[Devel] [PATCH RH7 0/4] ploop: Protect fastmap against defrag and punch hole

[Vasily Averin]

do you have bug ID for this problem?

On 8/6/20 2:49 PM, Kirill Tkhai wrote:
> This protects fastmap against mapped extent disappearance,
> which may be a result of extenal actions (move extent and
> punch hole) on root.hds. Thus, root.hds becomes more "normal"
> file.
> 
> ---
> 
> Kirill Tkhai (4):
>       ploop: Introduce ->fastmap_end_io
>       ploop: Add @write argument to ->fastmap
>       fs: Export mapping_needs_writeback()
>       ploop: io_kaio: Protect ->fastmap against EXT4_IOC_MOVE_EXT and punch hole
> 
> 
>  drivers/block/ploop/dev.c     |   25 ++++++++++++++++++++++--
>  drivers/block/ploop/io_kaio.c |   22 ++++++++++++++++++---
>  fs/ext4/file.c                |   43 ++++++++++++++++++++++++++++++++++++++---
>  include/linux/fs.h            |    2 +-
>  include/linux/pagemap.h       |    7 +++++++
>  include/linux/ploop/ploop.h   |    8 ++++++++
>  mm/filemap.c                  |    6 ------
>  7 files changed, 98 insertions(+), 15 deletions(-)
> 
> --
> Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
>