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[Qemu-devel] [RFC PATCH 3/7] block: do not pass BDRV_O_CACHE_WB to the p
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [RFC PATCH 3/7] block: do not pass BDRV_O_CACHE_WB to the protocol |
Date: |
Fri, 18 May 2012 16:18:28 +0200 |
Formats are entirely in charge of flushes for metadata writes. For
guest-initiated writes, a writethrough cache is faked in the block layer.
Signed-off-by: Paolo Bonzini <address@hidden>
---
block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block.c b/block.c
index 3db7150..b3d0054 100644
--- a/block.c
+++ b/block.c
@@ -661,7 +661,7 @@ static int bdrv_open_common(BlockDriverState *bs, const
char *filename,
if (drv->bdrv_file_open) {
ret = drv->bdrv_file_open(bs, filename, open_flags);
} else {
- ret = bdrv_file_open(&bs->file, filename, open_flags);
+ ret = bdrv_file_open(&bs->file, filename, open_flags &
~BDRV_O_CACHE_WB);
if (ret >= 0) {
ret = drv->bdrv_open(bs, open_flags);
}
--
1.7.10.1
- [Qemu-devel] [RFC PATCH 0/7] Manual writethrough cache and cache mode toggle, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 2/7] savevm: flush after saving vm state, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 1/7] block: flush in writethrough mode after writes, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 3/7] block: do not pass BDRV_O_CACHE_WB to the protocol,
Paolo Bonzini <=
- [Qemu-devel] [RFC PATCH 5/7] block: add bdrv_set_enable_write_cache, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 4/7] block: copy enable_write_cache in bdrv_append, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 6/7] ide: support enable/disable write cache, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 7/7] block: do not handle writethrough in qcow2 caches, Paolo Bonzini, 2012/05/18