From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
If the administrator asks us to add a realtime volume to an existing
rmap filesystem, we must allocate and attach the rtrmapbt inode to the
system prior to enabling the rt volume.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/xfs_rtalloc.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 8a7cf57d509b..c39221d86936 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -26,6 +26,7 @@
#include "xfs_rtalloc.h"
#include "xfs_da_format.h"
#include "xfs_imeta.h"
+#include "xfs_rtrmap_btree.h"
/*
* Read and return the summary information for a given extent size,
@@ -866,6 +867,60 @@ xfs_growfs_rt_alloc(
* Visible (exported) functions.
*/
+
+/* Add a realtime rmap btree inode. */
+int
+xfs_growfs_rt_rmap(
+ struct xfs_mount *mp)
+{
+ struct xfs_imeta_end ic;
+ struct xfs_inode *ip = NULL;
+ struct xfs_trans *tp;
+ int error;
+
+ if (!xfs_sb_version_hasrmapbt(&mp->m_sb) || mp->m_rrmapip != NULL)
+ return 0;
+
+ /* rtrmapbt requires metadir */
+ if (!xfs_sb_version_hasmetadir(&mp->m_sb))
+ return -EINVAL;
+
+ /* Ensure the path to the rtrmapbt inode exists. */
+ error = xfs_imeta_ensure_dirpath(mp, &XFS_IMETA_RTRMAPBT);
+ if (error)
+ return error;
+
+ /* Create the rtrmapbt inode. */
+ error = xfs_trans_alloc(mp, &M_RES(mp)->tr_imeta_create,
+ xfs_imeta_create_space_res(mp), 0, 0, &tp);
+ if (error)
+ return error;
+
+ error = xfs_rtrmapbt_create(&tp, &ic, &ip);
+ if (error)
+ goto out_cancel;
+
+ error = xfs_trans_commit(tp);
+ xfs_finish_inode_setup(ip);
+ xfs_imeta_end_update(mp, &ic, error);
+ if (error) {
+ xfs_irele(ip);
+ return error;
+ }
+
+ mp->m_rrmapip = ip;
+ return 0;
+
+out_cancel:
+ xfs_trans_cancel(tp);
+ xfs_imeta_end_update(mp, &ic, error);
+ if (ip) {
+ xfs_finish_inode_setup(ip);
+ xfs_irele(ip);
+ }
+ return error;
+}
+
/*
* Grow the realtime area of the filesystem.
*/
@@ -946,6 +1001,10 @@ xfs_growfs_rt(
error = xfs_growfs_rt_alloc(mp, rsumblocks, nrsumblocks, mp->m_rsumip);
if (error)
return error;
+ error = xfs_growfs_rt_rmap(mp);
+ if (error)
+ return error;
+
/*
* Allocate a new (fake) mount/sb.
*/
