[PATCH 2/2] xfs_export_operations.commit_metadata

Ben Myers
2010-02-16T21:04:19Z

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>
---
fs/xfs/linux-2.6/xfs_export.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c
index 87b8cbd..47a8d1f 100644
--- 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 +216,32 @@ 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;
+ xfs_lsn_t force_lsn = NULLCOMMITLSN;
+ int error = 0;
+
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
+ if (xfs_ipincount(ip)) {
+ force_lsn = ip->i_itemp->ili_last_lsn;
+ }
+ if (force_lsn != NULLCOMMITLSN) {
+ error = _xfs_log_force(mp, force_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,
};