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[Qemu-devel] [PATCH 06/20] xen_disk: Call blk_set_enable_write_cache() e
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH 06/20] xen_disk: Call blk_set_enable_write_cache() explicitly |
Date: |
Fri, 18 Mar 2016 19:21:15 +0100 |
Signed-off-by: Kevin Wolf <address@hidden>
---
hw/block/xen_disk.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c
index 635328f..c358709 100644
--- a/hw/block/xen_disk.c
+++ b/hw/block/xen_disk.c
@@ -888,12 +888,14 @@ static int blk_connect(struct XenDevice *xendev)
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
int pers, index, qflags;
bool readonly = true;
+ bool writethrough = true;
/* read-only ? */
if (blkdev->directiosafe) {
qflags = BDRV_O_NOCACHE | BDRV_O_NATIVE_AIO;
} else {
- qflags = BDRV_O_CACHE_WB;
+ qflags = 0;
+ writethrough = false;
}
if (strcmp(blkdev->mode, "w") == 0) {
qflags |= BDRV_O_RDWR;
@@ -925,6 +927,7 @@ static int blk_connect(struct XenDevice *xendev)
error_free(local_err);
return -1;
}
+ blk_set_enable_write_cache(blkdev->blk, !writethrough);
} else {
/* setup via qemu cmdline -> already setup for us */
xen_be_printf(&blkdev->xendev, 2, "get configured bdrv (cmdline
setup)\n");
--
1.8.3.1
- [Qemu-devel] [PATCH 00/20] block: Implement writethrough in BlockBackend, Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 02/20] qemu-nbd: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 01/20] block: Add bdrv_parse_cache_mode(), Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 04/20] qemu-img: Expand all BDRV_O_FLAGS uses, Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 03/20] qemu-io: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 06/20] xen_disk: Call blk_set_enable_write_cache() explicitly,
Kevin Wolf <=
- [Qemu-devel] [PATCH 09/20] block: Handle flush error in bdrv_pwrite_sync(), Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 05/20] qemu-img: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 07/20] block: blockdev_init(): Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/18
- [Qemu-devel] [PATCH 08/20] block: Always set writeback mode in blk_new_open(), Kevin Wolf, 2016/03/18