On Wed, 22 Jan 2025 06:43:21 +0100, Christoph Hellwig wrote:
> The XFS_IOC_EXCHANGE_RANGE ioctl with the XFS_EXCHANGE_RANGE_TO_EOF flag
> operates on a range bounded by the end of the file. This means the
> actual amount of blocks exchanged is derived from the inode size, which
> is only stable with the IOLOCK (i_rwsem) held. Do that, it currently
> calls remap_verify_area from inside the sb write protection which nests
> outside the IOLOCK. But this makes fsnotify_file_area_perm which is
> called from remap_verify_area unhappy when the kernel is built with
> lockdep and the recently added CONFIG_FANOTIFY_ACCESS_PERMISSIONS
> option.
>
> [...]
Applied to for-next, thanks!
[1/1] xfs: don't call remap_verify_area with sb write protection held
commit: f5f0ed89f13e3e5246404a322ee85169a226bfb5
Best regards,
--
Carlos Maiolino <cem@xxxxxxxxxx>
