diff mbox series

[2/3] xfs: prevent rt growfs when quota is enabled

Message ID 169704720365.1773263.12533098463437598674.stgit@frogsfrogsfrogs (mailing list archive)
State Superseded
Headers show
Series xfs: minor bugfixes for rt stuff | expand

Commit Message

Darrick J. Wong Oct. 11, 2023, 6:02 p.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Quotas aren't (yet) supported with realtime, so we shouldn't allow
userspace to set up a realtime section when quotas are enabled, even if
they attached one via mount options.  IOWS, you shouldn't be able to do:

# mkfs.xfs -f /dev/sda
# mount /dev/sda /mnt -o rtdev=/dev/sdb
# xfs_growfs -r /mnt

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/xfs_rtalloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Christoph Hellwig Oct. 12, 2023, 4:51 a.m. UTC | #1 
Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index dbc81ea0f4ff6..5429a019159a6 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -959,7 +959,7 @@  xfs_growfs_rt(
 		return -EINVAL;
 
 	/* Unsupported realtime features. */
-	if (xfs_has_rmapbt(mp) || xfs_has_reflink(mp))
+	if (xfs_has_rmapbt(mp) || xfs_has_reflink(mp) || xfs_has_quota(mp))
 		return -EOPNOTSUPP;
 
 	nrblocks = in->newblocks;