Re: [PATCH v9 0/6] Btrfs: implement swap file support

[David Sterba <dsterba@suse.cz>]

On Tue, Nov 06, 2018 at 10:54:51AM +0100, David Sterba wrote:
> On Thu, Sep 27, 2018 at 11:17:32AM -0700, Omar Sandoval wrote:
> > From: Omar Sandoval <osandov@fb.com>
> > This series implements swap file support for Btrfs.
> > 
> > Changes from v8 [1]:
> > 
> > - Fixed a bug in btrfs_swap_activate() which would cause us to miss some
> >   file extents if they were merged into one extent map entry.
> > - Fixed build for !CONFIG_SWAP.
> > - Changed all error messages to KERN_WARN.
> > - Unindented long error messages.
> > 
> > I've Cc'd Jon and Al on patch 3 this time, so hopefully we can get an
> > ack for that one, too.
> > 
> > Thanks!
> > 
> > 1: https://www.spinics.net/lists/linux-btrfs/msg82267.html
> > 
> > Omar Sandoval (6):
> >   mm: split SWP_FILE into SWP_ACTIVATED and SWP_FS
> >   mm: export add_swap_extent()
> >   vfs: update swap_{,de}activate documentation
> >   Btrfs: prevent ioctls from interfering with a swap file
> >   Btrfs: rename get_chunk_map() and make it non-static
> >   Btrfs: support swap files
> 
> fstest generic/472 reports an assertion failure. This is on the updated fstests
> git (70c4067285b0bc076), though it should not matter:
> 
> [16597.002190] assertion failed: IS_ALIGNED(start, fs_info->sectorsize) && IS_ALIGNED(end + 1, fs_info->sectorsize), file: fs/btrfs/file-item.c, line: 319

I have to revert the patch for now as it kills the testing machines.