From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Thu, 5 Feb 2009 21:30:05 +0000 (+0300)
Subject: seq_file: fix big-enough lseek() + read()
X-Git-Tag: v2.6.29-rc4~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f01d1d546abb2f4028b5299092f529eefb01253a;p=pandora-kernel.git

seq_file: fix big-enough lseek() + read()

lseek() further than length of the file will leave stale ->index
(second-to-last during iteration). Next seq_read() will not notice
that ->f_pos is big enough to return 0, but will print last item
as if ->f_pos is pointing to it.

Introduced in commit cb510b8172602a66467f3551b4be1911f5a7c8c2
aka "seq_file: more atomicity in traverse()".

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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