On Fri, Jun 30, 2017 at 7:37 PM, Christoph Hellwig <hch@xxxxxx> wrote:
> On Fri, Jun 30, 2017 at 01:51:10PM +0200, Andreas Gruenbacher wrote:
>> Also, ext4 no longer calls inode_lock or inode_lock_shared; that needs
>> to be added back for consistency between reading i_size and walking
>> the file extents.
>
> At least for XFS we never had such a consistency as we never took
> the iolock (aka i_rwsem).
What else does this piece of code from mainline xfs_seek_hole_data()
do instead then?
lock = xfs_ilock_data_map_shared(ip);
end = i_size_read(inode);
offset = __xfs_seek_hole_data(inode, start, end, whence);
Thanks,
Andreas
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