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@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_attr_remote.c | 28 ++++++++++++++++++++++++++++
fs/xfs/libxfs/xfs_attr_remote.h | 1 +
2 files changed, 29 insertions(+)
diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index 3de2eec..da40f85 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -711,3 +711,31 @@ xfs_attr_rmtval_remove(
}
return 0;
}
+
+/*
+ * Remove the value associated with an attribute by deleting the out-of-line
+ * buffer that it is stored on. Returns EAGAIN for the caller to refresh the
+ * transaction and recall the function
+ */
+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/fs/xfs/libxfs/xfs_attr_remote.h b/fs/xfs/libxfs/xfs_attr_remote.h
index eff5f95..e06299a 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.h
+++ b/fs/xfs/libxfs/xfs_attr_remote.h
@@ -14,4 +14,5 @@ int xfs_attr_rmtval_remove(struct xfs_da_args *args);
int xfs_attr_rmtval_stale(struct xfs_inode *ip, struct xfs_bmbt_irec *map,
xfs_buf_flags_t incore_flags);
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__ */
--
2.7.4
