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fuse: make fuse_direct_io() aware about AIO

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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>
This commit is contained in:
Maxim Patlasov 2012-12-14 19:20:51 +04:00 • committed by Miklos Szeredi
parent 01e9d11a3e
commit 36cf66ed9f
4 changed files with 58 additions and 21 deletions
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2
fs/fuse/dev.c
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@ -111,7 +111,7 @@ static void restore_sigs(sigset_t *oldset)
sigprocmask(SIG_SETMASK, oldset, NULL);
}
static void __fuse_get_request(struct fuse_req *req)
void __fuse_get_request(struct fuse_req *req)
{
atomic_inc(&req->count);
}