tree 649d02d1880d0a51a97399c9a2b5e58c842cb53a
parent 2c4656dfd994538176db30ce09c02cc0dfc361ae
author Miklos Szeredi <mszeredi@redhat.com> 1589967575 +0200
committer Miklos Szeredi <mszeredi@redhat.com> 1589967575 +0200

fuse: copy_file_range should truncate cache

After the copy operation completes the cache is not up-to-date.  Truncate
all pages in the interval that has successfully been copied.

Truncating completely copied dirty pages is okay, since the data has been
overwritten anyway.  Truncating partially copied dirty pages is not okay;
add a comment for now.

Fixes: 88bc7d5097a1 ("fuse: add support for copy_file_range()")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>