From: Darrick J. Wong <djwong@kernel.org>
Date: Thu, 21 Nov 2024 00:20:57 +0000 (-0800)
Subject: xfs: update rmap to allow cow staging extents in the rt rmap
X-Git-Tag: v6.14-rc1~132^2~29^2~27
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0bada82331238bd366aaa0566d125c6338b42590;p=thirdparty%2Fkernel%2Flinux.git

xfs: update rmap to allow cow staging extents in the rt rmap

Don't error out on CoW staging extent records when realtime reflink is
enabled.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c
index f8415fd96cc2a..3cdf50563fecb 100644
--- a/fs/xfs/libxfs/xfs_rmap.c
+++ b/fs/xfs/libxfs/xfs_rmap.c
@@ -285,6 +285,13 @@ xfs_rtrmap_check_meta_irec(
 		if (irec->rm_blockcount != mp->m_sb.sb_rextsize)
 			return __this_address;
 		return NULL;
+	case XFS_RMAP_OWN_COW:
+		if (!xfs_has_rtreflink(mp))
+			return __this_address;
+		if (!xfs_verify_rgbext(rtg, irec->rm_startblock,
+					    irec->rm_blockcount))
+			return __this_address;
+		return NULL;
 	default:
 		return __this_address;
 	}