Re: [PATCH] ext4: reject delalloc to nodelalloc before applying remount options

[Theodore Ts'o]

On Fri, 14 Aug 2026 11:48:55 +0800, guzebing wrote:
> Commit 97f5ec3b166d ("ext4: prevent delalloc to nodelalloc on
> remount") rejects switching a mounted filesystem from delalloc to
> nodelalloc.  However, it performs the check after ext4_apply_options()
> has already cleared EXT4_MOUNT_DELALLOC in the live superblock.  The
> failure path eventually restores the bit, but leaves a window where
> other CPUs can observe nodelalloc.
> 
> [...]

Applied, thanks!

[1/1] ext4: reject delalloc to nodelalloc before applying remount options
      commit: 26a3ff309c91986dbedb05d0e0f0050ea0aa629c

Best regards,
-- 
Theodore Ts'o <tytso@xxxxxxx>