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(parent: 33da889) | patch
seq_file: fix big-enough lseek() + read()
authorAlexey Dobriyan <adobriyan@gmail.com>
Thu, 5 Feb 2009 21:30:05 +0000 (00:30 +0300)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 5 Feb 2009 22:18:14 +0000 (14:18 -0800)
commitf01d1d546abb2f4028b5299092f529eefb01253a
tree625a9f9923ae53cc9bf75cf46fcebbbeb8ac84a8tree | snapshot (tar.gz zip)
parent33da8892a2f9e7d4b2d9a35fc80833ba2d2b1aa6commit | diff
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>
fs/seq_file.c diff | blob | blame | history