1 files changed, 87 insertions, 17 deletions

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 4e009ad303a1..a8a0ca44f88f 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -178,6 +178,8 @@ enum {
         Opt_noacl,
         Opt_usrquota,
         Opt_grpquota,
+        Opt_coherency_buffered,
+        Opt_coherency_full,
         Opt_resv_level,
         Opt_dir_resv_level,
         Opt_err,
@@ -207,6 +209,8 @@ static const match_table_t tokens = {
         {Opt_noacl, "noacl"},
         {Opt_usrquota, "usrquota"},
         {Opt_grpquota, "grpquota"},
+        {Opt_coherency_buffered, "coherency=buffered"},
+        {Opt_coherency_full, "coherency=full"},
         {Opt_resv_level, "resv_level=%u"},
         {Opt_dir_resv_level, "dir_resv_level=%u"},
         {Opt_err, NULL}
@@ -516,11 +520,11 @@ static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
 
         mlog_entry_void();
 
-        for (i = 0; i < NUM_SYSTEM_INODES; i++) {
-                inode = osb->system_inodes[i];
+        for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
+                inode = osb->global_system_inodes[i];
                 if (inode) {
                         iput(inode);
-                        osb->system_inodes[i] = NULL;
+                        osb->global_system_inodes[i] = NULL;
                 }
         }
 
@@ -536,6 +540,20 @@ static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
                 osb->root_inode = NULL;
         }
 
+        if (!osb->local_system_inodes)
+                goto out;
+
+        for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
+                if (osb->local_system_inodes[i]) {
+                        iput(osb->local_system_inodes[i]);
+                        osb->local_system_inodes[i] = NULL;
+                }
+        }
+
+        kfree(osb->local_system_inodes);
+        osb->local_system_inodes = NULL;
+
+out:
         mlog_exit(0);
 }
 
@@ -1452,6 +1470,12 @@ static int ocfs2_parse_options(struct super_block *sb,
                 case Opt_grpquota:
                         mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
                         break;
+                case Opt_coherency_buffered:
+                        mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
+                        break;
+                case Opt_coherency_full:
+                        mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
+                        break;
                 case Opt_acl:
                         mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
                         mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
@@ -1563,6 +1587,11 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
         if (opts & OCFS2_MOUNT_GRPQUOTA)
                 seq_printf(s, ",grpquota");
 
+        if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
+                seq_printf(s, ",coherency=buffered");
+        else
+                seq_printf(s, ",coherency=full");
+
         if (opts & OCFS2_MOUNT_NOUSERXATTR)
                 seq_printf(s, ",nouser_xattr");
         else
@@ -2017,6 +2046,36 @@ static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uu
         return 0;
 }
 
+/* Make sure entire volume is addressable by our journal.  Requires
+   osb_clusters_at_boot to be valid and for the journal to have been
+   initialized by ocfs2_journal_init(). */
+static int ocfs2_journal_addressable(struct ocfs2_super *osb)
+{
+        int status = 0;
+        u64 max_block =
+                ocfs2_clusters_to_blocks(osb->sb,
+                                         osb->osb_clusters_at_boot) - 1;
+
+        /* 32-bit block number is always OK. */
+        if (max_block <= (u32)~0ULL)
+                goto out;
+
+        /* Volume is "huge", so see if our journal is new enough to
+           support it. */
+        if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
+                                       OCFS2_FEATURE_COMPAT_JBD2_SB) &&
+              jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
+                                               JBD2_FEATURE_INCOMPAT_64BIT))) {
+                mlog(ML_ERROR, "The journal cannot address the entire volume. "
+                     "Enable the 'block64' journal option with tunefs.ocfs2");
+                status = -EFBIG;
+                goto out;
+        }
+
+ out:
+        return status;
+}
+
 static int ocfs2_initialize_super(struct super_block *sb,
                                   struct buffer_head *bh,
                                   int sector_size,
@@ -2029,6 +2088,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
         struct ocfs2_journal *journal;
         __le32 uuid_net_key;
         struct ocfs2_super *osb;
+        u64 total_blocks;
 
         mlog_entry_void();
 
@@ -2087,6 +2147,15 @@ static int ocfs2_initialize_super(struct super_block *sb,
         snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
                  MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
 
+        osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
+        if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
+                mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
+                     osb->max_slots);
+                status = -EINVAL;
+                goto bail;
+        }
+        mlog(0, "max_slots for this device: %u\n", osb->max_slots);
+
         ocfs2_orphan_scan_init(osb);
 
         status = ocfs2_recovery_init(osb);
@@ -2125,15 +2194,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
                 goto bail;
         }
 
-        osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
-        if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
-                mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
-                     osb->max_slots);
-                status = -EINVAL;
-                goto bail;
-        }
-        mlog(0, "max_slots for this device: %u\n", osb->max_slots);
-
         osb->slot_recovery_generations =
                 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
                         GFP_KERNEL);
@@ -2243,11 +2303,15 @@ static int ocfs2_initialize_super(struct super_block *sb,
                 goto bail;
         }
 
-        if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1)
-            > (u32)~0UL) {
-                mlog(ML_ERROR, "Volume might try to write to blocks beyond "
-                     "what jbd can address in 32 bits.\n");
-                status = -EINVAL;
+        total_blocks = ocfs2_clusters_to_blocks(osb->sb,
+                                                le32_to_cpu(di->i_clusters));
+
+        status = generic_check_addressable(osb->sb->s_blocksize_bits,
+                                           total_blocks);
+        if (status) {
+                mlog(ML_ERROR, "Volume too large "
+                     "to mount safely on this system");
+                status = -EFBIG;
                 goto bail;
         }
 
@@ -2409,6 +2473,12 @@ static int ocfs2_check_volume(struct ocfs2_super *osb)
                 goto finally;
         }
 
+        /* Now that journal has been initialized, check to make sure
+           entire volume is addressable. */
+        status = ocfs2_journal_addressable(osb);
+        if (status)
+                goto finally;
+
         /* If the journal was unmounted cleanly then we don't want to
          * recover anything. Otherwise, journal_load will do that
          * dirty work for us :) */