This is a note to let you know that I've just added the patch titled
xfs: prevent rt growfs when quota is enabled
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xfs-prevent-rt-growfs-when-quota-is-enabled.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6c15f39f53a79bf881765aba6bbba165bc2b8318
Author: Darrick J. Wong <djwong@xxxxxxxxxx>
Date: Thu Feb 8 15:20:37 2024 -0800
xfs: prevent rt growfs when quota is enabled
commit b73494fa9a304ab95b59f07845e8d7d36e4d23e0 upstream.
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,usrquota
# xfs_growfs -r /mnt
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Catherine Hoang <catherine.hoang@xxxxxxxxxx>
Acked-by: Chandan Babu R <chandanbabu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 16534e9873f6..31fd65b3aaa9 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -954,7 +954,7 @@ 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;
