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| author | Eric Blake <eblake@redhat.com> | 2016-06-23 16:37:06 -0600 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-07-05 16:46:24 +0200 |
| commit | a604fa2ba55f645abbb082469ed595f58f657ac8 (patch) | |
| tree | 78b51a354097ea4fe70f8af15e84b873ed5e09bb /qemu-option-trace.texi | |
| parent | cff86b38aca34c9cc5c6f8846cc1c5b3d181c376 (diff) | |
block: Document supported flags during bdrv_aligned_preadv()
We don't pass any flags on to drivers to handle. Tighten an
assert to explain why we pass 0 to bdrv_driver_preadv(), and add
some comments on things to be aware of if we want to turn on
per-BDS BDRV_REQ_FUA support during reads in the future. Also,
document that we may want to consider using unmap during
copy-on-read operations where the read is all zeroes.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-option-trace.texi')
0 files changed, 0 insertions, 0 deletions