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| 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/qed.c | |
| parent | 26536c7fc25917d1bd13781f81fe3ab039643bff (diff) | |
| download | qemu-c80d8b06cfa59f5d8229379c85dcb2c3bb9c881b.zip | |
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/qed.c')
| -rw-r--r-- | block/qed.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/qed.c b/block/qed.c index 0d8fd507aa..7c2a65af40 100644 --- a/block/qed.c +++ b/block/qed.c @@ -674,7 +674,7 @@ static int coroutine_fn bdrv_qed_co_create(BlockdevCreateOptions *opts, l1_size = header.cluster_size * header.table_size; /* File must start empty and grow, check truncate is supported */ - ret = blk_truncate(blk, 0, PREALLOC_MODE_OFF, errp); + ret = blk_truncate(blk, 0, false, PREALLOC_MODE_OFF, errp); if (ret < 0) { goto out; } @@ -1461,6 +1461,7 @@ static int coroutine_fn bdrv_qed_co_pwrite_zeroes(BlockDriverState *bs, static int coroutine_fn bdrv_qed_co_truncate(BlockDriverState *bs, int64_t offset, + bool exact, PreallocMode prealloc, Error **errp) { |