Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2/trivial: Use le16_to_cpu for a disk value in xattr.c
  ocfs2/trivial: Use proper mask for 2 places in hearbeat.c
  Ocfs2: Let ocfs2 support fiemap for symlink and fast symlink.
  Ocfs2: Should ocfs2 support fiemap for S_IFDIR inode?
  ocfs2: Use FIEMAP_EXTENT_SHARED
  fiemap: Add new extent flag FIEMAP_EXTENT_SHARED
  ocfs2: replace u8 by __u8 in ocfs2_fs.h
  ocfs2: explicit declare uninitialized var in user_cluster_connect()
  ocfs2-devel: remove redundant OCFS2_MOUNT_POSIX_ACL check in ocfs2_get_acl_nolock()
  ocfs2: return -EAGAIN instead of EAGAIN in dlm
  ocfs2/cluster: Make fence method configurable - v2
  ocfs2: Set MS_POSIXACL on remount
  ocfs2: Make acl use the default
  ocfs2: Always include ACL support

19 files changed, 170 insertions, 116 deletions

diff --git a/fs/ocfs2/Kconfig b/fs/ocfs2/Kconfig
index 701b7a3a872..0d840669698 100644
--- a/fs/ocfs2/Kconfig
+++ b/fs/ocfs2/Kconfig
@@ -6,6 +6,7 @@ config OCFS2_FS
 	select CRC32
 	select QUOTA
 	select QUOTA_TREE
+	select FS_POSIX_ACL
 	help
 	  OCFS2 is a general purpose extent based shared disk cluster file
 	  system with many similarities to ext3. It supports 64 bit inode
@@ -74,12 +75,3 @@ config OCFS2_DEBUG_FS
 	  This option will enable expensive consistency checks. Enable
 	  this option for debugging only as it is likely to decrease
 	  performance of the filesystem.
-
-config OCFS2_FS_POSIX_ACL
-	bool "OCFS2 POSIX Access Control Lists"
-	depends on OCFS2_FS
-	select FS_POSIX_ACL
-	default n
-	help
-	  Posix Access Control Lists (ACLs) support permissions for users and
-	  groups beyond the owner/group/world scheme.
diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile
index 31f25ce32c9..600d2d2ade1 100644
--- a/fs/ocfs2/Makefile
+++ b/fs/ocfs2/Makefile
@@ -39,11 +39,8 @@ ocfs2-objs := \
 	ver.o			\
 	quota_local.o		\
 	quota_global.o		\
-	xattr.o
-
-ifeq ($(CONFIG_OCFS2_FS_POSIX_ACL),y)
-ocfs2-objs += acl.o
-endif
+	xattr.o			\
+	acl.o
 
 ocfs2_stackglue-objs := stackglue.o
 ocfs2_stack_o2cb-objs := stack_o2cb.o
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
index e3e47415d85..0501974bedd 100644
--- a/fs/ocfs2/acl.c
+++ b/fs/ocfs2/acl.c
@@ -98,15 +98,11 @@ static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode,
 					      int type,
 					      struct buffer_head *di_bh)
 {
-	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 	int name_index;
 	char *value = NULL;
 	struct posix_acl *acl;
 	int retval;
 
-	if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
-		return NULL;
-
 	switch (type) {
 	case ACL_TYPE_ACCESS:
 		name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;
diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h
index 8f6389ed4da..5c5d31f0585 100644
--- a/fs/ocfs2/acl.h
+++ b/fs/ocfs2/acl.h
@@ -26,8 +26,6 @@ struct ocfs2_acl_entry {
 	__le32 e_id;
 };
 
-#ifdef CONFIG_OCFS2_FS_POSIX_ACL
-
 extern int ocfs2_check_acl(struct inode *, int);
 extern int ocfs2_acl_chmod(struct inode *);
 extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *,
@@ -35,24 +33,4 @@ extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *,
 			  struct ocfs2_alloc_context *,
 			  struct ocfs2_alloc_context *);
 
-#else /* CONFIG_OCFS2_FS_POSIX_ACL*/
-
-#define ocfs2_check_acl NULL
-static inline int ocfs2_acl_chmod(struct inode *inode)
-{
-	return 0;
-}
-static inline int ocfs2_init_acl(handle_t *handle,
-				 struct inode *inode,
-				 struct inode *dir,
-				 struct buffer_head *di_bh,
-				 struct buffer_head *dir_bh,
-				 struct ocfs2_alloc_context *meta_ac,
-				 struct ocfs2_alloc_context *data_ac)
-{
-	return 0;
-}
-
-#endif /* CONFIG_OCFS2_FS_POSIX_ACL*/
-
 #endif /* OCFS2_ACL_H */
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index c452d116b89..eda5b8bcddd 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -176,7 +176,8 @@ static void o2hb_write_timeout(struct work_struct *work)
 
 static void o2hb_arm_write_timeout(struct o2hb_region *reg)
 {
-	mlog(0, "Queue write timeout for %u ms\n", O2HB_MAX_WRITE_TIMEOUT_MS);
+	mlog(ML_HEARTBEAT, "Queue write timeout for %u ms\n",
+	     O2HB_MAX_WRITE_TIMEOUT_MS);
 
 	cancel_delayed_work(&reg->hr_write_timeout_work);
 	reg->hr_last_timeout_start = jiffies;
@@ -874,7 +875,8 @@ static int o2hb_thread(void *data)
 		do_gettimeofday(&after_hb);
 		elapsed_msec = o2hb_elapsed_msecs(&before_hb, &after_hb);
 
-		mlog(0, "start = %lu.%lu, end = %lu.%lu, msec = %u\n",
+		mlog(ML_HEARTBEAT,
+		     "start = %lu.%lu, end = %lu.%lu, msec = %u\n",
 		     before_hb.tv_sec, (unsigned long) before_hb.tv_usec,
 		     after_hb.tv_sec, (unsigned long) after_hb.tv_usec,
 		     elapsed_msec);
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
index 7ee6188bc79..c81142e3ef8 100644
--- a/fs/ocfs2/cluster/nodemanager.c
+++ b/fs/ocfs2/cluster/nodemanager.c
@@ -35,6 +35,10 @@
  * cluster references throughout where nodes are looked up */
 struct o2nm_cluster *o2nm_single_cluster = NULL;
 
+char *o2nm_fence_method_desc[O2NM_FENCE_METHODS] = {
+		"reset",	/* O2NM_FENCE_RESET */
+		"panic",	/* O2NM_FENCE_PANIC */
+};
 
 struct o2nm_node *o2nm_get_node_by_num(u8 node_num)
 {
@@ -579,6 +583,43 @@ static ssize_t o2nm_cluster_attr_reconnect_delay_ms_write(
 	return o2nm_cluster_attr_write(page, count,
 	                               &cluster->cl_reconnect_delay_ms);
 }
+
+static ssize_t o2nm_cluster_attr_fence_method_read(
+	struct o2nm_cluster *cluster, char *page)
+{
+	ssize_t ret = 0;
+
+	if (cluster)
+		ret = sprintf(page, "%s\n",
+			      o2nm_fence_method_desc[cluster->cl_fence_method]);
+	return ret;
+}
+
+static ssize_t o2nm_cluster_attr_fence_method_write(
+	struct o2nm_cluster *cluster, const char *page, size_t count)
+{
+	unsigned int i;
+
+	if (page[count - 1] != '\n')
+		goto bail;
+
+	for (i = 0; i < O2NM_FENCE_METHODS; ++i) {
+		if (count != strlen(o2nm_fence_method_desc[i]) + 1)
+			continue;
+		if (strncasecmp(page, o2nm_fence_method_desc[i], count - 1))
+			continue;
+		if (cluster->cl_fence_method != i) {
+			printk(KERN_INFO "ocfs2: Changing fence method to %s\n",
+			       o2nm_fence_method_desc[i]);
+			cluster->cl_fence_method = i;
+		}
+		return count;
+	}
+
+bail:
+	return -EINVAL;
+}
+
 static struct o2nm_cluster_attribute o2nm_cluster_attr_idle_timeout_ms = {
 	.attr	= { .ca_owner = THIS_MODULE,
 		    .ca_name = "idle_timeout_ms",
@@ -603,10 +644,19 @@ static struct o2nm_cluster_attribute o2nm_cluster_attr_reconnect_delay_ms = {
 	.store	= o2nm_cluster_attr_reconnect_delay_ms_write,
 };
 
+static struct o2nm_cluster_attribute o2nm_cluster_attr_fence_method = {
+	.attr	= { .ca_owner = THIS_MODULE,
+		    .ca_name = "fence_method",
+		    .ca_mode = S_IRUGO | S_IWUSR },
+	.show	= o2nm_cluster_attr_fence_method_read,
+	.store	= o2nm_cluster_attr_fence_method_write,
+};
+
 static struct configfs_attribute *o2nm_cluster_attrs[] = {
 	&o2nm_cluster_attr_idle_timeout_ms.attr,
 	&o2nm_cluster_attr_keepalive_delay_ms.attr,
 	&o2nm_cluster_attr_reconnect_delay_ms.attr,
+	&o2nm_cluster_attr_fence_method.attr,
 	NULL,
 };
 static ssize_t o2nm_cluster_show(struct config_item *item,
@@ -778,6 +828,7 @@ static struct config_group *o2nm_cluster_group_make_group(struct config_group *g
 	cluster->cl_reconnect_delay_ms = O2NET_RECONNECT_DELAY_MS_DEFAULT;
 	cluster->cl_idle_timeout_ms    = O2NET_IDLE_TIMEOUT_MS_DEFAULT;
 	cluster->cl_keepalive_delay_ms = O2NET_KEEPALIVE_DELAY_MS_DEFAULT;
+	cluster->cl_fence_method       = O2NM_FENCE_RESET;
 
 	ret = &cluster->cl_group;
 	o2nm_single_cluster = cluster;
diff --git a/fs/ocfs2/cluster/nodemanager.h b/fs/ocfs2/cluster/nodemanager.h
index c992ea0da4a..09ea2d388bb 100644
--- a/fs/ocfs2/cluster/nodemanager.h
+++ b/fs/ocfs2/cluster/nodemanager.h
@@ -33,6 +33,12 @@
 #include <linux/configfs.h>
 #include <linux/rbtree.h>
 
+enum o2nm_fence_method {
+	O2NM_FENCE_RESET	= 0,
+	O2NM_FENCE_PANIC,
+	O2NM_FENCE_METHODS,	/* Number of fence methods */
+};
+
 struct o2nm_node {
 	spinlock_t		nd_lock;
 	struct config_item	nd_item;
@@ -58,6 +64,7 @@ struct o2nm_cluster {
 	unsigned int		cl_idle_timeout_ms;
 	unsigned int		cl_keepalive_delay_ms;
 	unsigned int		cl_reconnect_delay_ms;
+	enum o2nm_fence_method	cl_fence_method;
 
 	/* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */
 	unsigned long	cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
diff --git a/fs/ocfs2/cluster/quorum.c b/fs/ocfs2/cluster/quorum.c
index bbacf7da48a..639024033fc 100644
--- a/fs/ocfs2/cluster/quorum.c
+++ b/fs/ocfs2/cluster/quorum.c
@@ -74,8 +74,20 @@ static void o2quo_fence_self(void)
 	 * threads can still schedule, etc, etc */
 	o2hb_stop_all_regions();
 
-	printk("ocfs2 is very sorry to be fencing this system by restarting\n");
-	emergency_restart();
+	switch (o2nm_single_cluster->cl_fence_method) {
+	case O2NM_FENCE_PANIC:
+		panic("*** ocfs2 is very sorry to be fencing this system by "
+		      "panicing ***\n");
+		break;
+	default:
+		WARN_ON(o2nm_single_cluster->cl_fence_method >=
+			O2NM_FENCE_METHODS);
+	case O2NM_FENCE_RESET:
+		printk(KERN_ERR "*** ocfs2 is very sorry to be fencing this "
+		       "system by restarting ***\n");
+		emergency_restart();
+		break;
+	};
 }
 
 /* Indicate that a timeout occured on a hearbeat region write. The
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index d9fa3d22e17..2f9e4e19a4f 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -2589,6 +2589,14 @@ retry:
 			     "begin reco msg (%d)\n", dlm->name, nodenum, ret);
 			ret = 0;
 		}
+		if (ret == -EAGAIN) {
+			mlog(0, "%s: trying to start recovery of node "
+			     "%u, but node %u is waiting for last recovery "
+			     "to complete, backoff for a bit\n", dlm->name,
+			     dead_node, nodenum);
+			msleep(100);
+			goto retry;
+		}
 		if (ret < 0) {
 			struct dlm_lock_resource *res;
 			/* this is now a serious problem, possibly ENOMEM 
@@ -2608,14 +2616,6 @@ retry:
 			 * another ENOMEM */
 			msleep(100);
 			goto retry;
-		} else if (ret == EAGAIN) {
-			mlog(0, "%s: trying to start recovery of node "
-			     "%u, but node %u is waiting for last recovery "
-			     "to complete, backoff for a bit\n", dlm->name,
-			     dead_node, nodenum);
-			/* TODO Look into replacing msleep with cond_resched() */
-			msleep(100);
-			goto retry;
 		}
 	}
 
@@ -2639,7 +2639,7 @@ int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data,
 		     dlm->name, br->node_idx, br->dead_node,
 		     dlm->reco.dead_node, dlm->reco.new_master);
 		spin_unlock(&dlm->spinlock);
-		return EAGAIN;
+		return -EAGAIN;
 	}
 	spin_unlock(&dlm->spinlock);
 
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 843db64e9d4..d35a27f4523 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -37,6 +37,7 @@
 #include "extent_map.h"
 #include "inode.h"
 #include "super.h"
+#include "symlink.h"
 
 #include "buffer_head_io.h"
 
@@ -703,6 +704,12 @@ out:
 	return ret;
 }
 
+/*
+ * The ocfs2_fiemap_inline() may be a little bit misleading, since
+ * it not only handles the fiemap for inlined files, but also deals
+ * with the fast symlink, cause they have no difference for extent
+ * mapping per se.
+ */
 static int ocfs2_fiemap_inline(struct inode *inode, struct buffer_head *di_bh,
 			       struct fiemap_extent_info *fieinfo,
 			       u64 map_start)
@@ -715,11 +722,18 @@ static int ocfs2_fiemap_inline(struct inode *inode, struct buffer_head *di_bh,
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 
 	di = (struct ocfs2_dinode *)di_bh->b_data;
-	id_count = le16_to_cpu(di->id2.i_data.id_count);
+	if (ocfs2_inode_is_fast_symlink(inode))
+		id_count = ocfs2_fast_symlink_chars(inode->i_sb);
+	else
+		id_count = le16_to_cpu(di->id2.i_data.id_count);
 
 	if (map_start < id_count) {
 		phys = oi->ip_blkno << inode->i_sb->s_blocksize_bits;
-		phys += offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+		if (ocfs2_inode_is_fast_symlink(inode))
+			phys += offsetof(struct ocfs2_dinode, id2.i_symlink);
+		else
+			phys += offsetof(struct ocfs2_dinode,
+					 id2.i_data.id_data);
 
 		ret = fiemap_fill_next_extent(fieinfo, 0, phys, id_count,
 					      flags);
@@ -756,9 +770,10 @@ int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 	down_read(&OCFS2_I(inode)->ip_alloc_sem);
 
 	/*
-	 * Handle inline-data separately.
+	 * Handle inline-data and fast symlink separately.
 	 */
-	if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+	if ((OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) ||
+	    ocfs2_inode_is_fast_symlink(inode)) {
 		ret = ocfs2_fiemap_inline(inode, di_bh, fieinfo, map_start);
 		goto out_unlock;
 	}
@@ -786,6 +801,8 @@ int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		fe_flags = 0;
 		if (rec.e_flags & OCFS2_EXT_UNWRITTEN)
 			fe_flags |= FIEMAP_EXTENT_UNWRITTEN;
+		if (rec.e_flags & OCFS2_EXT_REFCOUNTED)
+			fe_flags |= FIEMAP_EXTENT_SHARED;
 		if (is_last)
 			fe_flags |= FIEMAP_EXTENT_LAST;
 		len_bytes = (u64)le16_to_cpu(rec.e_leaf_clusters) << osb->s_clustersize_bits;
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 3e9b46002f2..50fb26a6a5f 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -2329,4 +2329,5 @@ const struct inode_operations ocfs2_dir_iops = {
 	.getxattr	= generic_getxattr,
 	.listxattr	= ocfs2_listxattr,
 	.removexattr	= generic_removexattr,
+	.fiemap         = ocfs2_fiemap,
 };
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index d963d863870..9362eea7424 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -245,9 +245,11 @@ enum ocfs2_mount_options
 	OCFS2_MOUNT_LOCALFLOCKS = 1 << 5, /* No cluster aware user file locks */
 	OCFS2_MOUNT_NOUSERXATTR = 1 << 6, /* No user xattr */
 	OCFS2_MOUNT_INODE64 = 1 << 7,	/* Allow inode numbers > 2^32 */
-	OCFS2_MOUNT_POSIX_ACL = 1 << 8,	/* POSIX access control lists */
-	OCFS2_MOUNT_USRQUOTA = 1 << 9, /* We support user quotas */
-	OCFS2_MOUNT_GRPQUOTA = 1 << 10, /* We support group quotas */
+	OCFS2_MOUNT_POSIX_ACL = 1 << 8,	/* Force POSIX access control lists */
+	OCFS2_MOUNT_NO_POSIX_ACL = 1 << 9,	/* Disable POSIX access
+						   control lists */
+	OCFS2_MOUNT_USRQUOTA = 1 << 10, /* We support user quotas */
+	OCFS2_MOUNT_GRPQUOTA = 1 << 11, /* We support group quotas */
 };
 
 #define OCFS2_OSB_SOFT_RO			0x0001
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index e9431e4a5e7..1a1a679e51b 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -1202,7 +1202,7 @@ struct ocfs2_local_disk_dqinfo {
 /* Header of one chunk of a quota file */
 struct ocfs2_local_disk_chunk {
 	__le32 dqc_free;	/* Number of free entries in the bitmap */
-	u8 dqc_bitmap[0];	/* Bitmap of entries in the corresponding
+	__u8 dqc_bitmap[0];	/* Bitmap of entries in the corresponding
 				 * chunk of quota file */
 };
 
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index ff4c798a563..da78a2a334f 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -814,7 +814,7 @@ static int fs_protocol_compare(struct ocfs2_protocol_version *existing,
 static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
 {
 	dlm_lockspace_t *fsdlm;
-	struct ocfs2_live_connection *control;
+	struct ocfs2_live_connection *uninitialized_var(control);
 	int rc = 0;
 
 	BUG_ON(conn == NULL);
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 14f47d2bfe0..26069917a9f 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -100,6 +100,8 @@ struct mount_options
 static int ocfs2_parse_options(struct super_block *sb, char *options,
 			       struct mount_options *mopt,
 			       int is_remount);
+static int ocfs2_check_set_options(struct super_block *sb,
+				   struct mount_options *options);
 static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt);
 static void ocfs2_put_super(struct super_block *sb);
 static int ocfs2_mount_volume(struct super_block *sb);
@@ -600,7 +602,8 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
 
 	lock_kernel();
 
-	if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) {
+	if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
+	    !ocfs2_check_set_options(sb, &parsed_options)) {
 		ret = -EINVAL;
 		goto out;
 	}
@@ -691,8 +694,6 @@ unlock_osb:
 	if (!ret) {
 		/* Only save off the new mount options in case of a successful
 		 * remount. */
-		if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))
-			parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
 		osb->s_mount_opt = parsed_options.mount_opt;
 		osb->s_atime_quantum = parsed_options.atime_quantum;
 		osb->preferred_slot = parsed_options.slot;
@@ -701,6 +702,10 @@ unlock_osb:
 
 		if (!ocfs2_is_hard_readonly(osb))
 			ocfs2_set_journal_params(osb);
+
+		sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+			((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
+							MS_POSIXACL : 0);
 	}
 out:
 	unlock_kernel();
@@ -1011,31 +1016,16 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
 	brelse(bh);
 	bh = NULL;
 
-	if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))
-		parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
-
+	if (!ocfs2_check_set_options(sb, &parsed_options)) {
+		status = -EINVAL;
+		goto read_super_error;
+	}
 	osb->s_mount_opt = parsed_options.mount_opt;
 	osb->s_atime_quantum = parsed_options.atime_quantum;
 	osb->preferred_slot = parsed_options.slot;
 	osb->osb_commit_interval = parsed_options.commit_interval;
 	osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt);
 	osb->local_alloc_bits = osb->local_alloc_default_bits;
-	if (osb->s_mount_opt & OCFS2_MOUNT_USRQUOTA &&
-	    !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
-					 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
-		status = -EINVAL;
-		mlog(ML_ERROR, "User quotas were requested, but this "
-		     "filesystem does not have the feature enabled.\n");
-		goto read_super_error;
-	}
-	if (osb->s_mount_opt & OCFS2_MOUNT_GRPQUOTA &&
-	    !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
-					 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
-		status = -EINVAL;
-		mlog(ML_ERROR, "Group quotas were requested, but this "
-		     "filesystem does not have the feature enabled.\n");
-		goto read_super_error;
-	}
 
 	status = ocfs2_verify_userspace_stack(osb, &parsed_options);
 	if (status)
@@ -1245,6 +1235,40 @@ static struct file_system_type ocfs2_fs_type = {
 	.next           = NULL
 };
 
+static int ocfs2_check_set_options(struct super_block *sb,
+				   struct mount_options *options)
+{
+	if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
+	    !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+					 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
+		mlog(ML_ERROR, "User quotas were requested, but this "
+		     "filesystem does not have the feature enabled.\n");
+		return 0;
+	}
+	if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
+	    !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+					 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
+		mlog(ML_ERROR, "Group quotas were requested, but this "
+		     "filesystem does not have the feature enabled.\n");
+		return 0;
+	}
+	if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
+	    !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
+		mlog(ML_ERROR, "ACL support requested but extended attributes "
+		     "feature is not enabled\n");
+		return 0;
+	}
+	/* No ACL setting specified? Use XATTR feature... */
+	if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
+				    OCFS2_MOUNT_NO_POSIX_ACL))) {
+		if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
+			options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
+		else
+			options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
+	}
+	return 1;
+}
+
 static int ocfs2_parse_options(struct super_block *sb,
 			       char *options,
 			       struct mount_options *mopt,
@@ -1392,40 +1416,19 @@ static int ocfs2_parse_options(struct super_block *sb,
 			mopt->mount_opt |= OCFS2_MOUNT_INODE64;
 			break;
 		case Opt_usrquota:
-			/* We check only on remount, otherwise features
-			 * aren't yet initialized. */
-			if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
-			    OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
-				mlog(ML_ERROR, "User quota requested but "
-				     "filesystem feature is not set\n");
-				status = 0;
-				goto bail;
-			}
 			mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
 			break;
 		case Opt_grpquota:
-			if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
-			    OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
-				mlog(ML_ERROR, "Group quota requested but "
-				     "filesystem feature is not set\n");
-				status = 0;
-				goto bail;
-			}
 			mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
 			break;
-#ifdef CONFIG_OCFS2_FS_POSIX_ACL
 		case Opt_acl:
 			mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
+			mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
 			break;
 		case Opt_noacl:
+			mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
 			mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
 			break;
-#else
-		case Opt_acl:
-		case Opt_noacl:
-			printk(KERN_INFO "ocfs2 (no)acl options not supported\n");
-			break;
-#endif
 		default:
 			mlog(ML_ERROR,
 			     "Unrecognized mount option \"%s\" "
@@ -1502,12 +1505,10 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
 	if (opts & OCFS2_MOUNT_INODE64)
 		seq_printf(s, ",inode64");
 
-#ifdef CONFIG_OCFS2_FS_POSIX_ACL
 	if (opts & OCFS2_MOUNT_POSIX_ACL)
 		seq_printf(s, ",acl");
 	else
 		seq_printf(s, ",noacl");
-#endif
 
 	return 0;
 }
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index e3421030a69..49b133ccbf1 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -163,6 +163,7 @@ const struct inode_operations ocfs2_symlink_inode_operations = {
 	.getxattr	= generic_getxattr,
 	.listxattr	= ocfs2_listxattr,
 	.removexattr	= generic_removexattr,
+	.fiemap		= ocfs2_fiemap,
 };
 const struct inode_operations ocfs2_fast_symlink_inode_operations = {
 	.readlink	= ocfs2_readlink,
@@ -174,4 +175,5 @@ const struct inode_operations ocfs2_fast_symlink_inode_operations = {
 	.getxattr	= generic_getxattr,
 	.listxattr	= ocfs2_listxattr,
 	.removexattr	= generic_removexattr,
+	.fiemap		= ocfs2_fiemap,
 };
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 43c114831c0..8fc6fb071c6 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -98,10 +98,8 @@ static struct ocfs2_xattr_def_value_root def_xv = {
 
 struct xattr_handler *ocfs2_xattr_handlers[] = {
 	&ocfs2_xattr_user_handler,
-#ifdef CONFIG_OCFS2_FS_POSIX_ACL
 	&ocfs2_xattr_acl_access_handler,
 	&ocfs2_xattr_acl_default_handler,
-#endif
 	&ocfs2_xattr_trusted_handler,
 	&ocfs2_xattr_security_handler,
 	NULL
@@ -109,12 +107,10 @@ struct xattr_handler *ocfs2_xattr_handlers[] = {
 
 static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
 	[OCFS2_XATTR_INDEX_USER]	= &ocfs2_xattr_user_handler,
-#ifdef CONFIG_OCFS2_FS_POSIX_ACL
 	[OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS]
 					= &ocfs2_xattr_acl_access_handler,
 	[OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT]
 					= &ocfs2_xattr_acl_default_handler,
-#endif
 	[OCFS2_XATTR_INDEX_TRUSTED]	= &ocfs2_xattr_trusted_handler,
 	[OCFS2_XATTR_INDEX_SECURITY]	= &ocfs2_xattr_security_handler,
 };
@@ -6064,7 +6060,7 @@ static int ocfs2_value_metas_in_xattr_header(struct super_block *sb,
 		 * to the extent block, so just calculate a maximum record num.
 		 */
 		if (!xv->xr_list.l_tree_depth)
-			*num_recs += xv->xr_list.l_next_free_rec;
+			*num_recs += le16_to_cpu(xv->xr_list.l_next_free_rec);
 		else
 			*num_recs += ocfs2_clusters_for_bytes(sb,
 							      XATTR_SIZE_MAX);
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index 08e36389f56..abd72a47f52 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -40,10 +40,8 @@ struct ocfs2_security_xattr_info {
 extern struct xattr_handler ocfs2_xattr_user_handler;
 extern struct xattr_handler ocfs2_xattr_trusted_handler;
 extern struct xattr_handler ocfs2_xattr_security_handler;
-#ifdef CONFIG_OCFS2_FS_POSIX_ACL
 extern struct xattr_handler ocfs2_xattr_acl_access_handler;
 extern struct xattr_handler ocfs2_xattr_acl_default_handler;
-#endif
 extern struct xattr_handler *ocfs2_xattr_handlers[];
 
 ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
diff --git a/include/linux/fiemap.h b/include/linux/fiemap.h
index 934e22d6580..d830747f5c0 100644
--- a/include/linux/fiemap.h
+++ b/include/linux/fiemap.h
@@ -62,5 +62,7 @@ struct fiemap {
 #define FIEMAP_EXTENT_MERGED		0x00001000 /* File does not natively
 						    * support extents. Result
 						    * merged for efficiency. */
+#define FIEMAP_EXTENT_SHARED		0x00002000 /* Space shared with other
+						    * files. */
 
 #endif /* _LINUX_FIEMAP_H */