tree 625a9f9923ae53cc9bf75cf46fcebbbeb8ac84a8
parent 33da8892a2f9e7d4b2d9a35fc80833ba2d2b1aa6
author Alexey Dobriyan <adobriyan@gmail.com> 1233869405 +0300
committer Linus Torvalds <torvalds@linux-foundation.org> 1233872294 -0800

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>