From: Hugh Dickins <hugh@veritas.com>
Date: Sun, 8 Feb 2009 20:56:58 +0000 (+0000)
Subject: mm: fix error case in mlock downgrade reversion
X-Git-Tag: v2.6.29-rc5~54
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d5b562330ec766292a3ac54ae5e0673610bd5b3d;p=pandora-kernel.git

mm: fix error case in mlock downgrade reversion

Commit 27421e211a39784694b597dbf35848b88363c248, Manually revert
"mlock: downgrade mmap sem while populating mlocked regions", has
introduced its own regression: __mlock_vma_pages_range() may report
an error (for example, -EFAULT from trying to lock down pages from
beyond EOF), but mlock_vma_pages_range() must hide that from its
callers as before.

Reported-by: Sami Farin <safari-kernel@safari.iki.fi>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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