xfs_export_operations.commit_metadata

This is the commit_metadata export operation for XFS.

- Takes one inode to be committed.

- Forces the log up to the lsn of the inode.

- Doesn't force the log if the inode doesn't have a pincount.

Signed-off-by: Ben Myers <bpm@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
[bfields@citi.umich.edu: trivial whitespace fix]
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c
index 87b8cbd..8f4d707 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_export.c
+++ b/fs/xfs/linux-2.6/xfs_export.c
@@ -29,6 +29,7 @@
 #include "xfs_vnodeops.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_inode.h"
+#include "xfs_inode_item.h"
 
 /*
  * Note that we only accept fileids which are long enough rather than allow
@@ -215,9 +216,28 @@ xfs_fs_get_parent(
        return d_obtain_alias(VFS_I(cip));
 }
 
+STATIC int
+xfs_fs_nfs_commit_metadata(
+       struct inode            *inode)
+{
+       struct xfs_inode        *ip = XFS_I(inode);
+       struct xfs_mount        *mp = ip->i_mount;
+       int                     error = 0;
+
+       xfs_ilock(ip, XFS_ILOCK_SHARED);
+       if (xfs_ipincount(ip)) {
+               error = _xfs_log_force(mp, ip->i_itemp->ili_last_lsn,
+                               XFS_LOG_FORCE | XFS_LOG_SYNC, NULL);
+       }
+       xfs_iunlock(ip, XFS_ILOCK_SHARED);
+
+       return error;
+}
+
 const struct export_operations xfs_export_operations = {
        .encode_fh              = xfs_fs_encode_fh,
        .fh_to_dentry           = xfs_fs_fh_to_dentry,
        .fh_to_parent           = xfs_fs_fh_to_parent,
        .get_parent             = xfs_fs_get_parent,
+       .commit_metadata        = xfs_fs_nfs_commit_metadata,
 };