tree 3d7051fa831052a21943f40f2c7833f78cd197ab
parent 4b7414834ebe176312c97641b1faf26127ad528a
author Jiang Liu <liuj97@gmail.com> 1370534851 +0800
committer Olav Haugan <ohaugan@codeaurora.org> 1383153740 -0700

zram: use atomic64_xxx() to replace zram_stat64_xxx()

Use atomic64_xxx() to replace open-coded zram_stat64_xxx().
Some architectures have native support of atomic64 operations,
so we can get rid of the spin_lock() in zram_stat64_xxx().
On the other hand, for platforms use generic version of atomic64
implement, it may cause an extra save/restore of the interrupt
flag.  So it's a tradeoff.

Change-Id: Ic1e5f79328b998ec2d0b571851199dfd2d5560a6
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: da5cc7d338f97886ebf35be92995460289379b73
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>