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[Qemu-devel] [PATCH 05/11] vvfat: make it thread-safe
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 05/11] vvfat: make it thread-safe |
Date: |
Wed, 31 May 2017 11:43:24 +0200 |
Signed-off-by: Paolo Bonzini <address@hidden>
---
block/vvfat.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/block/vvfat.c b/block/vvfat.c
index 9c82371360..457b73a35c 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2983,8 +2983,14 @@ static int coroutine_fn
write_target_commit(BlockDriverState *bs, uint64_t offset, uint64_t bytes,
QEMUIOVector *qiov, int flags)
{
+ int ret;
+
BDRVVVFATState* s = *((BDRVVVFATState**) bs->opaque);
- return try_commit(s);
+ qemu_co_mutex_lock(&s->lock);
+ ret = try_commit(s);
+ qemu_co_mutex_unlock(&s->lock);
+
+ return ret;
}
static void write_target_close(BlockDriverState *bs) {
--
2.13.0
- [Qemu-devel] [RFC PATCH 00/11] Block layer thread-safety, part 2, Paolo Bonzini, 2017/05/31
- [Qemu-devel] [PATCH 05/11] vvfat: make it thread-safe,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 01/11] qcow2: call CoQueue APIs under CoMutex, Paolo Bonzini, 2017/05/31
- [Qemu-devel] [PATCH 02/11] coroutine-lock: add qemu_co_rwlock_downgrade and qemu_co_rwlock_upgrade, Paolo Bonzini, 2017/05/31
- [Qemu-devel] [PATCH 03/11] vdi: make it thread-safe, Paolo Bonzini, 2017/05/31
- [Qemu-devel] [PATCH 04/11] vpc: make it thread-safe, Paolo Bonzini, 2017/05/31
- [Qemu-devel] [PATCH 06/11] nbd: make it thread-safe, Paolo Bonzini, 2017/05/31