xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
 #else	/* !XFS_BIG_BLKNOS */
-	if (ISNULLSTARTBLOCK(startblock)) {
+	if (isnullstartblock(startblock)) {
 		r->l0 = cpu_to_be64(
 			((xfs_bmbt_rec_base_t)extent_flag << 63) |
 			 ((xfs_bmbt_rec_base_t)startoff << 9) |
@@ -382,7 +382,7 @@ xfs_bmbt_set_startblock(
 	r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21)) |
 		  (xfs_bmbt_rec_base_t)(v << 21);
 #else	/* !XFS_BIG_BLKNOS */
-	if (ISNULLSTARTBLOCK(v)) {
+	if (isnullstartblock(v)) {
 		r->l0 |= (xfs_bmbt_rec_base_t)xfs_mask64lo(9);
 		r->l1 = (xfs_bmbt_rec_base_t)xfs_mask64hi(11) |
 			  ((xfs_bmbt_rec_base_t)v << 21) |

fs/xfs/xfs_bmap_btree.h

@@ -76,26 +76,22 @@ typedef struct xfs_bmbt_rec_host {
 #define DSTARTBLOCKMASK		\
 	(((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
 
-#define ISNULLSTARTBLOCK(x)	isnullstartblock(x)
 static inline int isnullstartblock(xfs_fsblock_t x)
 {
 	return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
 }
 
-#define ISNULLDSTARTBLOCK(x)	isnulldstartblock(x)
 static inline int isnulldstartblock(xfs_dfsbno_t x)
 {
 	return ((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK;
 }
 
-#define NULLSTARTBLOCK(k)	nullstartblock(k)
 static inline xfs_fsblock_t nullstartblock(int k)
 {
 	ASSERT(k < (1 << STARTBLOCKVALBITS));
 	return STARTBLOCKMASK | (k);
 }
 
-#define STARTBLOCKVAL(x)	startblockval(x)
 static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
 {
 	return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);

fs/xfs/xfs_btree.c

@@ -843,7 +843,7 @@ xfs_btree_ptr_is_null(
 	union xfs_btree_ptr	*ptr)
 {
 	if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
-		return be64_to_cpu(ptr->l) == NULLFSBLOCK;
+		return be64_to_cpu(ptr->l) == NULLDFSBNO;
 	else
 		return be32_to_cpu(ptr->s) == NULLAGBLOCK;
 }
@@ -854,7 +854,7 @@ xfs_btree_set_ptr_null(
 	union xfs_btree_ptr	*ptr)
 {
 	if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
-		ptr->l = cpu_to_be64(NULLFSBLOCK);
+		ptr->l = cpu_to_be64(NULLDFSBNO);
 	else
 		ptr->s = cpu_to_be32(NULLAGBLOCK);
 }
@@ -918,8 +918,8 @@ xfs_btree_init_block(
 	new->bb_numrecs = cpu_to_be16(numrecs);
 
 	if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
-		new->bb_u.l.bb_leftsib = cpu_to_be64(NULLFSBLOCK);
-		new->bb_u.l.bb_rightsib = cpu_to_be64(NULLFSBLOCK);
+		new->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
+		new->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
 	} else {
 		new->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
 		new->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
@@ -960,7 +960,7 @@ xfs_btree_buf_to_ptr(
 		ptr->l = cpu_to_be64(XFS_DADDR_TO_FSB(cur->bc_mp,
 					XFS_BUF_ADDR(bp)));
 	else {
-		ptr->s = cpu_to_be32(XFS_DADDR_TO_AGBNO(cur->bc_mp,
+		ptr->s = cpu_to_be32(xfs_daddr_to_agbno(cur->bc_mp,
 					XFS_BUF_ADDR(bp)));
 	}
 }
@@ -971,7 +971,7 @@ xfs_btree_ptr_to_daddr(
 	union xfs_btree_ptr	*ptr)
 {
 	if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
-		ASSERT(be64_to_cpu(ptr->l) != NULLFSBLOCK);
+		ASSERT(be64_to_cpu(ptr->l) != NULLDFSBNO);
 
 		return XFS_FSB_TO_DADDR(cur->bc_mp, be64_to_cpu(ptr->l));
 	} else {
@@ -2454,7 +2454,7 @@ xfs_btree_new_iroot(
 	xfs_btree_log_ptrs(cur, cbp, 1, be16_to_cpu(cblock->bb_numrecs));
 
 	*logflags |=
-		XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork);
+		XFS_ILOG_CORE | xfs_ilog_fbroot(cur->bc_private.b.whichfork);
 	*stat = 1;
 	XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
 	return 0;
@@ -3048,7 +3048,7 @@ xfs_btree_kill_iroot(
 	cur->bc_bufs[level - 1] = NULL;
 	be16_add_cpu(&block->bb_level, -1);
 	xfs_trans_log_inode(cur->bc_tp, ip,
-		XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork));
+		XFS_ILOG_CORE | xfs_ilog_fbroot(cur->bc_private.b.whichfork));
 	cur->bc_nlevels--;
 out0:
 	XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);

fs/xfs/xfs_da_btree.c

@@ -1597,7 +1597,7 @@ xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
 	nmap = 1;
 	ASSERT(args->firstblock != NULL);
 	if ((error = xfs_bmapi(tp, dp, bno, count,
-			XFS_BMAPI_AFLAG(w)|XFS_BMAPI_WRITE|XFS_BMAPI_METADATA|
+			xfs_bmapi_aflag(w)|XFS_BMAPI_WRITE|XFS_BMAPI_METADATA|
 			XFS_BMAPI_CONTIG,
 			args->firstblock, args->total, &map, &nmap,
 			args->flist, NULL))) {
@@ -1618,7 +1618,7 @@ xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
 			nmap = MIN(XFS_BMAP_MAX_NMAP, count);
 			c = (int)(bno + count - b);
 			if ((error = xfs_bmapi(tp, dp, b, c,
-					XFS_BMAPI_AFLAG(w)|XFS_BMAPI_WRITE|
+					xfs_bmapi_aflag(w)|XFS_BMAPI_WRITE|
 					XFS_BMAPI_METADATA,
 					args->firstblock, args->total,
 					&mapp[mapi], &nmap, args->flist,
@@ -1882,7 +1882,7 @@ xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
 		 * the last block to the place we want to kill.
 		 */
 		if ((error = xfs_bunmapi(tp, dp, dead_blkno, count,
-				XFS_BMAPI_AFLAG(w)|XFS_BMAPI_METADATA,
+				xfs_bmapi_aflag(w)|XFS_BMAPI_METADATA,
 				0, args->firstblock, args->flist, NULL,
 				&done)) == ENOSPC) {
 			if (w != XFS_DATA_FORK)
@@ -1987,7 +1987,7 @@ xfs_da_do_buf(
 			if ((error = xfs_bmapi(trans, dp, (xfs_fileoff_t)bno,
 					nfsb,
 					XFS_BMAPI_METADATA |
-						XFS_BMAPI_AFLAG(whichfork),
+						xfs_bmapi_aflag(whichfork),
 					NULL, 0, mapp, &nmap, NULL, NULL)))
 				goto exit0;
 		}

fs/xfs/xfs_ialloc.c

@@ -357,7 +357,7 @@ xfs_ialloc_ag_alloc(
 			int	ioffset = i << args.mp->m_sb.sb_inodelog;
 			uint	isize = sizeof(struct xfs_dinode);
 
-			free = XFS_MAKE_IPTR(args.mp, fbuf, i);
+			free = xfs_make_iptr(args.mp, fbuf, i);
 			free->di_magic = cpu_to_be16(XFS_DINODE_MAGIC);
 			free->di_version = version;
 			free->di_gen = cpu_to_be32(gen);
@@ -937,7 +937,7 @@ nextag:
 			}
 		}
 	}
-	offset = XFS_IALLOC_FIND_FREE(&rec.ir_free);
+	offset = xfs_ialloc_find_free(&rec.ir_free);
 	ASSERT(offset >= 0);
 	ASSERT(offset < XFS_INODES_PER_CHUNK);
 	ASSERT((XFS_AGINO_TO_OFFSET(mp, rec.ir_startino) %
@@ -1279,7 +1279,7 @@ xfs_imap(
 		offset = XFS_INO_TO_OFFSET(mp, ino);
 		ASSERT(offset < mp->m_sb.sb_inopblock);
 
-		cluster_agbno = XFS_DADDR_TO_AGBNO(mp, imap->im_blkno);
+		cluster_agbno = xfs_daddr_to_agbno(mp, imap->im_blkno);
 		offset += (agbno - cluster_agbno) * mp->m_sb.sb_inopblock;
 
 		imap->im_len = XFS_FSB_TO_BB(mp, blks_per_cluster);

fs/xfs/xfs_ialloc.h

@@ -39,7 +39,6 @@ struct xfs_trans;
 /*
  * Make an inode pointer out of the buffer/offset.
  */
-#define	XFS_MAKE_IPTR(mp,b,o)		xfs_make_iptr(mp,b,o)
 static inline struct xfs_dinode *
 xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o)
 {
@@ -50,7 +49,6 @@ xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o)
 /*
  * Find a free (set) bit in the inode bitmask.
  */
-#define	XFS_IALLOC_FIND_FREE(fp)	xfs_ialloc_find_free(fp)
 static inline int xfs_ialloc_find_free(xfs_inofree_t *fp)
 {
 	return xfs_lowbit64(*fp);

fs/xfs/xfs_ialloc_btree.h

@@ -36,7 +36,6 @@ typedef	__uint64_t	xfs_inofree_t;
 #define	XFS_INODES_PER_CHUNK_LOG	(XFS_NBBYLOG + 3)
 #define	XFS_INOBT_ALL_FREE	((xfs_inofree_t)-1)
 
-#define	XFS_INOBT_MASKN(i,n)		xfs_inobt_maskn(i,n)
 static inline xfs_inofree_t xfs_inobt_maskn(int i, int n)
 {
 	return (((n) >= XFS_INODES_PER_CHUNK ? \

fs/xfs/xfs_inode.c

@@ -424,6 +424,19 @@ xfs_iformat(
 	case XFS_DINODE_FMT_LOCAL:
 		atp = (xfs_attr_shortform_t *)XFS_DFORK_APTR(dip);
 		size = be16_to_cpu(atp->hdr.totsize);
+
+		if (unlikely(size < sizeof(struct xfs_attr_sf_hdr))) {
+			xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
+				"corrupt inode %Lu "
+				"(bad attr fork size %Ld).",
+				(unsigned long long) ip->i_ino,
+				(long long) size);
+			XFS_CORRUPTION_ERROR("xfs_iformat(8)",
+					     XFS_ERRLEVEL_LOW,
+					     ip->i_mount, dip);
+			return XFS_ERROR(EFSCORRUPTED);
+		}
+
 		error = xfs_iformat_local(ip, dip, XFS_ATTR_FORK, size);
 		break;
 	case XFS_DINODE_FMT_EXTENTS:
@@ -1601,10 +1614,10 @@ xfs_itruncate_finish(
 		 * in this file with garbage in them once recovery
 		 * runs.
 		 */
-		XFS_BMAP_INIT(&free_list, &first_block);
+		xfs_bmap_init(&free_list, &first_block);
 		error = xfs_bunmapi(ntp, ip,
 				    first_unmap_block, unmap_len,
-				    XFS_BMAPI_AFLAG(fork) |
+				    xfs_bmapi_aflag(fork) |
 				      (sync ? 0 : XFS_BMAPI_ASYNC),
 				    XFS_ITRUNC_MAX_EXTENTS,
 				    &first_block, &free_list,
@@ -2557,7 +2570,7 @@ xfs_iextents_copy(
 	for (i = 0; i < nrecs; i++) {
 		xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i);
 		start_block = xfs_bmbt_get_startblock(ep);
-		if (ISNULLSTARTBLOCK(start_block)) {
+		if (isnullstartblock(start_block)) {
 			/*
 			 * It's a delayed allocation extent, so skip it.
 			 */

fs/xfs/xfs_inode_item.h

@@ -111,20 +111,16 @@ typedef struct xfs_inode_log_format_64 {
 
 #define	XFS_ILI_IOLOCKED_ANY   (XFS_ILI_IOLOCKED_EXCL | XFS_ILI_IOLOCKED_SHARED)
 
-
-#define	XFS_ILOG_FBROOT(w)	xfs_ilog_fbroot(w)
 static inline int xfs_ilog_fbroot(int w)
 {
 	return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
 }
 
-#define	XFS_ILOG_FEXT(w)	xfs_ilog_fext(w)
 static inline int xfs_ilog_fext(int w)
 {
 	return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
 }
 
-#define	XFS_ILOG_FDATA(w)	xfs_ilog_fdata(w)
 static inline int xfs_ilog_fdata(int w)
 {
 	return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);

fs/xfs/xfs_iomap.c

@@ -155,7 +155,7 @@ xfs_imap_to_bmap(
 			iomapp->iomap_bn = IOMAP_DADDR_NULL;
 			iomapp->iomap_flags |= IOMAP_DELAY;
 		} else {
-			iomapp->iomap_bn = XFS_FSB_TO_DB(ip, start_block);
+			iomapp->iomap_bn = xfs_fsb_to_db(ip, start_block);
 			if (ISUNWRITTEN(imap))
 				iomapp->iomap_flags |= IOMAP_UNWRITTEN;
 		}
@@ -261,7 +261,7 @@ xfs_iomap(
 		xfs_iunlock(ip, lockmode);
 		lockmode = 0;
 
-		if (nimaps && !ISNULLSTARTBLOCK(imap.br_startblock)) {
+		if (nimaps && !isnullstartblock(imap.br_startblock)) {
 			xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, ip,
 					offset, count, iomapp, &imap, flags);
 			break;
@@ -491,7 +491,7 @@ xfs_iomap_write_direct(
 	/*
 	 * Issue the xfs_bmapi() call to allocate the blocks
 	 */
-	XFS_BMAP_INIT(&free_list, &firstfsb);
+	xfs_bmap_init(&free_list, &firstfsb);
 	nimaps = 1;
 	error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, bmapi_flag,
 		&firstfsb, 0, &imap, &nimaps, &free_list, NULL);
@@ -751,7 +751,7 @@ xfs_iomap_write_allocate(
 			xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
 			xfs_trans_ihold(tp, ip);
 
-			XFS_BMAP_INIT(&free_list, &first_block);
+			xfs_bmap_init(&free_list, &first_block);
 
 			/*
 			 * it is possible that the extents have changed since
@@ -911,7 +911,7 @@ xfs_iomap_write_unwritten(
 		/*
 		 * Modify the unwritten extent state of the buffer.
 		 */
-		XFS_BMAP_INIT(&free_list, &firstfsb);
+		xfs_bmap_init(&free_list, &firstfsb);
 		nimaps = 1;
 		error = xfs_bmapi(tp, ip, offset_fsb, count_fsb,
 				  XFS_BMAPI_WRITE|XFS_BMAPI_CONVERT, &firstfsb,

fs/xfs/xfs_itable.c

@@ -453,7 +453,7 @@ xfs_bulkstat(
 			    (chunkidx = agino - gino + 1) <
 				    XFS_INODES_PER_CHUNK &&
 					/* there are some left allocated */
-			    XFS_INOBT_MASKN(chunkidx,
+			    xfs_inobt_maskn(chunkidx,
 				    XFS_INODES_PER_CHUNK - chunkidx) & ~gfree) {
 				/*
 				 * Grab the chunk record.  Mark all the
@@ -464,7 +464,7 @@ xfs_bulkstat(
 					if (XFS_INOBT_MASK(i) & ~gfree)
 						gcnt++;
 				}
-				gfree |= XFS_INOBT_MASKN(0, chunkidx);
+				gfree |= xfs_inobt_maskn(0, chunkidx);
 				irbp->ir_startino = gino;
 				irbp->ir_freecount = gcnt;
 				irbp->ir_free = gfree;
@@ -535,7 +535,7 @@ xfs_bulkstat(
 				     chunkidx < XFS_INODES_PER_CHUNK;
 				     chunkidx += nicluster,
 				     agbno += nbcluster) {
-					if (XFS_INOBT_MASKN(chunkidx,
+					if (xfs_inobt_maskn(chunkidx,
 							    nicluster) & ~gfree)
 						xfs_btree_reada_bufs(mp, agno,
 							agbno, nbcluster);

fs/xfs/xfs_mount.c

@@ -45,7 +45,6 @@
 #include "xfs_fsops.h"
 #include "xfs_utils.h"
 
-STATIC int	xfs_mount_log_sb(xfs_mount_t *, __int64_t);
 STATIC int	xfs_uuid_mount(xfs_mount_t *);
 STATIC void	xfs_unmountfs_wait(xfs_mount_t *);
 
@@ -682,7 +681,7 @@ xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount)
  * Update alignment values based on mount options and sb values
  */
 STATIC int
-xfs_update_alignment(xfs_mount_t *mp, __uint64_t *update_flags)
+xfs_update_alignment(xfs_mount_t *mp)
 {
 	xfs_sb_t	*sbp = &(mp->m_sb);
 
@@ -736,11 +735,11 @@ xfs_update_alignment(xfs_mount_t *mp, __uint64_t *update_flags)
 		if (xfs_sb_version_hasdalign(sbp)) {
 			if (sbp->sb_unit != mp->m_dalign) {
 				sbp->sb_unit = mp->m_dalign;
-				*update_flags |= XFS_SB_UNIT;
+				mp->m_update_flags |= XFS_SB_UNIT;
 			}
 			if (sbp->sb_width != mp->m_swidth) {
 				sbp->sb_width = mp->m_swidth;
-				*update_flags |= XFS_SB_WIDTH;
+				mp->m_update_flags |= XFS_SB_WIDTH;
 			}
 		}
 	} else if ((mp->m_flags & XFS_MOUNT_NOALIGN) != XFS_MOUNT_NOALIGN &&
@@ -905,7 +904,6 @@ xfs_mountfs(
 	xfs_sb_t	*sbp = &(mp->m_sb);
 	xfs_inode_t	*rip;
 	__uint64_t	resblks;
-	__int64_t	update_flags = 0LL;
 	uint		quotamount, quotaflags;
 	int		uuid_mounted = 0;
 	int		error = 0;
@@ -933,7 +931,7 @@ xfs_mountfs(
 			"XFS: correcting sb_features alignment problem");
 		sbp->sb_features2 |= sbp->sb_bad_features2;
 		sbp->sb_bad_features2 = sbp->sb_features2;
-		update_flags |= XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2;
+		mp->m_update_flags |= XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2;
 
 		/*
 		 * Re-check for ATTR2 in case it was found in bad_features2
@@ -947,11 +945,11 @@ xfs_mountfs(
 	if (xfs_sb_version_hasattr2(&mp->m_sb) &&
 	   (mp->m_flags & XFS_MOUNT_NOATTR2)) {
 		xfs_sb_version_removeattr2(&mp->m_sb);
-		update_flags |= XFS_SB_FEATURES2;
+		mp->m_update_flags |= XFS_SB_FEATURES2;
 
 		/* update sb_versionnum for the clearing of the morebits */
 		if (!sbp->sb_features2)
-			update_flags |= XFS_SB_VERSIONNUM;
+			mp->m_update_flags |= XFS_SB_VERSIONNUM;
 	}
 
 	/*
@@ -960,7 +958,7 @@ xfs_mountfs(
 	 * allocator alignment is within an ag, therefore ag has
 	 * to be aligned at stripe boundary.
 	 */
-	error = xfs_update_alignment(mp, &update_flags);
+	error = xfs_update_alignment(mp);
 	if (error)
 		goto error1;
 
@@ -1137,10 +1135,12 @@ xfs_mountfs(
 	}
 
 	/*
-	 * If fs is not mounted readonly, then update the superblock changes.
+	 * If this is a read-only mount defer the superblock updates until
+	 * the next remount into writeable mode.  Otherwise we would never
+	 * perform the update e.g. for the root filesystem.
 	 */
-	if (update_flags && !(mp->m_flags & XFS_MOUNT_RDONLY)) {
-		error = xfs_mount_log_sb(mp, update_flags);
+	if (mp->m_update_flags && !(mp->m_flags & XFS_MOUNT_RDONLY)) {
+		error = xfs_mount_log_sb(mp, mp->m_update_flags);
 		if (error) {
 			cmn_err(CE_WARN, "XFS: failed to write sb changes");
 			goto error4;
@@ -1820,7 +1820,7 @@ xfs_uuid_mount(
  * be altered by the mount options, as well as any potential sb_features2
  * fixup. Only the first superblock is updated.
  */
-STATIC int
+int
 xfs_mount_log_sb(
 	xfs_mount_t	*mp,
 	__int64_t	fields)

fs/xfs/xfs_mount.h

@@ -44,9 +44,9 @@ typedef struct xfs_trans_reservations {
 
 #ifndef __KERNEL__
 
-#define XFS_DADDR_TO_AGNO(mp,d) \
+#define xfs_daddr_to_agno(mp,d) \
 	((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
-#define XFS_DADDR_TO_AGBNO(mp,d) \
+#define xfs_daddr_to_agbno(mp,d) \
 	((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
 
 #else /* __KERNEL__ */
@@ -327,6 +327,8 @@ typedef struct xfs_mount {
 	spinlock_t		m_sync_lock;	/* work item list lock */
 	int			m_sync_seq;	/* sync thread generation no. */
 	wait_queue_head_t	m_wait_single_sync_task;
+	__int64_t		m_update_flags;	/* sb flags we need to update
+						   on the next remount,rw */
 } xfs_mount_t;
 
 /*
@@ -439,7 +441,6 @@ void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
  */
 #define XFS_MFSI_QUIET		0x40	/* Be silent if mount errors found */
 
-#define XFS_DADDR_TO_AGNO(mp,d)         xfs_daddr_to_agno(mp,d)
 static inline xfs_agnumber_t
 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
 {
@@ -448,7 +449,6 @@ xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
 	return (xfs_agnumber_t) ld;
 }
 
-#define XFS_DADDR_TO_AGBNO(mp,d)        xfs_daddr_to_agbno(mp,d)
 static inline xfs_agblock_t
 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
 {
@@ -514,6 +514,7 @@ extern int	xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
 			int64_t, int);
 extern int	xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
 			uint, int);
+extern int	xfs_mount_log_sb(xfs_mount_t *, __int64_t);
 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
 extern int	xfs_readsb(xfs_mount_t *, int);
 extern void	xfs_freesb(xfs_mount_t *);

fs/xfs/xfs_rename.c

@@ -147,7 +147,7 @@ xfs_rename(
 	xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip,
 				inodes, &num_inodes);
 
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 	tp = xfs_trans_alloc(mp, XFS_TRANS_RENAME);
 	cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
 	spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len);

fs/xfs/xfs_rtalloc.c

@@ -120,7 +120,7 @@ xfs_growfs_rt_alloc(
 		if ((error = xfs_trans_iget(mp, tp, ino, 0,
 						XFS_ILOCK_EXCL, &ip)))
 			goto error_cancel;
-		XFS_BMAP_INIT(&flist, &firstblock);
+		xfs_bmap_init(&flist, &firstblock);
 		/*
 		 * Allocate blocks to the bitmap file.
 		 */

fs/xfs/xfs_rw.h

@@ -28,7 +28,6 @@ struct xfs_mount;
  * file is a real time file or not, because the bmap code
  * does.
  */
-#define	XFS_FSB_TO_DB(ip,fsb)	xfs_fsb_to_db(ip,fsb)
 static inline xfs_daddr_t
 xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
 {

fs/xfs/xfs_sb.h

@@ -505,7 +505,7 @@ static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp)
 
 #define	XFS_HDR_BLOCK(mp,d)	((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
 #define	XFS_DADDR_TO_FSB(mp,d)	XFS_AGB_TO_FSB(mp, \
-			XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
+			xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
 #define	XFS_FSB_TO_DADDR(mp,fsbno)	XFS_AGB_TO_DADDR(mp, \
 			XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
 

fs/xfs/xfs_vnodeops.c

@@ -862,7 +862,7 @@ xfs_inactive_symlink_rmt(
 	 * Find the block(s) so we can inval and unmap them.
 	 */
 	done = 0;
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 	nmaps = ARRAY_SIZE(mval);
 	if ((error = xfs_bmapi(tp, ip, 0, XFS_B_TO_FSB(mp, size),
 			XFS_BMAPI_METADATA, &first_block, 0, mval, &nmaps,
@@ -1288,7 +1288,7 @@ xfs_inactive(
 	/*
 	 * Free the inode.
 	 */
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 	error = xfs_ifree(tp, ip, &free_list);
 	if (error) {
 		/*
@@ -1461,7 +1461,7 @@ xfs_create(
 	xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
 	unlock_dp_on_error = B_TRUE;
 
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 
 	ASSERT(ip == NULL);
 
@@ -1879,7 +1879,7 @@ xfs_remove(
 		}
 	}
 
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 	error = xfs_dir_removename(tp, dp, name, ip->i_ino,
 					&first_block, &free_list, resblks);
 	if (error) {
@@ -2059,7 +2059,7 @@ xfs_link(
 	if (error)
 		goto error_return;
 
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 
 	error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
 					&first_block, &free_list, resblks);
@@ -2231,7 +2231,7 @@ xfs_mkdir(
 	xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
 	unlock_dp_on_error = B_FALSE;
 
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 
 	error = xfs_dir_createname(tp, dp, dir_name, cdp->i_ino,
 					&first_block, &free_list, resblks ?
@@ -2438,7 +2438,7 @@ xfs_symlink(
 	 * Initialize the bmap freelist prior to calling either
 	 * bmapi or the directory create code.
 	 */
-	XFS_BMAP_INIT(&free_list, &first_block);
+	xfs_bmap_init(&free_list, &first_block);
 
 	/*
 	 * Allocate an inode for the symlink.
@@ -2860,7 +2860,7 @@ retry:
 		/*
 		 * Issue the xfs_bmapi() call to allocate the blocks
 		 */
-		XFS_BMAP_INIT(&free_list, &firstfsb);
+		xfs_bmap_init(&free_list, &firstfsb);
 		error = xfs_bmapi(tp, ip, startoffset_fsb,
 				  allocatesize_fsb, bmapi_flag,
 				  &firstfsb, 0, imapp, &nimaps,
@@ -2980,7 +2980,7 @@ xfs_zero_remaining_bytes(
 		XFS_BUF_UNDONE(bp);
 		XFS_BUF_UNWRITE(bp);
 		XFS_BUF_READ(bp);
-		XFS_BUF_SET_ADDR(bp, XFS_FSB_TO_DB(ip, imap.br_startblock));
+		XFS_BUF_SET_ADDR(bp, xfs_fsb_to_db(ip, imap.br_startblock));
 		xfsbdstrat(mp, bp);
 		error = xfs_iowait(bp);
 		if (error) {
@@ -3186,7 +3186,7 @@ xfs_free_file_space(
 		/*
 		 * issue the bunmapi() call to free the blocks
 		 */
-		XFS_BMAP_INIT(&free_list, &firstfsb);
+		xfs_bmap_init(&free_list, &firstfsb);
 		error = xfs_bunmapi(tp, ip, startoffset_fsb,
 				  endoffset_fsb - startoffset_fsb,
 				  0, 2, &firstfsb, &free_list, NULL, &done);