From: Dave Anderson <anderson@redhat.com>
Date: Thu, 13 Jan 2011 01:00:36 +0000 (-0800)
Subject: /proc/kcore: fix seeking
X-Git-Tag: v2.6.37.1~155
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d78397190f930da7610359af69b31c42626d50cb;p=pandora-kernel.git

/proc/kcore: fix seeking

commit ceff1a770933e2ca2bf995b453dade4ec47a9878 upstream.

Commit 34aacb2920 ("procfs: Use generic_file_llseek in /proc/kcore") broke
seeking on /proc/kcore.  This changes it back to use default_llseek in
order to restore the original behavior.

The problem with generic_file_llseek is that it only allows seeks up to
inode->i_sb->s_maxbytes, which is 2GB-1 on procfs, where the memory file
offset values in the /proc/kcore PT_LOAD segments may exceed or start
beyond that offset value.

A similar revert was made for /proc/vmcore.

Signed-off-by: Dave Anderson <anderson@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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