From: Christoph Hellwig <hch@lst.de>
Date: Sun, 28 Jul 2024 13:50:24 +0000 (-0700)
Subject: xfs: check for incompatible features
X-Git-Tag: xfs-zoned-2024-08-22
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=75437bcbb5cd8c5bcf8719fcc587c6e4dc016df2;p=users%2Fhch%2Fxfs.git

xfs: check for incompatible features

We don't currenty support the rtsb or reflink features with zoned
devices.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index de2365069b2d..4c97bb56443a 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1780,9 +1780,16 @@ xfs_fs_fill_super(
 		xfs_warn(mp,
 "EXPERIMENTAL realtime allocation group feature in use. Use at your own risk!");
 
-	if (xfs_has_rtsb(mp))
+	if (xfs_has_rtsb(mp)) {
+		if (xfs_has_zoned(mp)) {
+			xfs_alert(mp,
+	"realtime superblock feature not supported on zoned devices.");
+			error = -EINVAL;
+			goto out_filestream_unmount;
+		}
 		xfs_warn(mp,
 "EXPERIMENTAL realtime superblock feature in use. Use at your own risk!");
+	}
 
 	if (xfs_has_reflink(mp)) {
 		/*
@@ -1798,6 +1805,13 @@ xfs_fs_fill_super(
 			goto out_filestream_unmount;
 		}
 
+		if (xfs_has_zoned(mp)) {
+			xfs_alert(mp,
+	"reflink not compatible with zoned RT device!");
+			error = -EINVAL;
+			goto out_filestream_unmount;
+		}
+
 		/*
 		 * always-cow mode is not supported on filesystems with rt
 		 * extent sizes larger than a single block because we'd have