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aio-posix: simplify FDMonOps->update() prototype

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The AioHandler *node, bool is_new arguments are more complicated to
think about than simply being given AioHandler *old_node, AioHandler
*new_node.

Furthermore, the new Linux io_uring file descriptor monitoring mechanism
added by the new patch requires access to both the old and the new
nodes.  Make this change now in preparation.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Link: https://lore.kernel.org/r/20200305170806.1313245-5-stefanha@redhat.com
Message-Id: <20200305170806.1313245-5-stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2020-03-05 17:08:03 +00:00
parent 1f050a4690
commit b321051cf4
4 changed files with 22 additions and 23 deletions
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7
util/aio-posix.c
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@ -139,12 +139,7 @@ void aio_set_fd_handler(AioContext *ctx,
atomic_set(&ctx->poll_disable_cnt,
atomic_read(&ctx->poll_disable_cnt) + poll_disable_change);
if (new_node) {
ctx->fdmon_ops->update(ctx, new_node, is_new);
} else if (node) {
/* Unregister deleted fd_handler */
ctx->fdmon_ops->update(ctx, node, false);
}
ctx->fdmon_ops->update(ctx, node, new_node);
qemu_lockcnt_unlock(&ctx->list_lock);
aio_notify(ctx);