diff options
| author | Fabiano Rosas <farosas@suse.de> | 2024-02-29 12:30:11 -0300 |
|---|---|---|
| committer | Peter Xu <peterx@redhat.com> | 2024-03-01 15:42:04 +0800 |
| commit | b7b03eb614d01079f9b1f7a1d342140b5055a559 (patch) | |
| tree | e4f3e7a433c0c517722e15bbdc337e0b5f2f3d3c /migration/multifd.h | |
| parent | a8a3e7102ccf65ee57fb7427952b98ebb460bec9 (diff) | |
migration/multifd: Add outgoing QIOChannelFile support
Allow multifd to open file-backed channels. This will be used when
enabling the mapped-ram migration stream format which expects a
seekable transport.
The QIOChannel read and write methods will use the preadv/pwritev
versions which don't update the file offset at each call so we can
reuse the fd without re-opening for every channel.
Contrary to the socket migration, the file migration doesn't need an
asynchronous channel creation process, so expose
multifd_channel_connect() and call it directly.
Note that this is just setup code and multifd cannot yet make use of
the file channels.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240229153017.2221-18-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
Diffstat (limited to 'migration/multifd.h')
| -rw-r--r-- | migration/multifd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/migration/multifd.h b/migration/multifd.h index 1d8bbaf96b..db8887f088 100644 --- a/migration/multifd.h +++ b/migration/multifd.h @@ -227,5 +227,6 @@ static inline void multifd_send_prepare_header(MultiFDSendParams *p) p->iovs_num++; } +void multifd_channel_connect(MultiFDSendParams *p, QIOChannel *ioc); #endif |