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[Qemu-devel] [PATCH v3 5/8] block: remove extra condition in bdrv_can_wr
From: |
Denis V. Lunev |
Subject: |
[Qemu-devel] [PATCH v3 5/8] block: remove extra condition in bdrv_can_write_zeroes_with_unmap |
Date: |
Thu, 14 Jul 2016 16:33:26 +0300 |
All .bdrv_co_write_zeroes callbacks nowadays work perfectly even
with backing store attached. If future new callbacks would be unable to do
that - they have a chance to block this in bdrv_get_info().
Signed-off-by: Denis V. Lunev <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: John Snow <address@hidden>
Reviewed-by: Fam Zheng <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Kevin Wolf <address@hidden>
CC: Max Reitz <address@hidden>
CC: Jeff Cody <address@hidden>
---
block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block.c b/block.c
index 823ff1d..c2fb8bd 100644
--- a/block.c
+++ b/block.c
@@ -2834,7 +2834,7 @@ bool bdrv_can_write_zeroes_with_unmap(BlockDriverState
*bs)
{
BlockDriverInfo bdi;
- if (bs->backing || !(bs->open_flags & BDRV_O_UNMAP)) {
+ if (!(bs->open_flags & BDRV_O_UNMAP)) {
return false;
}
--
2.5.0
- [Qemu-devel] [PATCH v3 0/8] drive-mirror improvements, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 5/8] block: remove extra condition in bdrv_can_write_zeroes_with_unmap,
Denis V. Lunev <=
- [Qemu-devel] [PATCH v3 6/8] mirror: optimize dirty bitmap filling in mirror_run a bit, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 2/8] mirror: make sectors_in_flight int64_t, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 4/8] mirror: create mirror_dirty_init helper for mirror_run, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 7/8] mirror: efficiently zero out target, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 1/8] dirty-bitmap: operate with int64_t amount, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 8/8] mirror: improve performance of mirroring of empty disk, Denis V. Lunev, 2016/07/14
- [Qemu-devel] [PATCH v3 3/8] mirror: create mirror_throttle helper, Denis V. Lunev, 2016/07/14