From: Maxim Patlasov <MPatlasov@parallels.com>
Date: Thu, 26 Dec 2013 15:51:11 +0000 (+0400)
Subject: fuse: Trust kernel i_mtime only
X-Git-Tag: v3.15-rc1~94^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0aa760652179072119582375f8dc896ed5b5dfd;p=pandora-kernel.git

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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