From: Oleg Nesterov <oleg@redhat.com>
Date: Thu, 9 Oct 2014 22:25:36 +0000 (-0700)
Subject: fs/proc/task_mmu.c: simplify m_start() to make it readable
X-Git-Tag: fixes-against-v3.18-rc2~137^2~132
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0c255321f879c36bd74f58f9c7ed235ea6b919cb;p=pandora-kernel.git

fs/proc/task_mmu.c: simplify m_start() to make it readable

Now that m->version is gone we can cleanup m_start(). In particular,

  - Remove the "unsigned long" typecast, m->index can't be negative
    or exceed ->map_count. But lets use "unsigned int pos" to make
    it clear that "pos < map_count" is safe.

  - Remove the unnecessary "vma != NULL" check in the main loop. It
    can't be NULL unless we have a vm bug.

  - This also means that "pos < map_count" case can simply return the
    valid vma and avoid "goto" and subsequent checks.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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