diff options
| author | Max Reitz <mreitz@redhat.com> | 2019-09-18 11:51:40 +0200 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2019-10-28 12:00:07 +0100 |
| commit | c80d8b06cfa59f5d8229379c85dcb2c3bb9c881b (patch) | |
| tree | 0e30acba1187e0e5ccfaaf6324dc46431b6691af /block/iscsi.c | |
| parent | 26536c7fc25917d1bd13781f81fe3ab039643bff (diff) | |
block: Add @exact parameter to bdrv_co_truncate()
We have two drivers (iscsi and file-posix) that (in some cases) return
success from their .bdrv_co_truncate() implementation if the block
device is larger than the requested offset, but cannot be shrunk. Some
callers do not want that behavior, so this patch adds a new parameter
that they can use to turn off that behavior.
This patch just adds the parameter and lets the block/io.c and
block/block-backend.c functions pass it around. All other callers
always pass false and none of the implementations evaluate it, so that
this patch does not change existing behavior. Future patches take care
of that.
Suggested-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20190918095144.955-5-mreitz@redhat.com
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/iscsi.c')
| -rw-r--r-- | block/iscsi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 2ced15066a..677946cf09 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -2123,7 +2123,8 @@ static void iscsi_reopen_commit(BDRVReopenState *reopen_state) } static int coroutine_fn iscsi_co_truncate(BlockDriverState *bs, int64_t offset, - PreallocMode prealloc, Error **errp) + bool exact, PreallocMode prealloc, + Error **errp) { IscsiLun *iscsilun = bs->opaque; Error *local_err = NULL; |