From: Will Deacon <will.deacon@arm.com>
Date: Mon, 7 Jan 2013 16:12:31 +0000 (+0000)
Subject: arm64: vdso: remove broken, redundant sequence counting for timezones
X-Git-Tag: v3.8-rc4~13^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bdba0051ebcb3c6372f9cc0b2524c47cc6ce46fd;p=pandora-kernel.git

arm64: vdso: remove broken, redundant sequence counting for timezones

This patch is an arm64 version of ce73ec6db47a ("powerpc/vdso: Remove
redundant locking in update_vsyscall_tz()").

Timezone data is not protected, so the sequence counter is not required
to ensure consistency. Furthermore, having multiple paths updating the
counter leads to a race between update_vsyscall and update_vsyscall_tz,
so remove the timezone sequence counting from both the kernel and the
vdso.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

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