From 29cb4c01e7b38589fa4fe3f9ea82f69dc2df3051 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 25 Oct 2018 14:18:58 +0100 Subject: [PATCH] file-posix: Avoid aio_worker() for QEMU_AIO_TRUNCATE aio_worker() doesn't add anything interesting, it's only a useless indirection. Call the handler function directly instead. As we know that this handler function is only called from coroutine context and the coroutine stays around until the worker thread finishes, we can keep RawPosixAIOData on the stack. Signed-off-by: Kevin Wolf --- block/file-posix.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index 27be94cfe5..7c5121efc9 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1645,8 +1645,9 @@ static ssize_t handle_aiocb_discard(RawPosixAIOData *aiocb) return ret; } -static int handle_aiocb_truncate(RawPosixAIOData *aiocb) +static int handle_aiocb_truncate(void *opaque) { + RawPosixAIOData *aiocb = opaque; int result = 0; int64_t current_length = 0; char *buf = NULL; @@ -1812,8 +1813,7 @@ static int aio_worker(void *arg) ret = handle_aiocb_copy_range(aiocb); break; case QEMU_AIO_TRUNCATE: - ret = handle_aiocb_truncate(aiocb); - break; + g_assert_not_reached(); default: error_report("invalid aio request (0x%x)", aiocb->aio_type); ret = -EINVAL; @@ -1981,9 +1981,9 @@ static int coroutine_fn raw_regular_truncate(BlockDriverState *bs, int fd, int64_t offset, PreallocMode prealloc, Error **errp) { - RawPosixAIOData *acb = g_new(RawPosixAIOData, 1); + RawPosixAIOData acb; - *acb = (RawPosixAIOData) { + acb = (RawPosixAIOData) { .bs = bs, .aio_fildes = fd, .aio_type = QEMU_AIO_TRUNCATE, @@ -1994,7 +1994,7 @@ raw_regular_truncate(BlockDriverState *bs, int fd, int64_t offset, }, }; - return raw_thread_pool_submit(bs, aio_worker, acb); + return raw_thread_pool_submit(bs, handle_aiocb_truncate, &acb); } static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset,