[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 11/12] block/get_block_status: avoid redundant callo
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCH 11/12] block/get_block_status: avoid redundant callouts on raw devices |
Date: |
Fri, 13 Sep 2013 12:25:08 +0200 |
if a raw device like an iscsi target or host device is used
the current implementation makes a second call out to get
the block status of bs->file. however, the raw driver already
has called bdrv_get_block_status on bs->file.
Signed-off-by: Peter Lieven <address@hidden>
---
block.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/block.c b/block.c
index cf9db62..282943b 100644
--- a/block.c
+++ b/block.c
@@ -3167,7 +3167,8 @@ static int64_t coroutine_fn
bdrv_co_get_block_status(BlockDriverState *bs,
if (bs->file &&
(ret & BDRV_BLOCK_DATA) && !(ret & BDRV_BLOCK_ZERO) &&
- (ret & BDRV_BLOCK_OFFSET_VALID)) {
+ (ret & BDRV_BLOCK_OFFSET_VALID) &&
+ strcmp(bs->drv->format_name, "raw")) {
ret2 = bdrv_co_get_block_status(bs->file, ret >> BDRV_SECTOR_BITS,
*pnum, pnum);
if (ret2 >= 0) {
--
1.7.9.5
- Re: [Qemu-devel] [PATCH 07/12] block: introduce bdrv_zeroize, (continued)
[Qemu-devel] [PATCH 06/12] iscsi: add .bdrv_get_info, Peter Lieven, 2013/09/13
[Qemu-devel] [PATCH 11/12] block/get_block_status: avoid redundant callouts on raw devices,
Peter Lieven <=
[Qemu-devel] [PATCH 09/12] block/get_block_status: set *pnum = 0 on error, Peter Lieven, 2013/09/13
[Qemu-devel] [PATCH 10/12] block/get_block_status: avoid segfault if there is no backing_hd, Peter Lieven, 2013/09/13
[Qemu-devel] [PATCH 12/12] block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks, Peter Lieven, 2013/09/13