From 36cf66ed9f871fc0d0911921fba5873df3ddb2dc Mon Sep 17 00:00:00 2001
From: Maxim Patlasov <mpatlasov@parallels.com>
Date: Fri, 14 Dec 2012 19:20:51 +0400
Subject: [PATCH] fuse: make fuse_direct_io() aware about AIO

The patch implements passing "struct fuse_io_priv *io" down the stack up to
fuse_send_read/write where it is used to submit request asynchronously.
io->async==0 designates synchronous processing.

Non-trivial part of the patch is changes in fuse_direct_io(): resources
like fuse requests and user pages cannot be released immediately in async
case.

Signed-off-by: Maxim Patlasov <mpatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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