From b0aa760652179072119582375f8dc896ed5b5dfd Mon Sep 17 00:00:00 2001
From: Maxim Patlasov <MPatlasov@parallels.com>
Date: Thu, 26 Dec 2013 19:51:11 +0400
Subject: [PATCH] fuse: Trust kernel i_mtime only

Let the kernel maintain i_mtime locally:
 - clear S_NOCMTIME
 - implement i_op->update_time()
 - flush mtime on fsync and last close
 - update i_mtime explicitly on truncate and fallocate

Fuse inode flag FUSE_I_MTIME_DIRTY serves as indication that local i_mtime
should be flushed to the server eventually.

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