This is a note to let you know that I've just added the patch titled
xfs: disable per-inode DAX flag
to the 4.13-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-disable-per-inode-dax-flag.patch
and it can be found in the queue-4.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Sep 18 10:25:08 CEST 2017
From: Christoph Hellwig <hch@xxxxxx>
Date: Sun, 17 Sep 2017 14:06:27 -0700
Subject: xfs: disable per-inode DAX flag
To: stable@xxxxxxxxxxxxxxx
Cc: linux-xfs@xxxxxxxxxxxxxxx, "Darrick J . Wong" <darrick.wong@xxxxxxxxxx>
Message-ID: <20170917210631.10725-22-hch@xxxxxx>
From: Christoph Hellwig <hch@xxxxxx>
commit 742d84290739ae908f1b61b7d17ea382c8c0073a upstream.
Currently flag switching can be used to easily crash the kernel. Disable
the per-inode DAX flag until that is sorted out.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/xfs_ioctl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1008,11 +1008,12 @@ xfs_diflags_to_linux(
inode->i_flags |= S_NOATIME;
else
inode->i_flags &= ~S_NOATIME;
+#if 0 /* disabled until the flag switching races are sorted out */
if (xflags & FS_XFLAG_DAX)
inode->i_flags |= S_DAX;
else
inode->i_flags &= ~S_DAX;
-
+#endif
}
static int
Patches currently in stable-queue which might be from hch@xxxxxx are
queue-4.13/xfs-open-code-xfs_buf_item_dirty.patch
queue-4.13/xfs-properly-retry-failed-inode-items-in-case-of-error-during-buffer-writeback.patch
queue-4.13/xfs-use-kmem_free-to-free-return-value-of-kmem_zalloc.patch
queue-4.13/xfs-add-infrastructure-needed-for-error-propagation-during-buffer-io-failure.patch
queue-4.13/xfs-don-t-set-v3-xflags-for-v2-inodes.patch
queue-4.13/xfs-toggle-readonly-state-around-xfs_log_mount_finish.patch
queue-4.13/xfs-fix-log-recovery-corruption-error-due-to-tail-overwrite.patch
queue-4.13/xfs-move-bmbt-owner-change-to-last-step-of-extent-swap.patch
queue-4.13/xfs-check-for-race-with-xfs_reclaim_inode-in-xfs_ifree_cluster.patch
queue-4.13/xfs-always-verify-the-log-tail-during-recovery.patch
queue-4.13/xfs-open-code-end_buffer_async_write-in-xfs_finish_page_writeback.patch
queue-4.13/xfs-relog-dirty-buffers-during-swapext-bmbt-owner-change.patch
queue-4.13/xfs-disable-per-inode-dax-flag.patch
queue-4.13/xfs-refactor-buffer-logging-into-buffer-dirtying-helper.patch
queue-4.13/xfs-fix-recovery-failure-when-log-record-header-wraps-log-end.patch
queue-4.13/xfs-skip-bmbt-block-ino-validation-during-owner-change.patch
queue-4.13/xfs-don-t-log-dirty-ranges-for-ordered-buffers.patch
queue-4.13/xfs-stop-searching-for-free-slots-in-an-inode-chunk-when-there-are-none.patch
queue-4.13/xfs-fix-incorrect-log_flushed-on-fsync.patch
queue-4.13/xfs-evict-all-inodes-involved-with-log-redo-item.patch
queue-4.13/xfs-write-unmount-record-for-ro-mounts.patch
queue-4.13/xfs-remove-unnecessary-dirty-bli-format-check-for-ordered-bufs.patch
queue-4.13/xfs-disallow-marking-previously-dirty-buffers-as-ordered.patch
queue-4.13/xfs-handle-efscorrupted-during-head-tail-verification.patch
queue-4.13/xfs-ordered-buffer-log-items-are-never-formatted.patch