xfs-linux/linux-2.6/xfs_super.c - diff

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-version 1.375, 2007/01/12 15:07:09
+version 1.376, 2007/02/02 14:37:48
  Line 668  xfs_fs_sync_super(
          int                     error;
          int                     flags;
-         if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
+         if (unlikely(sb->s_frozen == SB_FREEZE_WRITE)) {
-                 flags = SYNC_QUIESCE;
+                 /*
-         else
+                  * First stage of freeze - no more writers will make progress
+                  * now we are here, so we flush delwri and delalloc buffers
+                  * here, then wait for all I/O to complete.  Data is frozen at
+                  * that point. Metadata is not frozen, transactions can still
+                  * occur here so don't bother flushing the buftarg (i.e
+                  * SYNC_QUIESCE) because it'll just get dirty again.
+                  */
+                 flags = SYNC_FSDATA | SYNC_DELWRI | SYNC_WAIT | SYNC_DIO_WAIT;
+         } else
                  flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
          error = bhv_vfs_sync(vfsp, flags, NULL);