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author | Fam Zheng | 2014-09-11 07:41:08 +0200 |
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committer | Stefan Hajnoczi | 2014-09-22 12:38:57 +0200 |
commit | f197fe2b2c77259b6570620f288d905bfa38e2da (patch) | |
tree | e9dcfaa75bbd9bc93ae309bbd2129207dc1e36b6 /block.c | |
parent | ide/ahci: Check for -ECANCELED in aio callbacks (diff) | |
download | qemu-f197fe2b2c77259b6570620f288d905bfa38e2da.tar.gz qemu-f197fe2b2c77259b6570620f288d905bfa38e2da.tar.xz qemu-f197fe2b2c77259b6570620f288d905bfa38e2da.zip |
block: Add refcnt in BlockDriverAIOCB
This will be useful in synchronous cancel emulation with
bdrv_aio_cancel_async.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r-- | block.c | 12 |
1 files changed, 11 insertions, 1 deletions
@@ -4891,13 +4891,23 @@ void *qemu_aio_get(const AIOCBInfo *aiocb_info, BlockDriverState *bs, acb->bs = bs; acb->cb = cb; acb->opaque = opaque; + acb->refcnt = 1; return acb; } +void qemu_aio_ref(void *p) +{ + BlockDriverAIOCB *acb = p; + acb->refcnt++; +} + void qemu_aio_release(void *p) { BlockDriverAIOCB *acb = p; - g_slice_free1(acb->aiocb_info->aiocb_size, acb); + assert(acb->refcnt > 0); + if (--acb->refcnt == 0) { + g_slice_free1(acb->aiocb_info->aiocb_size, acb); + } } /**************************************************************/ |