xfs: implement pNFS export operations

[deliverable/linux.git] / fs / xfs / xfs_fsops.c

diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index fdc64220fcb0fe02f0baa8b42110df8d4acdd3b1..74efe5b760dcc2907280db8e374afe6f5914d7b3 100644 (file)
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -488,6 +488,7 @@ xfs_growfs_data_private(
                xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree);
        if (dpct)
                xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
+       xfs_trans_set_sync(tp);
        error = xfs_trans_commit(tp, 0);
        if (error)
                return error;
@@ -541,7 +542,7 @@ xfs_growfs_data_private(
                        saved_error = error;
                        continue;
                }
-               xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS);
+               xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb);
 
                error = xfs_bwrite(bp);
                xfs_buf_relse(bp);
@@ -601,6 +602,12 @@ xfs_growfs_data(
        if (!mutex_trylock(&mp->m_growlock))
                return -EWOULDBLOCK;
        error = xfs_growfs_data_private(mp, in);
+       /*
+        * Increment the generation unconditionally, the error could be from
+        * updating the secondary superblocks, in which case the new size
+        * is live already.
+        */
+       mp->m_generation++;
        mutex_unlock(&mp->m_growlock);
        return error;
 }
@@ -756,37 +763,6 @@ out:
        return 0;
 }
 
-/*
- * Dump a transaction into the log that contains no real change. This is needed
- * to be able to make the log dirty or stamp the current tail LSN into the log
- * during the covering operation.
- *
- * We cannot use an inode here for this - that will push dirty state back up
- * into the VFS and then periodic inode flushing will prevent log covering from
- * making progress. Hence we log a field in the superblock instead and use a
- * synchronous transaction to ensure the superblock is immediately unpinned
- * and can be written back.
- */
-int
-xfs_fs_log_dummy(
-       xfs_mount_t     *mp)
-{
-       xfs_trans_t     *tp;
-       int             error;
-
-       tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP);
-       error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0);
-       if (error) {
-               xfs_trans_cancel(tp, 0);
-               return error;
-       }
-
-       /* log the UUID because it is an unchanging field */
-       xfs_mod_sb(tp, XFS_SB_UUID);
-       xfs_trans_set_sync(tp);
-       return xfs_trans_commit(tp, 0);
-}
-
 int
 xfs_fs_goingdown(
        xfs_mount_t     *mp,