From a192de265b26c525672884630d5376c405e83b2a Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Sun, 10 Dec 2017 18:03:56 -0800
Subject: [PATCH] xfs: allow CoW remap transactions to use reserve blocks
Git-commit: a192de265b26c525672884630d5376c405e83b2a
Patch-mainline: v4.15-rc5
References: bsc#1090535
Since we as yet have no way of holding on to the indlen blocks that are
reserved as part of CoW fork delalloc reservations, let the CoW remap
transaction dip into the reserves so that we avoid failing writes.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
---
fs/xfs/xfs_reflink.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 6931b0c79cac..e49e6db415f7 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -729,7 +729,7 @@ xfs_reflink_end_cow(
(unsigned int)(end_fsb - offset_fsb),
XFS_DATA_FORK);
error = xfs_trans_alloc(ip->i_mount, &M_RES(ip->i_mount)->tr_write,
- resblks, 0, 0, &tp);
+ resblks, 0, XFS_TRANS_RESERVE, &tp);
if (error)
goto out;
--
2.16.3