[v6,14/17] xfsprogs: Add helper function xfs_attr_rmtval_unmap
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Message ID 20200118224558.19382-15-allison.henderson@oracle.com
State New
Headers show
Series
  • xfsprogs: Delayed Ready Attributes
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Commit Message

Allison Collins Jan. 18, 2020, 10:45 p.m. UTC
This function is similar to xfs_attr_rmtval_remove, but adapted to
return. EAGAIN for new transactions. We will use this later when we
introduce delayed attributes

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr_remote.c | 27 +++++++++++++++++++++++++++
 libxfs/xfs_attr_remote.h |  1 +
 2 files changed, 28 insertions(+)

Patch
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diff --git a/libxfs/xfs_attr_remote.c b/libxfs/xfs_attr_remote.c
index cfeca71..a209b00 100644
--- a/libxfs/xfs_attr_remote.c
+++ b/libxfs/xfs_attr_remote.c
@@ -681,3 +681,30 @@  xfs_attr_rmtval_remove(
 	}
 	return 0;
 }
+
+/*
+ * Unmap value blocks for this attr.  This is similar to
+ * xfs_attr_rmtval_remove, but adapted to to return EAGAIN for new transactions
+ */
+int
+xfs_attr_rmtval_unmap(
+	struct xfs_da_args	*args)
+{
+	int	error, done;
+
+	/*
+	 * Unmap value blocks for this attr.  This is similar to
+	 * xfs_attr_rmtval_remove, but open coded here to return EAGAIN
+	 * for new transactions
+	 */
+	error = xfs_bunmapi(args->trans, args->dp,
+		    args->rmtblkno, args->rmtblkcnt,
+		    XFS_BMAPI_ATTRFORK, 1, &done);
+	if (error)
+		return error;
+
+	if (!done)
+		return -EAGAIN;
+
+	return 0;
+}
diff --git a/libxfs/xfs_attr_remote.h b/libxfs/xfs_attr_remote.h
index 85f2593..7ab3770 100644
--- a/libxfs/xfs_attr_remote.h
+++ b/libxfs/xfs_attr_remote.h
@@ -12,4 +12,5 @@  int xfs_attr_rmtval_get(struct xfs_da_args *args);
 int xfs_attr_rmtval_set(struct xfs_da_args *args);
 int xfs_attr_rmtval_remove(struct xfs_da_args *args);
 int xfs_attr_rmtval_invalidate(struct xfs_da_args *args);
+int xfs_attr_rmtval_unmap(struct xfs_da_args *args);
 #endif /* __XFS_ATTR_REMOTE_H__ */